IC9445A200AA IC9445Y105 - Platt Electric SupplyGENERAL IC9446 limit switches feature positive...

SPECIFICATIONSGeneral-purpose Enclosure

Meets NEMA standards for Type 1 gener-al-purpose enclosure and Type 3 weather-resistant (waterproof). The general-purposeenclosure is intended for industrial applica-tions indoors as well as for general use out-doors.Watertight Enclosure

Meets NEMA standards for Type 4 water-tight enclosure as well as Type 12 dust-tight.The watertight enclosure is suitable for usein wet locations as well as in dusty areas ofsteel and cement mills.Bronze Enclosure

Use bronze enclosure on ship docks andother shoreside areas for extra corrosionresistance. Order bronze levers.Nonoverlapping Circuits

With nonoverlapping circuits, one circuitis opened before another is closed. (SeeFig. 12.)Overlapping Circuits

With overlapping circuits, one circuit isopened after another is closed. (See Fig. 12.)Maintained-contact Switches

Switch remains in one position until it ismoved to opposite position by the operatingdog. Forked levers required.Spring-return

Switch returns to midposition after trip-ping dog has pressed over lever.

When used with spring-return, only oneof the four circuits (maximum) can be anormally open snap-action contact.Contacts Actuated Both Directions

Circuit or circuits will have a change instate when switch is activated in either direc-tion.Standard Universal Contact Blocks

This contact block is the basic construc-tion unit for IC limit switches as well asIC3012 master switches. (See Page 2-2 fordetails.)Snap-action Contact Blocks

Snap-action contact blocks provide quick-make quick-break contacts for slow-movingapplications of 180-fpm maximum. Withquick-make quick-break contacts, burningof contact tips resulting from slow move-ment is eliminated.Contacts Actuated in One Direction

Circuit or circuits will have a change instate when switch is activated in one direc-tion, but not when activated in the otherdirection from midpoint.Normally Open vs Normally Closed Circuits

Contacts can be set in the field for eithernormally open or normally closed arrange-ment.Mixture of Contact Actuations

Contacts arranged so that some are actu-

ated in both directions and others are actu-ated in one direction.Slack-cable Applications

A single-pole limit switch used in the con-trol circuit to shut down the drive when abreak or slack cable condition results on acrane, hoist, or any application where a ca-ble is wound on a drum (switch can be setfor automatic or manual reset). An operat-ing mechanism, provided by hoist builder,operates the switch lever. Order switch andlever together as follows:

Crane-hook Applications

A two-pole limit switch used in the controlcircuit for limiting upward travel of cranehook. Switch contact is held closed by coun-terweight suspended along hoist cable. Con-tacts open when counterweight is lifted byupward travel of crane hook block. Orderswitch and actuating equipment together asfollows:

Enclosure IC9445 Form

General-purpose C200*General-purpose C207†General-purpose C208‡Watertight D200*Watertight D203†Watertight D204‡

* Limit switch with lever, weight and cable.† Limit switch less lever, weight and cable.‡ Limit switch with lever, less weight and cable.

Fig. 11. IC9445 limit switch for crane hook applications

SWITCH WITH NONOVERLAPPING CIRCUITS

Numberof

CircuitsEnclosure

IC9445 FormAdjustable for maintained-contact or spring-return opera-

tion with contacts actuated in one direction or both directionsStandardUniversalContactBlocks

Snap-actionContact Blocks

1General-purpose A200AA A204ANWatertight B200AA B206ANWatertight bronze H200AA . . .

2General-purpose A200AB A204AMWatertight B200AB B206AMWatertight bronze H200AB . . .

3General-purpose A400AA A402AVWatertight B400AA B404AVWatertight bronze H400AA . . .

4General-purpose A400AB A402AWWatertight B400AB B404AWWatertight bronze H400AB . . .

SWITCH WITH OVERLAPPING CIRCUITS

Numberof

CircuitsEnclosure

IC9445 Form

Maintained-contact

Spring-returnContactsActuatedin Both

Directions

Mixtureof

ContactActuations

2General-purpose A200AC A200AD

Order by descriptionWatertight B200AC B200ADWatertight bronze H200AC H200AD

4General-Purpose A400AD A400AF Order by descriptionWatertight B400AD B400AF

Enclosure IC9445 Form

General-purpose E200Watertight F200

Heavy-duty Limit Switches2-2

Lever-operated—IC9445

Data subject to change without notice

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HOW TO ORDER

Order by complete catalog number ofboth switch and lever. Catalog number iscomprised of type-form. (Example:IC9445A200AA limit switch and seperateitem IC9445Y105 lever.)

REFERENCES:

Instructions....................................GEH-3062Renewal Parts .................................GEF-4183Weights .............................................Page 2-6

Fig. 12. Examples of contact operation

IC9445 LEVERS

Illustration LeverType

RollerMaterial

Industrial Typefor Indoorsor Outdoors

Bronze forIC9445H200

or H400Switches

IC9445Form

IC9445Form

Straight

MoldedPhenolic Y100 Y118

Hardenedsteel Y103 Y121

Compositionrubber Y105 Y122-Obsolete

Straight Hardenedsteel Y101 Y119

Offset

MoldedPhenolic Y113 . . .

Hardenedsteel Y117 . . .

Forkedroller

*


Bronze Y133 . . .

Straight

MoldedPhenolic Y112 Y124


Compositionrubber Y116 Y127-Obsolete

* Forked levers are for use with maintained switches only.

Illustration LeverType

RollerMaterial

Industrial Typefor Indoorsor Outdoors

Bronze forIC9445H200

or H400Switches

IC9445Form

IC9445Form

Straight Hardenedsteel Y115 Y 126-Obsolete

Straight

MoldedPhenolic Y111 . . .

Hardenedsteel Y138 . . .

Fork* . . . Y110 Y123

Straight . . . Y108 Y140

Cranehoisthook

. . .

Lever, weight and cable(Refer to crane-hookapplication and Fig. 11,page 2-4)IC9445Y106 (6-ft. cable)IC9445Y134 (12-ft. cable)

Slackcable . . . Lever IC9445Y107 included as part

of slack-cable limit switch, page 2-4.

Heavy-duty Limit Switches 2-3



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DATALever travel ............................ Max travel: 40 degrees each direction

from midpoint. Travel to operate contacts:approximately 15 degrees maximum frommidpoint.

Torque requirementsTwo-circuit ............................... 26 in.-lb for maintained-contact

22 in.-lb for spring-returnFour-circuit ............................... 36 in.-lb for maintained contact

30 in.-lb for spring-returnMaintained-contact

positions .............................30 degrees each side of midpoint. Shaft extension...................... Interchangeable side to side

Contact ratings Standard Snap-actionAdjustment on shaft ............. Lever position adjustable over 360 degrees. Make

Ac or dc................................ 75-amp 75-ampMethod of adjustment .......... Screw vernier with lock nut. Carry

Ac or dc................................ 15-amp 15-ampAllowable tripping- Standard ratings:

dog speed ........................... 300 feet-per-minute for maintained-contact Interrupt400 feet-per-minute for spring-return 115-volt ac............................ 75-amp 75-amp180 feet-per-minute for snap-action contact 230-volt ac............................ 50-amp 50-amp

460-volt ac............................ 18-amp 18-amp575-volt ac............................ 14-amp 14-amp115-volt dc inductive............ 2.5-amp 1.8-amp

Make-break differential ......... Five degrees for snap-action opening and 230-volt dc inductive............ 0.8-amp 0.6-ampclosing on same cam slope (reversing ser- 550-volt dc inductive............ 0.24-amp 0.24-ampvice). Mounting ................................ Mount either on base or side wall.

IC9445Form

Dimensions in Inches ApproxWeightin LbA B C D E

A200 4 17⁄32 3 1⁄2 3 17⁄32 2 9⁄32 3⁄4 7 1⁄2A400 6 5⁄8 4 19⁄32 4 17⁄32 3 9⁄32 1 11H200 4 17⁄32 3 1⁄2 3 17⁄32 2 9⁄32 3⁄4 14

Fig. 13. IC9445-A200, -A400, and -H200

IC9445Form

Dimensions in Inches ApproxWeightin LbA B C D E

B200 4 17⁄32 4 3 31⁄32 2 9⁄32 3⁄4 9B400 6 5⁄8 5 1⁄32 4 31⁄32 3 9⁄32 1 13

Fig. 14. IC9445-B200 and -B400

Fig. 15. IC9445-Y102, -Y120, -Y133 Fig. 16. IC9445-Y110, -Y123 Fig. 17. IC9445-Y108, -Y140

DIMENSIONS




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IC9445Form

Ain In.

IC9445Form

Ain In.

