Rotary Switches 80www.elma.com

24 positions high grade switches

Up to 12 channels

Smooth and low noise transition

Gold plated contacts: 3 micron

Low switching torque

Series or ladder attenuator

For THT or SMT resistors

Type Comparison

Features / Switch Type Series A Series N Series R

Attenuator Type Series Series Step

Standard switching torque 4.0 Ncm 1.5 Ncm 8.0 Ncm

Resistor style THT SMT (mounted) THT

Standard product variety Number of channels (wafers)

IP60 or IP68

Config. end stops

Shaft diameter;6 mm or ¼"

Number of channels (wafers)

Resistor value: 10k, 50k, 100k

IP60 or IP68

Config. end stops

Shaft diameter;6 mm or ¼"

Number of channels (wafers)

IP60 or IP68

Config. end stops

Shaft diameter;6 mm or ¼"

See page 81, 84/85 82, 84/85 83-85

Attenuator box High end FET amplifier Audiophile tube amplifier

Audio Switches Overview

Series A

Series R

Series N

Application Examples

Example of Customer Modified Switch

We also sell standard and customized switch components enabling the customers to create their very unique and specific switching functions thanks to the modular switch concept.

Attenuator box by GoldpointTM

Rotary Switches81 www.elma.com

24 positions high grade switch

Up to 12 channels

Smooth and low noise transition

Gold plated contacts: 3 micron

Low switching torque

Series attenuator

For THT resistors

Standard Product Variety

Number of channels (wafers)IP60 or IP68Configurable end stopsShaft diameter; 6 mm or ¼"

Possible Customization

Shaft dimensions and shapeBushing dimensionsSwitching torqueWafer spacer dimensionsOthers

Audio Switch Series A

Resistors are not included

Preference Types Selection Chart1

Switching Mode Resistor Value 1-Channel Version 2-Channel Version

Shorting Any 04A1A00 04A2A00

Typical Applications

High end volume control

2-Channel Version (2 Wafers)

Drawings

6

1

9,5

43

1,6

1720

25

ø6

26

B A1 C

ø40

ø1,6

M10

x 0

,75

1,5

2,5

ø10

,2

7,5

2,7

ø10

,2

R1 R2 R24AC

B

Circuit diagramFront panel cut out Circuit diagram

1 For other types/options, see type key.

Rotary Switches 82www.elma.com

R1 R2 R23 13

2

Circuit diagram

1

9,5

46

10

2,54 2,540,64

17,518,5

25

26

20

4

ø32

ø1,6

1 2 3

ø6

M10

x 0

,75

1,5

2,5

24 positions high grade switch

Up to 12 channels

Smooth and low noise transition

Gold plated contacts: 3 micron

Low switching torque

Series attenuator

SMT resistors (mounted)

Standard Product Variety

Number of channels (wafers)Resistor value: 10k, 50k, 100kIP60 or IP68Configurable end stopsShaft diameter; 6 mm or ¼"

Possible Customization

Shaft dimensions and shapeBushing dimensionsSwitching torqueWafer spacer dimensionsOthers

Audio Switch Series N

Preference Types Selection Chart1

Switching Mode Resistor Value 1-Channel Version 2-Channel Version

Shorting

10 kOhms 04A1N01 04A2N01

50 kOhms 04A1N05 04A2N05

100 kOhms 04A1N10 04A2N10

Typical Applications

High end volume control

2-Channel Version (2 Wafers)

Drawings

Front panel cut out Circuit diagram

1 For other types/options, see type key.

7,5

2,7

ø10

,2

Front panel cut out

Rotary Switches83 www.elma.com

6

1

9,5

78

217,3 17 ,3 17,320

25

26

IN/OUT1

G

ø1,6

ø6

M10

x 0

,75

ø43

1,5

2,5

7,5

2,7

ø10

,2

IN

G

OUT

R1

a

R2

a

R2

4a

R1

b

R2

b

R2

4b

Circuit diagram

24 positions high grade switch

Up to 6 channels

Smooth and low noise transition

Gold plated contacts: 3 micron

Low switching torque

Ladder attenuator

For THT resistors

Standard Product Variety

Number of channels (wafers)IP60 or IP68Configurable end stopsShaft diameter; 6 mm or ¼"

Possible Customization

Shaft dimensions and shapeBushing dimensionsSwitching torqueWafer spacer dimensionsOthers

Audio Switch Series R

Resistors are not included

Preference Types Selection Chart1

Switching Mode Resistor Value 1-Channel Version 2-Channel Version

Shorting Any 04A1R00 04A2R00

Typical Applications

High end volume control

2-Channel Version (4 Wafers)

Drawings

Front panel cut out Circuit diagram

1 For other types/options, see type key.

Rotary Switches 84www.elma.com

Audio Switches General

Specifications

Mechanical DataResolution: ........................................................................24 positions max. (15° indexing)Switching torque (new condition):........................................Series A: 4.0 Ncm, series N: 1.5 Ncm, series R: 8.0 Ncm (+/- 25%)Rotational life: ...................................................................25,000 switching cycles min.Fastening torque of nut: .....................................................300 Ncm max.

Electrical DataFunction: ...........................................................................1 x 24 poles/positions per wafer

(max. 12 wafers; series A/N: 12 channels, series R: 6 channels)Switching mode: ................................................................ShortingLoad current: .....................................................................2 A max. (resistive load)Switching voltage:..............................................................42 VDC max.Contact resistance (new condition): .....................................100 mOhms max.Insulation resistance:..........................................................1012 Ohms min. (contact to contact/housing)Switching capacitance: .......................................................1 pF max. (contact to contact)Dielectric withstanding voltage:...........................................500 VDC during 60 seconds

Material DataShaft: ................................................................................Stainless steelBushing/housing:...............................................................Zinc diecast, zinc plated and passivatedNut: ..................................................................................Brass, zinc plated and passivatedContact plating:.................................................................AuCo (hard gold); 3 µmInsulation material: ............................................................PCB: FR4 (glass fiber epoxy), rotor: Polybutylene (PBTB)Soldering leads:.................................................................Alloy copper, AuCo plated (hard gold)

Environmental DataOperating temperature range:............................................-40 to +85°CIP sealing: .........................................................................IP60, optional IP68 (2 bar, 1 hour) shaft/front panel sealingVibration: ..........................................................................10 Grms max. @ 10