Y100 4 Y112 6Y103 4 Y114 6Y105 4 Y116 6Y118 4 Y124 6Y121 4 Y125 6Y122 4 Y127 6

Fig. 18. Straight lever

IC9445Form

Ain In.

Y101 4Y119 4Y115 6Y126 6

Fig. 19. Straight lever

Fig. 20. IC9445-Y113, -Y117 offset lever

Fig. 21. IC9445-Y111, -Y138 straight lever

Fig. 22. Crane-hook limit switch IC9445-C200 and -D200 Fig. 23. Slack-cable limit switch IC9445-E200 and -F200

DIMENSIONS (CONT’D)



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GENERAL

IC9446 limit switches feature positive cir-cuit opening and independent vernier ad-justment of each circuit. Switches rated 60-rpm utilize snap-action contacts. Switchesrated 60- and 150-rpm shaft speed have ad-justable-length cams. Switches rated600-rpm shaft speed have 180-degree camlobes sloped for high-speed operation.

SNAP ACTION CONTACT BLOCK

For IC9445 limit switch with snap actioncontact blocks or IC9446 limit switch for60-rpm shaft speed, order Catalogue num-ber IC2956A206A.

REFERENCES:

Instructions....................................GEH-3066Renewal Parts .................................GEF-4199

Fig. 29. IC9446 with internal vernier adjustment Fig. 30. IC9446 geared, with watertight enclosure

60-RPM MAXIMUM AND 150-RPM MAXIMUM

EnclosureVernier

CamAdjustment

Numberof

Circuits

60-rpm Max Shaft Speed 150-rpm Max Shaft Speed

GearedLimit

Switches

Single Shaft Extension Double ShaftExtension Single Shaft Extension Double Shaft

ExtensionLeft SideIC9446Form

Right SideIC9446Form

IC9446Form

Left SideIC9446Form


IC9446Form

NEMA 1General-purpose

*Internal(Fig. 29)

1 B120AA B121AA B122AA B100AA B102AA B104AA

Seepage2-11for

ratiosof

speedreducers

2 B120BA B121BA B122BA B100BA B102BA B104BA

3 B120CA B121CA B122CA B100CA B102CA B104CA

4 B220DA B221DA B222DA B200DA B202DA B204DA

5 B220EA B221EA B222EA B200EA B202EA B204EA

6 B220FA B221FA B222FA B200FA B202FA B204FA

7 B320GA B321GA B322GA B300GA B302GA B304GA

8 B320HA B321HA B322HA B300HA B302HA B304HA

9 B320JA B321JA B322JA B300JA B302JA B304JA

10 B420KA B421KA B422KA B400KA B402KA B404KA

11 B420LA B421LA B422LA B400LA B402LA B404LA

12 B420MA B421MA B422MA B400MA B402MA B404MA

NEMA 3,4 or 12

Outdoor,Watertight,Dust-tight

or JICService

Internal(Switch

only, Fig.30)

1 C220AA C221AA C222AA C200AA C202AA C204AA

Seepage2-11for

ratiosof

speedreducers

2 C220BA C221BA C222BA C200BA C202BA C204BA

3 C220CA C221CA C222CA C200CA C202CA C204CA

4 C220DA C221DA C222DA C200DA C202DA C204DA

5 C220EA C221EA C222EA C200EA C202EA C204EA

6 C220FA C221FA C222FA C200FA C202FA C204FA

7 C420GA C421GA C422GA C400GA C402GA C404GA

8 C420HA C421HA C422HA C400HA C402HA C404HA

9 C420JA C421JA C422JA C400JA C402JA C404JA

10 C420KA C421KA C422KA C400KA C402KA C404KA

11 C420LA C421LA C422LA C400LA C402LA C404LA

12 C420MA C421MA C422MA C400MA C402MA C404MA

*All IC9446A (external vernier cam adjustment) are replaced by IC9446B (internal vernier cam adjustment) form for form.


Rotating–IC9446 60-, 150-, and 600-rpm Max Cam Speed


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HOW TO ORDER

Specify quantity desired. Order by com-plete IC9446 catalog number. EXAMPLE:One IC9446 rotating limit switch, rated 150-rpm maximum shaft speed, with NEMA 1enclosure, internal vernier cam adjust-ments, six circuits, single shaft extension onleft side, and with 4:1 gear ratio may beordered as 1—IC9446B200FA101.

600-RPM MAXIMUM

EnclosureVernier

CamAdjustment

Numberof

Circuits

600-rpm Max Shaft Speed

Single Shaft Extension Double ShaftExtension

Left SideIC9446Form


IC9446Form

NEMA 1General-purpose

*Internal

1 B101AA B103AA B105AA

2 B101BA B103BA B105BA

3 B101CA B103CA B105CA

4 B201DA B203DA B205DA

5 B201EA B203EA B205EA

6 B201FA B203FA B205FA

7 B301GA B303GA B305GA

8 B301HA B303HA B305HA

9 B301JA B303JA B305JA

10 B401KA B403KA B405KA

11 B401LA B403LA B405LA

12 B401MA B403MA B405MA

NEMA 3,4 or 12

Outdoor,Watertight,Dust-tight

or JICService

Internal

1 C201AA C203AA C205AA

2 C201BA C203BA C205BA

3 C201CA C203CA C205CA

4 C201DA C203DA C205DA

5 C201EA C203EA C205EA

6 C201FA C203FA C205FA

7 C401GA C403GA C405GA

8 C401HA C403HA C405HA

9 C401JA C403JA C405JA

10 C401KA C403KA C405KA

11 C401LA C403LA C405LA

12 C401MA C403MA C405MA

* All IC9446A (external vernier cam adjustment) are replaced by IC9446B (internal vernier cam adjustment) form for form.

DIMENSIONS (Dimension for IC9446C on page 2-13)

Fig. 31. IC9446B limit switch without gearing Fig. 32. IC9446B limit switch with gearing

Numberof

Circuits

Dimensions in Inches Approx Weight in LbFig. 31 Fig. 32 Without

GearingWith

GearingA B C D* A B C* D1-3 11 7⁄16 4 21⁄32 7 23⁄64 1 1⁄4 16 1⁄16 17 7⁄16 1 1⁄4 7 23⁄64 20 354-6 15 7⁄32 8 7⁄16 11 9⁄64 1 1⁄4 19 27⁄32 21 7⁄32 1 1⁄4 11 9⁄64 25 407-9 19 12 7⁄32 14 59⁄64 1 1⁄4 23 5⁄8 25 1 1⁄4 14 59⁄64 30 45

10-12 22 25⁄32 16 18 45⁄64 1 1⁄2 27 13⁄32 28 25⁄32 1 1⁄2 18 45⁄64 35 50

* Hole for Conduit (conduit size in inches).

Speed Reducers

GearRatios

Limit-switchSuffix No.

LeftSide

RightSide

4 : 1 101 701

8 : 1 102 702

10 : 1 103 703

16 : 1 104 704

20 : 1 105 705

25 : 1 106 706

40 : 1 108 708

50 : 1 109 709

100 : 1 114 714

200 : 1 116 716

400 : 1 118 718

800 : 1 120 720

1600 : 1 121 721

NOTE: No other speed reducers available.


Rotating—IC9446 60-, 150, and 600-rpm Max Cam Speed


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Note 1

Cams on limit switches rated 60- and 150-rpm and below can beset to hold contacts open for any number of degrees between theminimum and maximum shown.

Cams on limit switches rated 600-rpm are fixed 180-degree cams. Whereit is desired to adjust duration of contact opening and closing, connect twocircuits in series for opening greater than 180 degrees and in parallel foropening less than 180 degrees (See below).

The vernier adjustment provides fine adjustment of the point ofcontact opening or closing. If independent vernier adjustment ofboth opening and closing is desired, connect two sets of contacts inparallel or series as shown below. One vernier can then be used toadjust the opening and the other the closing of the circuit.

Note 2

Dc inductive rating of IC9446 limit switches with standard con-tact blocks varies with speed as shown below. Rating of 60-rpmswitches with snap-action contact blocks is independent of speed.See tables top of next column.

Minimum Operating

Speed—Rpm Interrupting Rating

150-rpm

Switches

600-rpm

Switches

Dc Inductive Amp

125-volt 250-volt

20 80 1.8 0.75 20 1.3 0.51 4 0.7 0.3

Note 3

For application to coil circuits of dc relays and contactors, inter-rupting requirements can be estimated as follows:

DeviceApprox Coil Current-amp

125-volt Dc 250-volt Dc

Heavy-duty industrial relay 0.16 0.08Single-pole contactor

Size 1 0.11 0.06Size 2 0.13 0.07Size 3 0.28 0.12Size 4 0.28 0.12Size 5 0.42 0.19Size 6 0.53 0.29Size 7 0.53 0.29

For two or more devices in parallel, estimate total current byadding values above.

When the dc inductive current to be interrupted exceeds limit-switch rating, use an intermediate relay or RC suppressor circuit.RC suppressor circuits can reduce the arcing time to zero.

Note 4

Make-break differential of IC9446 limit switches with standardcontact blocks on dc inductive circuits varies with speed as shownbelow. Contact differential of 60-rpm switches with snap-actioncontact blocks is 7.5 degrees.

Rpm Dc Inductive AmpMake-break

Differential150-rpm

Switches

600-rpm

Switches125-volt 250-volt

20 80 1.8 0.7 9 deg1.3 0.5 5.5 deg0.7 0.3 2.5 deg

5 20 1.3 0.5 1.8 deg0.7 0.3 0.6 deg

1 4 0.7 0.3 0.1 deg

DATASwitch

CharacteristicsIC9446 Switches

60-rpm 150-rpm 600-rpmDirection of rotation....................... CW or CW or CW or

CCW CCW CCWCam adjustment on shaft (deg) .... 360 360 360Vernier adjustment (deg)............... 20 20 20Duration of open circuit(See Note 1)

Min (deg) ....................................... 30 25 180Max (deg) ...................................... 345 350 180

Contact ratings (amp)Make ............................................. 75 75 75Carry .............................................. 15 15 15Interrupt, ac

115 volts .................................... 75 75 75230 volts .................................... 50 50 50460 volts .................................... 18 18 18

Interrupt, dc inductive(See Notes 2 and 3)

125 volts .................................... 1.8 1.8 1.8250 volts .................................... 0.6 0.7 0.7550 volts .................................... 0.24 0.24 0.24

SwitchCharacteristics

IC9446 Switches60-rpm 150-rpm 600-rpm

Reversing operationUsable cam shaft rotation

(deg) ........................................... 340 335 . . .Usable gear-shaft turns, if

geared........................................ 0.945 0.930 . . .times ratio times ratio

Make-break differential (deg)Ac .................................................. 7 1⁄2 0 0Dc inductive................................... 7 1⁄2 See Note 4 See Note 4

Torque requirements (In.lb) ..........To open one contact ..................... 12 10 10To close one contact..................... 0 0 0To overcome friction ..................... 3 3 3To operate two or more

contacts ..................................... Add re- Add re- Add re-quirements quirements quirements

Shaft extensionInterchangeable side-to-side

in field ........................................ Yes Yes YesMounting position .......................... Any Any Any


Rotating—IC9446 60-, 150-, and 600-rpm Max Cam Speed


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Numberof

Circuits

Dimensions in Inches ApproxWeightin LbA B C D E F

1-6 15 11⁄16 14 11⁄16 7 11⁄32 7 19⁄64 14 19⁄32 11⁄4-inch 75pipe tap

7-12 23 1⁄4 22 1⁄4 11 1⁄8 11 5⁄64 22 5⁄32 11⁄2-inch 85pipe tap

Fig. 33. IC9446C Limit switch without gearing

DIMENSIONS (Dimension for IC9446B on page 2-11)

Fig. 34. IC9446C limit switch with gearing

Numberof

Cir-cuits

Dimensions in Inches Ap-prox

Weightin LbA B C

1-6 14 19⁄32 22 21⁄32 24 957-12 22 5⁄32 30 7⁄32 31 9⁄16 105


Rotating—IC9446 60-, 150-, and 600-rpm Max Cam Speed


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WHERE TO USE

The mill-duty, surface-mounted masterswitch is used in steel mills, cranes and shov-els.

The surface switch is constructed with acast-iron base, cast-aluminum cover, individ-ual contact blocks and phenolic-compoundcams, designed for heavy-duty applications600 volts maximum. The switch is designedfor mounting on a desk surface or pedestal.Maintained contact or spring return modelsare available in 6 and 12 circuit sizes.

HOW TO ORDER

Order by complete IC number. EXAM-PLE: IC3012E201F8. Suffix ‘‘8’’ denotescontact sequence (see Fig. 46) and is notprice sensitive. Select sequence from page2-17. No other sequences available.

ELECTRICAL RATINGS

Refer to Fig. 55 page 2-21.

REFERENCES:

Instructions ................................. GEH-3050Renewal parts .............................. GEF-4134

Fig. 43. IC3012E surface-mounted switch

INFORMATION

Operating MechanismNumber

ofCircuits

IC3012Form

Ball-and-rod handle6 E201F*

12 E401M*

Ball-and-rod handlewith spring return

6 E202F*

12 E402M*

* Select sequence from Fig. 46 page 2-17.

DIMENSIONS

No of PointsCW and CCW

A and BRotation in

Degrees

C and DDimensions

in Inches

1 16 32 24 3 15⁄16

3 32 4 7⁄84 40 5 11⁄16

5 48 6 7⁄16

6 56 7 1⁄16

7 64 7 1⁄4

Fig. 44. IC3012E (6-circuit switch with ball-and-rod handle maintained-contact or

spring-return

No of PointsCW and CCW

A and BRotation in

Degrees

C and DDimensions

in Inches

1 16 32 24 3 15⁄16

3 32 4 7⁄84 40 5 11⁄16

5 48 6 7⁄16

6 56 7 1⁄16

7 64 7 1⁄4

Fig. 45. IC3021E (12-circuit switch with ball-and-rod handle maintained-contact or

spring-return

Master Switches2-10

Mill-duty, Surface-mounted—IC3012E


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CONTACT-SEQUENCE DIAGRAMS6-CIRCUIT FRAME SIZE

12-CIRCUIT FRAME SIZE

Fig. 46. Contact Sequence diagrams for Mill duty Surface-mounted IC3012E switches& Contacts Closed1 Contacts Open

Left-handUnit

Handle position Viewed from handle end

Right-handUnit

Clockwise (CW) 43 Counterclockwise (CCW)

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

1 1 1 1 1 & & 1 & & 1 1 1 1 1 2 C¢£C

3 C¢£C 1 1 1 1 1 1 1 1 & & 1 1 1 1 1

1 1 1 1 1 & & 1 1 1 1 1 1 1 1 4 C¢£C

5 C¢£C 1 1 1 1 1 & 1 1 1 & 1 1 1 1 1

1 1 1 1 1 1 1 & 1 1 1 1 1 1 1 6 C¢£C

Sequence 3

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

1 1 1 1 1 1 1 & 1 1 1 1 1 1 1 2 C¢£C

3 C¢£C 1 1 1 1 1 1 1 1 & & & 1 1 1 1

1 1 1 1 & & & 1 1 1 1 1 1 1 1 4 C¢£C

5 C¢£C 1 1 1 1 & & 1 1 1 & & 1 1 1 1

1 1 1 1 & 1 1 1 1 1 & 1 1 1 1 6 C¢£C

Sequence 16

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 & & & & 1 1 1 2 C¢£C

3 C¢£C 1 1 1 & & & & 1 1 1 1 1 1 1 1

1 1 1 & & & 1 1 1 & & & 1 1 1 4 C¢£C

5 C¢£C 1 1 1 & & 1 1 1 1 1 & & 1 1 1

1 1 1 & 1 1 1 1 1 1 1 & 1 1 1 6 C¢£C

Sequence 14

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 & & & & & 1 1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 & & & & & 1 1 2 C¢£C

3 C¢£C 1 1 & & & & 1 1 1 & & & & 1 1

1 1 & & & 1 1 1 1 1 & & & 1 1 4 C¢£C

5 C¢£C 1 1 & & 1 1 1 1 1 1 1 & & 1 1

1 1 & 1 1 1 1 1 1 1 1 1 & 1 1 6 C¢£C

Sequence 8

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

1 1 1 1 1 1 1 & 1 1 1 1 1 1 1 2 C¢£C

3 C¢£C 1 & & & & & & 1 & & & & & & 1

1 & & & & & & 1 & & & & & & 1 4 C¢£C

5 C¢£C 1 & & & & & 1 1 1 1 1 1 1 1 1

1 1 & & & & & 1 & & & & & & 1 6 C¢ £C

7 C¢£C 1 & & & & & & 1 & & & & & & 1

1 & & & & & 1 1 & & & & & & 1 8 C¢£C

9 C¢£C 1 & & & & 1 1 1 1 1 & & & & 1

1 & & & 1 1 1 1 & & 1 & & & 1 10 C¢£C

11 C¢£C 1 & & 1 1 1 1 1 & & 1 1 & & 1

1 & 1 1 1 1 1 1 & & & & & & 1 12 C¢£C

Sequence 55

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 1 1 1 1 & 1 1 2 C¢£C

3 C¢£C 1 1 & & & & & 1 1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 & & & & & 1 1 4 C¢£C

5 C¢£C 1 1 & & & & 1 1 1 1 1 1 1 1 1

1 1 & & & 1 1 1 1 & & & & 1 1 6 C¢ £C

7 C¢£C 1 1 1 1 1 1 1 1 & & & 1 1 1 1

1 1 & & 1 1 1 1 1 1 1 1 1 1 1 8 C¢£C

9 C¢£C 1 1 1 1 1 1 1 1 & & 1 1 1 1 1

1 1 & 1 1 1 1 1 & & 1 1 1 1 1 10 C¢£C

11 C¢£C 1 1 1 1 1 1 1 1 & & & & & 1 1

1 1 & & & & & 1 1 1 1 1 1 1 1 12 C¢£C

Sequence 119

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

1 1 & & & & & 1 & & & & 1 1 1 2 C¢£C

3 C¢£C 1 1 1 1 1 & & & & 1 1 1 1 1 1

1 1 & & & & & 1 1 1 1 1 1 1 1 4 C¢£C

5 C¢£C 1 1 1 1 1 & & 1 & & & & & 1 1

1 1 1 1 1 1 1 1 & & & & & 1 1 6 C¢ £C

7 C¢£C 1 1 & & & & & 1 1 1 & & & 1 1

1 1 & & & & 1 1 1 & & & & 1 1 8 C¢£C

9 C¢£C 1 1 & & 1 1 1 1 1 1 & & & 1 1

1 1 & 1 1 1 1 1 & 1 1 1 1 1 1 10 C¢£C

11 C¢£C 1 1 1 1 1 1 1 1 1 & & 1 1 1 1

1 1 & & & & & & & 1 1 1 1 1 1 12 C¢£C

Sequence 9

&

&

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 & & & 1 1 1 & 1 1 1 1 1 1

1 1 1 1 1 1 1 1 & & & & & 1 1 2 C¢£C

3 C¢£C 1 1 1 1 1 1 1 1 1 1 & & & 1 1

1 1 & & & & & 1 1 1 1 1 1 1 1 4 C¢£C

5 C¢£C 1 1 & & & 1 1 & & & & 1 1 1 1

1 1 & & 1 1 1 1 & & & & & 1 1 6 C¢ £C

7 C¢£C 1 1 & & & & & 1 & & & & & 1 1

1 1 1 1 1 1 1 1 & & & & & 1 1 8 C¢£C

9 C¢£C 1 1 1 1 & & & & & & & 1 1 1 1

1 1 & & & & 1 1 & & 1 & 1 1 1 10 C¢£C

11 C¢£C 1 1 & 1 1 1 1 1 1 1 1 1 & 1 1

1 1 1 1 1 1 1 1 1 1 1 & & 1 1 12 C¢£C

Sequence 127

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

1 1 1 1 1 1 1 & 1 1 1 1 1 1 1 2 C¢£C

3 C¢£C 1 1 1 1 1 1 1 1 & 1 1 1 1 1 1

1 1 1 1 1 1 & 1 1 1 1 1 1 1 1 4 C¢£C

5 C¢£C 1 1 1 1 1 1 1 1 & 1 1 1 1 1 1

1 1 1 1 1 1 & 1 1 1 1 1 1 1 1 6 C¢£C

Sequence 4

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

1 1 1 1 & & & 1 & & & 1 1 1 1 2 C¢£C

3 C¢£C 1 1 1 1 1 1 1 1 & & & 1 1 1 1

1 1 1 1 & & & 1 1 1 1 1 1 1 1 4 C¢£C

5 C¢£C 1 1 1 1 & & 1 1 1 & & 1 1 1 1

1 1 1 1 & 1 1 1 1 1 & 1 1 1 1 6 C¢£C

Sequence 5

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

1 1 1 & & & & 1 & & & & & 1 1 2 C¢£C

3 C¢£C 1 1 1 1 1 1 1 1 & & & & 1 1 1

1 1 1 & 1 1 1 1 1 & & & 1 1 1 4 C¢£C

5 C¢£C 1 1 1 & & & & 1 1 1 1 1 1 1 1

1 1 1 & & & & 1 1 1 & & 1 1 1 6 C¢ £C

7 C¢£C 1 1 1 & & & & 1 1 1 1 1 1 1 1

1 1 1 & & & & 1 & & & & 1 1 1 8 C¢£C

9 C¢£C 1 1 1 1 1 1 & & 1 1 1 1 1 1 1

1 1 1 1 & & & & 1 1 1 1 1 1 1 10 C¢£C

11 C¢£C 1 1 1 & 1 1 1 1 1 1 1 & 1 1 1

1 1 1 1 1 & & & & & & & 1 1 1 12 C¢£C

Sequence 20

Left-handUnit


Right-handUnit


7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 C¢£C 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

1 1 & & & & & 1 & & & & & 1 1 2 C¢£C

3 C¢£C 1 1 1 1 1 1 1 1 & & & & & 1 1

1 1 & & & & & 1 1 1 1 1 1 1 1 4 C¢£C

5 C¢£C 1 1 & & & & & 1 1 & & & & 1 1

1 1 & & & & 1 1 1 1 1 1 1 1 1 6 C¢ £C

7 C¢£C 1 1 1 1 1 1 1 1 & & & 1 1 1 1

1 1 & & & 1 1 1 1 1 1 1 1 1 1 8 C¢£C

9 C¢£C 1 1 1 1 1 1 1 1 & & 1 1 1 1 1

1 1 & & 1 1 1 1 1 1 1 1 1 1 1 10 C¢£C

11 C¢£C 1 1 1 1 1 1 1 1 1 1 1 1 & 1 1

1 1 & 1 1 1 1 1 & & 1 1 1 1 1 12 C¢£C

Sequence 27

Master Switches 2-11

Mill-duty, Surface-mounted—IC3012E


SW

ITC

HES

WHERE TO USEUse on cranes, electric shovels, steel-mill

drives and other machinery under constantsupervision of an operator. Master switchescontrol contactors and other power-switch-ing devices to start, stop, and change speedof motors.

IC3012N master switches are unit-type de-vices intended for use on desk or console.They are adjustable to a maximum of sevenpositions in each direction. Adjustment onpawl permits the operator to choose thekind of position feel desired.

SEVERE-DUTY APPLICATIONS

All IC3012N master switches includesealed ball bearings throughout. Thesesealed bearings protect heavy wear pointsagainst dirt and dust, and provide longerlife, smoother operation, and less mainte-nance. This standard feature is particularlyadvantageous in severe-duty applicationssuch as electric power shovels and draglines.

HOW TO ORDER

Order by complete IC Cat. No., as follows:

(A) (B) (C) (D) (E) (F)IC3012N — — — — — —

(See Fig. 56 for description of blanks)Fill in blanks (A), (B), (D), and (E) using Price Tables 1, 3, and 4.Fill in blank (C) by inserting suffix letters from one of the

standard contact sequences shown in Fig. 54, page 2-20, 21. Othersequences are available.

Fill in blank (F) with ‘‘00’’ when functional nameplates are notrequired. If functional nameplates are required, insert ‘‘NP’’ fornameplate kit. See Table 5 for description.

Fig. 47. Master switch

with ball-and-rod handle

Fig. 48. Master switch

and ball-and-rod handle

and auxiliary contact

Fig. 49. Master switch in

NEMA 1 pedestal

enclosure

ORDERING INFORMATIONTable 1

Numberof

Circuits*

Master Switch with Standard Ball-and-rod Handle2:1 Ratio, Large Gearbox

(Uses IC3012Y124 Gearbox)3:1 Ratio, Large Gearbox

(Uses IC3012Y123 Gearbox)Maintained-contact Spring-return Maintained-contact Spring-return

IC3012Form

IC3012Form

IC3012Form

IC3012Form

6 N224F N221F N223F N220F8 N324H N321H N323H N320H

12 N424M N421M N423M N420M

ELECTRICAL RATING

Refer to Fig. 55 page 2-21.

REFERENCES:

See page 2-19

Table 2—Contact SequenceGroup Letters Appearing

in IC Cat. No.

See Note 2- How to Order

Table 3—Enclosure DataGroup No.Appearing

in ICCat. No.

Type of EnclosureMaximum

No. ofCircuits

00 None (open for desk mounting) 1201 NEMA 1 (general-purpose and driptight) 1203 GE Type 3R (weatherproof) 1207 GE Type 4 and 12 (watertight and dust-tight) 12

Table 4—Gearbox DataForm LettersAppearing inIC Cat. No.

ApplicableGearhead:

IC3012 FormDescription†

AA Y124, Y123 Ball-and-rod handle on right sideAB Y124, Y123 Ball-and-rod handle on left sideAE Y124, Y123 Ball-and-rod handle on right side with

off-position latchAF Y124, Y123 Ball-and-rod handle on left side with

off-position latchAG Y123, Y124 Ball-and-rod handle on right side with

1 NO and 1 NC auxiliary contactsAH Y123, Y124 Ball-and-rod handle on left side with

1 NO and 1 NC auxiliary contacts† Handle on right side means left-hand-operated switch and handle on left side meansright-hand-operated switch (See Fig. 50).

Table 5—Functional Nameplate DataGroup LettersAppearing inIC Cat. No.

Description

00 No functional nameplatesNP Photo etched functional nameplate kit‡

‡ Kit contains 5 nameplates: LOWER OFF RAISE, FWD OFF REV, RIGHT OFF LEFT,LOWER OFF HOIST, --- OFF ---

Master Switches2-12

Step-type, Desk-mounted—IC3012N


SW

ITC

HES

Handle Position

Left-side and right-side handle positionsare as shown in Fig. 50 when under-deskterminals face front (toward operator).

Handle can easily be changed from oneside to the other in the field if desired.

OFF-position Latch

The OFF-position latch holds the masterswitch handle in OFF position until thelatch is released. A handle position is nor-mally chosen to give thumb operation of thelatch. See Fig. 52.

Auxiliary Contact

The auxiliary contact is a latch-controlledcontact intended for dipper trip, brake re-lease or similar application. It can be oper-ated in any position of the master switch.The operating latch is arranged in the sameway as the latch shown in Fig. 51.

REFERENCES:

Instructions....................................GEH-3092Renewal Parts .................................GEF-4341

Fig. 50. Handle positions per NEMA Fig. 51. Handle positions with OFF-position latch or auxiliary contact

DIMENSIONSDrilling and Cutout Plan

NEMA Type 1 Pedestal

Refer to Fig. 68 on page 2-26.

No of Circuits Dimension A(in Inches)

Approximateweight lbs.

6 6 11⁄16 128 10 11⁄16 14

12 14 11⁄16 18

Fig. 52. Dimensions of step-type master switch with ball-and-rod handle.

Dimensions opposite if handle is on right side. For pedestal, see Fig. 64, page 2-24

Fig. 53. Dimensions of step-type master switch with ball-and-rod handle and

auxiliary contact. Below-desk dimensions same as Fig. 52. Dimensions opposite

when handle is on right side




SW

ITC

HES

CONTACT-SEQUENCE DIAGRAMS



Fig. 54. Contact sequence diagrams for IC3012N step-type (only) master switches—See Pg. 2-18.

& Contact closed.1 Contact open.† Descriptive of cam-shaft rotation (See Fig. 50 page 2-19)

CircuitNumber(Top toBottom)

Clockwise(CW)† 4j3 Counterclockwise

(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 ¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12 ¢ £ 1 1 1 1 1 1 1 1 & 1 1 1 1 1 13 ¢ £ 1 1 1 1 1 1 & 1 1 1 1 1 1 1 14 ¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 15 ¢ £ 1 1 1 1 1 1 & 1 & 1 1 1 1 1 16 ¢ £ 1 1 1 1 1 1 & 1 & 1 1 1 1 1 1

Sequence BP



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 ¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12 ¢ £ 1 1 1 1 & & & 1 & & & 1 1 1 13 ¢ £ 1 1 1 1 1 1 1 1 & & & 1 1 1 14 ¢ £ 1 1 1 1 & & & 1 1 1 1 1 1 1 15 ¢ £ 1 1 1 1 & & 1 1 1 & & 1 1 1 16 ¢ £ 1 1 1 1 & 1 1 1 1 1 & 1 1 1 1

Sequence AN



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 ¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12 ¢ £ 1 1 1 1 1 1 & 1 & 1 1 1 1 1 13 ¢ £ 1 1 1 1 1 & & 1 & & 1 1 1 1 14 ¢ £ 1 1 1 1 & & & 1 & & & 1 1 1 15 ¢ £ 1 1 1 1 & & 1 1 1 & & 1 1 1 16 ¢ £ 1 1 1 1 & 1 1 1 1 1 & 1 1 1 1

Sequence FS



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 ¢ £ 1 1 1 1 1 1 1 1 & & & & 1 1 12 ¢ £ 1 1 1 & & & & 1 1 1 1 1 1 1 13 ¢ £ 1 1 1 & & & 1 1 1 & & & 1 1 14 ¢ £ 1 1 1 & & 1 1 1 1 1 & & 1 1 15 ¢ £ 1 1 1 & 1 1 1 1 1 1 1 & 1 1 16 ¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

Sequence MK



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 ¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12 ¢ £ 1 1 1 1 1 1 1 1 & & & & & 1 13 ¢ £ 1 1 & & & & & 1 1 1 1 1 1 1 14 ¢ £ 1 1 & & & & 1 1 1 & & & & 1 15 ¢ £ 1 1 & & & 1 1 1 1 1 & & & 1 16 ¢ £ 1 1 & & 1 1 1 1 1 1 1 & & 1 1

Sequence FA



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 ¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12 ¢ £ 1 1 & & & & & 1 1 1 1 1 1 1 13 ¢ £ 1 1 1 1 1 1 1 1 & & & & & 1 14 ¢ £ 1 1 & & & & & 1 1 1 1 1 1 1 15 ¢ £ 1 1 1 1 1 1 1 1 & & & & & 1 16 ¢ £ 1 1 & & & & & 1 1 1 1 1 1 1 1

Sequence NC



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1 ¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12 ¢ £ 1 1 1 1 1 1 1 1 & 1 1 1 1 1 13 ¢ £ 1 1 1 1 1 1 1 1 1 & 1 1 1 1 14 ¢ £ 1 1 1 1 1 1 1 1 1 1 & 1 1 1 15 ¢ £ 1 1 1 1 1 1 & 1 1 1 1 1 1 1 16 ¢ £ 1 1 1 1 1 & 1 1 1 1 1 1 1 1 17 ¢ £ 1 1 1 1 & 1 1 1 1 1 1 1 1 1 18 ¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

Sequence CH



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12¢ £ 1 1 1 1 1 1 1 1 & & & 1 1 1 13¢ £ 1 1 1 1 & & & 1 1 1 1 1 1 1 14¢ £ 1 1 1 1 & & 1 1 1 & & 1 1 1 15¢ £ 1 1 1 1 & 1 1 1 1 1 & 1 1 1 16¢ £ 1 1 1 1 & & & 1 & & & 1 1 1 17¢ £ 1 1 1 1 & & & 1 & & & 1 1 1 18¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

Sequence AF



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 13¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 14¢ £ 1 1 1 1 & & & 1 & & & 1 1 1 15¢ £ 1 1 1 1 1 1 1 1 & & & 1 1 1 16¢ £ 1 1 1 1 & & & 1 1 1 1 1 1 1 17¢ £ 1 1 1 1 & & 1 1 1 & & 1 1 1 18¢ £ 1 1 1 1 & 1 1 1 1 1 & 1 1 1 1

Sequence GL



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12¢ £ 1 1 1 1 & & & 1 & & & 1 1 1 13¢ £ 1 1 1 1 1 1 1 1 & & & 1 1 1 14¢ £ 1 1 1 1 & & & 1 1 1 1 1 1 1 15¢ £ 1 1 1 1 & & 1 1 1 & & 1 1 1 16¢ £ 1 1 1 1 & 1 1 1 1 1 & 1 1 1 17¢ £ 1 1 1 1 & & & 1 & & & 1 1 1 18¢ £ 1 1 1 1 & & & 1 & & & 1 1 1 1

Sequence GV



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12¢ £ 1 1 & & & & & 1 & & & & & 1 13¢ £ 1 1 1 1 1 1 1 1 & & & & & 1 14¢ £ 1 1 & & & & & 1 1 1 1 1 1 1 15¢ £ 1 1 & & & & 1 1 1 & & & & 1 16¢ £ 1 1 & & & 1 1 1 1 1 & & & 1 17¢ £ 1 1 & & 1 1 1 1 1 1 1 & & 1 18¢ £ 1 1 & 1 1 1 1 1 1 1 1 1 & 1 1

Sequence AJ



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12¢ £ 1 & & & & & & 1 1 1 1 1 1 1 13¢ £ 1 1 1 1 1 1 1 1 & & & & & & 14¢ £ 1 & & & & & 1 1 1 & & & & & 15¢ £ 1 & & & & 1 1 1 1 1 & & & & 16¢ £ 1 & & & 1 1 1 1 1 1 1 & & & 17¢ £ 1 & & 1 1 1 1 1 1 1 1 1 & & 18¢ £ 1 & 1 1 1 1 1 1 1 1 1 1 1 & 1

Sequence FM

Master Switches2-14



SW

ITC

HES

CONTACT-SEQUENCE DIAGRAMS (Con’t)12-CIRCUIT FRAME SIZE



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 13¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 14¢ £ 1 1 & & & & & 1 & & & & & 1 15¢ £ 1 1 1 1 1 1 1 1 & & & & & 1 16¢ £ 1 1 & & & & & 1 1 1 1 1 1 1 17¢ £ 1 1 & & & & 1 1 1 & & & & 1 18¢ £ 1 1 & & & 1 1 1 1 1 & & & 1 19¢ £ 1 1 & & 1 1 1 1 1 1 1 & & 1 1

10¢ £ 1 1 & 1 1 1 1 1 1 1 1 1 & 1 111¢ £ 1 1 & & & & & 1 & & & & & 1 112¢ £ 1 1 & & & & & 1 & & & & & 1 1

Sequence DK



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12¢ £ 1 & & & & & & 1 & & & & & & 13¢ £ 1 1 1 1 1 1 1 1 & & & & & & 14¢ £ 1 & & & & & & 1 1 1 1 1 1 1 15¢ £ 1 1 1 1 1 1 1 1 & & & & & & 16¢ £ 1 & & & & & & 1 1 1 1 1 1 1 17¢ £ 1 & & & & & 1 1 1 & & & & & 18¢ £ 1 & & & & 1 1 1 1 1 & & & & 19¢ £ 1 & & & 1 1 1 1 1 1 1 & & & 1

10¢ £ 1 & & 1 1 1 1 1 1 1 1 1 & & 111¢ £ 1 & 1 1 1 1 1 1 1 1 1 1 1 & 112¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

Sequence GE



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12¢ £ 1 1 1 1 1 1 1 1 & & & & & & 13¢ £ 1 & & & & & & 1 1 1 1 1 1 1 14¢ £ 1 1 1 1 1 1 1 1 & & & & & & 15¢ £ 1 & & & & & & 1 1 1 1 1 1 1 16¢ £ 1 1 1 1 1 1 1 1 & & & & & & 17¢ £ 1 & & & & & & 1 1 1 1 1 1 1 18¢ £ 1 & & & & & 1 1 1 & & & & & 19¢ £ 1 & & & & 1 1 1 1 1 & & & & 1

10¢ £ 1 & & & 1 1 1 1 1 1 1 & & & 111¢ £ 1 & & 1 1 1 1 1 1 1 1 1 & & 112¢ £ 1 & 1 1 1 1 1 1 1 1 1 1 1 & 1

Sequence AL



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 1 & & & & & & &2¢ £ & & & & & & & 1 1 1 1 1 1 1 13¢ £ 1 1 1 1 1 1 1 1 & & & & & & &4¢ £ 1 1 1 1 1 1 1 1 & & & & & & &5¢ £ & & & & & & & 1 1 1 1 1 1 1 16¢ £ & & & & & & & 1 1 1 1 1 1 1 17¢ £ 1 1 1 1 1 & & & & & 1 1 1 1 18¢ £ 1 1 1 1 1 1 & & & 1 1 1 1 1 19¢ £ & & & & 1 1 1 1 1 1 1 & & & &

10¢ £ & & & 1 1 1 1 1 1 1 1 1 & & &11¢ £ & & 1 1 1 1 1 1 1 1 1 1 1 & &12¢ £ & 1 1 1 1 1 1 1 1 1 1 1 1 1 &

Sequence AA

Fig. 54 (Cont). Standard contact sequence diagrams for step-type (only) master switches—See Pg. 2-18

& Contact closed.1 Contact Open.† Descriptive of cam-shaft rotation (See Fig. 50, page 2-19).

MAIN CONTACT RATINGS

VoltsAmperes

Carry Make Break115 ac 15 75 75230 ac 15 75 50460 ac 15 75 18575 ac 15 75 14125 dc inductive 15 75 1.8250 dc inductive 15 75 0.7600 dc inductive 15 75 0.24

AUXILIARY CONTACT RATINGSAc Interrupting Dc Inductive

Volts Volt-amperes Volts Amperes0-115 330 115 1.0

115-600 345 230 0.3600 0.1

Fig. 55. Contact ratings

IC3012N

(A)

XXX

(B)

X

(C)

XX

(D)

XX

(E)

XX

(F)

XX

Œ Œ Œ Œ Œ Œ Œ

Functional NameplateData Group No.(Table 5)

Gearhead Data Form Letters(Table 4)

Enclosure Data Group No. (Table 3)

Contact Sequence Group Letters (Table 2)

Actual No. of Circuits in the Switch (Table 1)

Frame Size (Maximum No. of Circuits), GearheadSize and Ratio, Type of Operation (Table 1)

Basic DS Cat. No.

Fig. 56. Example of complete IC Cat. No.



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 1 & & & & & & &2¢ £ 1 1 1 1 1 1 1 1 1 1 1 1 1 & &3¢ £ 1 1 1 1 1 1 1 1 & & & & & & &4¢ £ 1 1 1 1 1 1 1 1 & & & & & & &5¢ £ & & & & & & & 1 1 1 1 1 1 1 16¢ £ & & & & & & & 1 1 1 1 1 1 1 17¢ £ 1 1 1 1 1 & & & & & 1 1 1 1 18¢ £ 1 1 1 1 1 1 & & & 1 1 1 1 1 19¢ £ & & & & 1 1 1 1 1 1 1 & & & &

10¢ £ & & & 1 1 1 1 1 1 1 1 1 & & &11¢ £ & & 1 1 1 1 1 1 1 1 1 1 1 & &12¢ £ & 1 1 1 1 1 1 1 1 1 1 1 1 1 &

Sequence AB



(CCW)†

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 12¢ £ 1 1 1 1 1 1 & 1 & 1 1 1 1 1 13¢ £ 1 1 1 1 1 & & 1 & & 1 1 1 1 14¢ £ 1 1 1 1 & & & 1 & & & 1 1 1 15¢ £ 1 1 1 & & & & 1 & & & & 1 1 16¢ £ 1 1 & & & & & 1 & & & & & 1 17¢ £ 1 1 1 1 1 1 & 1 1 1 1 1 1 1 18¢ £ 1 1 1 1 1 1 1 1 & 1 1 1 1 1 19¢ £ 1 1 1 1 1 1 1 1 & & & & & 1 1

10¢ £ 1 1 & & & & & 1 & & & & & 1 111¢ £ 1 1 & 1 1 1 1 1 1 & & & & 1 112¢ £ 1 1 & & & & & 1 1 1 1 1 1 1 1

Sequence GG




SW

ITC

HES

WHERE TO USE

Use on cranes, electric shovels, steel millsand other variable speed drives.

The selection of the stepless elementshould be based on the required power ofthe reference signal.

The compactness of the switch and itsdesk-mounting feature not only save valu-able cab space, but provide for better visi-bility and efficiency of the operator. This isparticularly desirable where the operatorhas numerous motions to control. This mas-ter switch can be mounted on a desk orconsole or it can be furnished with NEMA 1,pedestal-type, free-standing enclosure.

SEVERE-DUTY APPLICATIONS

All IC3012N master switches includesealed ball bearings throughout. Thesesealed ball bearings protect heavy wearpoints against dirt and dust, and providelonger life, smoother operation, and lessmaintenance. This standard feature is par-ticularly advantageous in severe-duty appli-cations such as electric power shovels anddraglines.

RHEOSTAT TYPE

For use in circuits requiring stepless ele-ments with output capacity of 100 watts.This switch is available with maximum of 8independent circuits and maximum of tworheostat elements mounted on the bottom.

Each four-inch rheostat element is rated100 watts maximum with standard ohmicvalues as shown in Fig. 67 page 2-25.

STANDARD POTENTIOMETER

TYPE

For use in circuits requiring a steplesselement with output capacity of 2 watts. Thisswitch is available with maximum of 4 inde-pendent circuits. Standard offering includesone 2-watt potentiometer mounted on bot-tom of switch with standard ohmic values asshown in Fig. 67 page 2-25 and elementarrangement per Fig. 71A&B page 2-26.Center tap is standard.

SEVERE SHOCK AND VIBRATION

POTENTIOMETER TYPE

This switch is available with maximum of8 independent circuits and includes one2.5-watt 2500-ohm potentiometer arrangedper Fig. 71A page 2-26.

INDUCTION TYPE

The IC3012 stepless induction masterswitch consists of the popular IC3012Ndesk-mounted master switch with a diffen-tial transformer mounted on the end of theshaft. The differential transformer consistsof a stator with three coils and a uniquelyshaped rotor. As the handle position ischanged, the rotor changes the amount ofcoupling between the three coils of the sta-tor and produces an output. Fig. 61 illus-trates this output voltage and clearly showsthat very fine control may be obtained atcreeping speeds. In the low-speed rangewhere fineness of control is desired, a largechange in handle position provides a smallchange in output. At high speeds where a

fast response is required, a small change inhandle position provides a large change inoutput.

The neutral, or OFF position, is notchedto provide positive position ‘‘feel.’’ All otherpoints are un-notched to provide the oper-ator with a truly smooth, stepless ‘‘feel.’’The switch produces no torque to opposemovement of the handle, minimizing oper-ator fatigue. Contacts are used for direc-tional purposes to select the reversing con-tactors.

The primary coil has a maximum ratingof 125 volts. Any change in the input voltagewill directly affect the output characteristics.

The output curve shown is based on aload resistance of 1000 ohms. With thisload, the effective power output is 0.25watts.

Fig. 57. Stepless rheostat Fig. 58. Stepless pentiometer Fig. 59. Stepless induction

Fig. 60. Output curve to load

Master Switches2-16

Stepless-type, Desk-mounted—IC3012N


SW

ITC

HES

ORDERING INFORMATION

HOW TO ORDER

Order by complete IC Cat. No., as follows:

(A) (B) (C) (D) (E) (F)IC3012N — — — — — —

(See Fig. 61 for description of blanks)1. Fill in blanks (A), (B), (D), and (E) using Price Tables 6, 8, and

9.2. Fill in blank (C) by inserting suffix letters from one of the

standard contact sequences shown in Fig. 67, page 2-25. Se-quence diagram will indicate rating of rheostat or potiometerused.

3. Fill in blank (F) with ‘‘00’’ when functional nameplates are notrequired. If functional nameplates are required, insert ‘‘NP’’ fornameplate kit. See Table 10 for description.

DIMENSIONS

Refer to pages 2-24.

ELECTRICAL RATINGS

Refer to Fig. 55, page 2-21.

REFERENCES:

Instructions..........................................................................GEH-3092Renewal Parts .......................................................................GEF-4341

Table 6

Numberof

Circuits

Ball-and-rod HandleMaintained-contact Spring-return

IC3012Form

IC3012Form

RHEOSTAT TYPEUses IC3012Y123 gearhead (3:1 ratio, large gearbox)

8 N723H N720H

STANDARD POTENTIOMETER TYPEUses IC3012Y123 gearhead (3:1 ratio, large gearbox)

4 N627D N633D

SEVERE SHOCK AND VIBRATION POTENTIOMETER TYPEUses IC3012Y123 gearhead (3:1 ratio, large gearbox)

8 N731H N732H

INDUCTION TYPEUses IC3012Y124 gearhead (2:1 ratio, large gearbox)

4 RH N673D N670D

LH N674D N671D

8 RH N773H N770H

LH N774H N771H

Table 7—Contact SequenceGroup Letters Appearing

in IC Cat. No.

See Note 2 How To Order

Table 8—Enclosure DataGroup No.Appearing

in ICCat. No.

Type of EnclosureMaximum

No. ofCircuits

00 None (open for desk mounting) All01 NEMA 1 (general-purpose and driptight) 1203 GE Type 3R (weatherproof) 1207 GE Type 4 and 12 (watertight and dust-tight) 1205 NEMA 1 Induction Transformer 8

Table 9—Gearbox DataForm LettersAppearing inIC Cat. No.

ApplicableGearhead:

IC3012 FormDescription†

AA Y123, Ball-and-rod handle on right sideY124

AB Y123, Ball-and-rod handle on left sideY124

AE Y123, Ball-and-rod handle on right side withY124 OFF-position latch

AF Y123, Ball-and-rod handle on left side withY124 OFF-position latch

AG Y123, Ball-and-rod handle on right side withY124 1 NO and 1 NC auxiliary contacts

AH Y123, Ball-and-rod handle on left side withY124 1 NO and 1 NC auxiliary contacts

ALAT

Y124 onlyY123 only

Ball-and-rod handle on right side with1 NO and 1 NC auxiliary contactsoperated by pushbutton in knob

AMAS

Y124 onlyY123 only Ball-and-rod handle on left side with

1 NO and 1 NC auxiliary contactsoperated by pushbuttom in knob

† Handle on right side means left-hand-operated switch and handle on left side meansright-hand-operated switch (See Fig. 50 page 2-19).

Table 10—Functional Nameplate DataGroup LettersAppearing inIC Cat. No.

Description

00 No functional nameplatesNP Photo etched functional nameplate kit‡

‡ Kit contains 5 nameplates: LOWER OFF RAISE, FWD OFF REV, RIGHT OFF LEFT,LOWER OFF HOIST, --- OFF ---

IC3012N(A)

XXX

(B)

X

(C)

XX

(D)

XX

(E)

XX

(F)

XX

Œ Œ Œ Œ Œ Œ Œ

Functional NameplateData Group No.(Table 10)

Gearhead Data FormLetters (Table 9)

Enclosure Data Group No. (Table 8)

Contact Sequence Group Letters (Table 7)

Actual No. of Circuits in the Switch (Table 6)

Frame Size (Maximum No. of Circuits), GearheadSize and Ratio, Type of Operation, and Type ofStepless Element (Table 6)

Basic IC Cat. No.

Fig. 61. Example of complete IC Cat. No.


Stepless-type, Desk-Mounted—IC3012N


SW

ITC

HES

DIMENSIONS AND DIAGRAMS

No. of Circuits Dimension A(In inches)

Approxweight lbs

1-4 6 11⁄16 145-8 10 11⁄16 18

Fig. 62. Dimensions of stepless master switch with ball-and-rod handle and stepless

rheostat control element. Dimensions opposite when handle is on right side.

Dimensions A same for Fig. 63

Fig. 63. Dimensions of stepless induction control element

Approx.

weight

110 lbs

Type Dim. A Dim. B

Step-type, 12-circuit max 20 in. 20 7⁄8Stepless-type, 4-circuit max† 20 in. 20 7⁄8Stepless-type, 8-circuit max† 24 1⁄4 25 1⁄8

† For induction type, refer to Company.

Fig. 64. Dimensions of master switch in NEMA Type 1 pedestal. Head dimensions

same as standard enclosure. One set of brackets supplied for floor mounting. May

be used for wall mounting as shown

Fig. 65. Dimensions of stepless master switch with ball-and-rod handle and auxiliary

contact. Below-desk dimensions same as Fig. 62, or 63. Dimensions are opposite

when handle is on right side

Fig. 66. Dimensions of stepless master switch with ball-and-rod handle and OFF-

position latch. Below-desk dimensions same as Fig. 62, or 63. Dimensions are

opposite when handle is on the right side

Master Switches2-18

Stepless-type, Desk-Mounted—IC3012N


SW

ITC

HES

CONTACT-SEQUENCE DIAGRAMS4-CIRCUIT FRAME SIZE


f Indicates contact closed.h Indicates contact open.

& Severe shock and vibration potentiometer.† Description of shaft rotation (see Fig. 50, page 2-19)

‡ Element ‘‘A’’ Fig. 71 page 2-26.# Element ‘‘B’’ Fig. 71 page 2-26.

Fig. 67

Form N670D, 671D, 673D, 674D

CIRCUITNUMBER(TOP TO

BOTTOM)

CLOCKWISE 4j3 COUNTERCLOCKWISE(CW)† (CCW)†

90°4MAX3

OFF

90°4MAX3

1 ¢ £ 8° 8°2 ¢ £ BLANK3 ¢ £ 13°4 ¢ £ 13°

Induction Sequence BF

Form N670D, 671D, 673D, 674DForm N627D, 633D


BOTTOM)


135°4MAX3

OFF

135°4MAX3

1 ¢ £ 8° 8°2 ¢ £ 13°13°3 ¢ £ 13°4 ¢ £ 13°

Induction (90° max) Sequence AGPotentiometer‡ 10K V 2 watt Sequence AE

Form N670D, 671D, 673D, 674D


BOTTOM)


90°4MAX3

OFF

90°4MAX3

1 ¢ £ 8° 8°2 ¢ £ 13°3 ¢ £ 13°4 ¢ £ 8° 8°

Induction Sequence BC

Form N770H, 771H, 773H, 774H


BOTTOM)


90°4MAX3

OFF

90°4MAX3

1 ¢ £ 13°13°2 ¢ £ 13°13°3 ¢ £ 13°4 ¢ £ 13°5 ¢ £ 8°6 ¢ £ 8°7 ¢ £ BLANK8 ¢ £ BLANK

Induction Sequence AB

Form N730HForm N720H, 723H


BOTTOM)


135°4MAX3

OFF

135°4MAX3

1 ¢ £ 13°13°2 ¢ £ 13°13°3 ¢ £ 13°4 ¢ £ 13°5 ¢ £ 13°13°6 ¢ £ 13°7 ¢ £ 13°8 ¢ £ Spare

Potentiometer*# 2.5K V 2.5 watt Sequence DMRheostat (2) 0.5K V 100 watt Sequence AA

Form N770H, 771H, 773H, 774HForm N731H


BOTTOM)


135°4MAX3

OFF

135°4MAX3

1 ¢ £ 8° 8°2 ¢ £ 8°3 ¢ £ 13°13°4 ¢ £ 13°13°5 ¢ £ 8°6 ¢ £ 8° 8°7 ¢ £ BLANK8 ¢ £ BLANK

Induction (90° max) Sequence CMPotentiometer*# 2.5K V 2.5 watt Sequence GL

Form N720H, 723HForm N731H


BOTTOM)


135°4MAX3

OFF

135°4MAX3

1 ¢ £ 13°13°2 ¢ £ 13°13°3 ¢ £ 13°4 ¢ £ 13°5 ¢ £ 13°6 ¢ £ 13°7 ¢ £ 13°8 ¢ £ 13°

Rheostat (2) 0.5K V 100 watt Sequence DGPotentiometer*# 2.5K V 2.5 watt Sequence FM

Form N720H, 723HForm N731H


BOTTOM)


135°4MAX3

OFF

135°4MAX3

1 ¢ £ 13°13°2 ¢ £ 13°13°3 ¢ £ 13°4 ¢ £ 13°5 ¢ £ 13°13°6 ¢ £ 13°7 ¢ £ 13°8 ¢ £ 8° 8°

Rheostat 1.8K V 100 watt Sequence FSPotentiometer*# 2.5K V 2.5 watt Sequence DT

Form N720H, 723H


BOTTOM)


135°4MAX3

OFF

135°4MAX3

1 ¢ £ 13°13°2 ¢ £ 13°13°3 ¢ £ 13°4 ¢ £ 13°5 ¢ £ 13°13°6 ¢ £ 13°7 ¢ £ 13°8 ¢ £ 13°

Rheostat(2) 0.5K V 100 watt Sequence DT

Form N770H, 771H, 773H, 774H


BOTTOM)


90°4MAX3

OFF

90°4MAX3

1 ¢ £ 8° 8°2 ¢ £ 13°13°3 ¢ £ 13°4 ¢ £ 13°5 ¢ £ 13°6 ¢ £ 13°7 ¢ £ 13°8 ¢ £ 13°

Induction Sequence DS

Form N770H, 771H, 773H, 774H


BOTTOM)


90°4MAX3

OFF

90°4MAX3

1 ¢ £ 13°13°2 ¢ £ 13°13°3 ¢ £ 13°13°4 ¢ £ 13°5 ¢ £ 13°6 ¢ £ 13°7 ¢ £ 13°8 ¢ £ 8° 8°

Induction Sequence ER

Form N770H, 771H, 773H, 774H


BOTTOM)


90°4MAX3

OFF

90°4MAX3

1 ¢ £ 13°13°2 ¢ £ 13°13°3 ¢ £ 13°4 ¢ £ 13°5 ¢ £ 13°13°6 ¢ £ 13°7 ¢ £ 13°8 ¢ £ 13°

Induction Sequence CS

Form N670D, 671D, 673D, 674D


BOTTOM)


90°4MAX3

OFF

90°4MAX3

1 ¢ £ 8° 8°2 ¢ £ 13°13°3 ¢ £ 22° 22°4 ¢ £ 72° 72°

Induction Sequence AA


Stepless-type, Desk-mounted—IC3012N


SW

ITC

HES

DIMENSIONS AND DIAGRAMS

Fig. 68. IC3012N Drilling and cutout plan for desk mounting (Step or stepless except

induction type)

Fig. 69. Schematic diagram for stepless induction type output network

IC3603A132A

DIMENSIONS—IC3012P

IC3012P652AC04AC04BT IC3012P621CU04CU04CMC D E F C D E F

9 1⁄40 8 3⁄80 48° 48° 9 7⁄80 9 3⁄80 48° 48°

Fig. 70. Desk-mounted joy-stick-operated master switch Fig. 72. Potiometer for use with IC3012N, M & P switches

Master Switches2-20

Stepless-type, Desk-Mounted—IC3012N, IC3012P


SW

ITC

HES

WHERE TO USE

Use on operator’s stations, control panelsor operator’s desk on rolling mills, wherefrequent operation, rough handling, vibra-tion or shock are encountered.

The IC3012M master switch is a two-partswitch mounted with the switching mecha-nism behind the panel or desk top and theoperating handle and escutcheon on thefront.

Other forms of IC3012M switches areavailable. Refer to company.

Joy-stick-operated—IC3012P

WHERE TO USE

Shovel operators can control two motionswith one hand.

Stepless operation of both motions pro-vides for greater spotting accuracy andfaster movement of loads. The handle of thejoy stick can be moved into any quadrantand any position within that quadrant. Bycontrolling both motions simultaneously,the operator is free to devote more atten-tion to controlling the hoist motion with hisother hand.

Other forms of joy stick switches are avail-able. Refer to company with description.

HOW TO ORDER

Order by switch form number. EXAM-PLE: IC3012M151**4C and indicate con-tact sequence Fig. 75.

Electrical Ratings, see page 2-21.

Numberof

Circuits

SteplessPotentiometer(10K V 2 watt)

SeeSequence AS

BelowMaintained-contact

IC3012Form

6 M652AS6


BOTTOM)

CLOCKWISE 4j3 COUNTERCLOCKWISE(CW) (CCW)

150°4MAX3

OFF

150°4MAX3

1 ¢ £ 8° 8°2 ¢ £ 13° 13°3 ¢ £ 13° 13°4 ¢ £ 13°5 ¢ £ 13°6 ¢ £ 8° 8°

Sequence AS

Numberof

Circuits

Two Points Each Side of OFF(180 Degrees Max Rotation)

Maintained-contact Spring-return

IC3012Form

IC3012Form

4 M151**4 M157**4

** Select Sequence CC, CV, FX or EB from Fig. 75

Circuits Maintained Contact 3:1 Ratio Spring Return 2:1 RatioEach Potentiometer Induction Transformer

Motion (2.5K V 2.5 watt)Cat # Cat #

4 IC3012P621CU04CU04CM IC3012P652AC04AC04BT

Order by catalog number above. Contact sequence shown Fig. 77.

Fig. 73. IC3012M master switch with pistol-grip

handle—(IC3012Y101C)

Fig. 74. Dimensions

Fig. 76. Joy-stick master switch for desk mounting


Clockwise(CW) 4j3 Counterclockwise

(CCW)

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

2¢ £ 1 1 1 1 1 1 & 1 & 1 1 1 1 1 1

3¢ £ 1 1 1 1 1 1 & 1 1 1 1 1 1 1 1

4¢ £ 1 1 1 1 1 1 1 1 & 1 1 1 1 1 1

Sequence CC



(CCW)

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 1 & 1 1 1 1 1 1

2¢ £ 1 1 1 1 1 1 1 & & 1 1 1 1 1 1

3¢ £ 1 1 1 1 1 1 & & 1 1 1 1 1 1 1

4¢ £ 1 1 1 1 1 1 & 1 1 1 1 1 1 1 1

Sequence CV



(CCW)

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 & 1 1 1 1 1 1 1 1

2¢ £ 1 1 1 1 1 1 & 1 1 1 1 1 1 1 1

3¢ £ 1 1 1 1 1 1 1 1 & 1 1 1 1 1 1

4¢ £ 1 1 1 1 1 1 1 1 & 1 1 1 1 1 1

Sequence FX

Fig. 75. Contact sequence IC3012M switches



(CCW)

7 6 5 4 3 2 1

OFF 1 2 3 4 5 6 7

1¢ £ 1 1 1 1 1 1 1 & 1 1 1 1 1 1 1

2¢ £ 1 1 1 1 1 1 1 1 & & 1 1 1 1 1

3¢ £ 1 1 1 1 1 & & 1 1 1 1 1 1 1 1

4¢ £ 1 1 1 1 1 & 1 1 1 & 1 1 1 1 1

Sequence EB


BOTTOM)


135°4MAX3

OFF

135°4MAX3

1 ¢ £ 8° 8°2 ¢ £ 13° 13°3 ¢ £ 13°4 ¢ £ 13°

Sequence CU


BOTTOM)


90°4MAX3

OFF

90°4MAX3

1 ¢ £ 8° 8°2 ¢ £ 13°3 ¢ £ 13°4 ¢ £ 72° 72°

Sequence AC

Fig. 77. Contact sequences IC3012P switches


Pistol-grip-operated—IC3012M


SW

ITC

HES

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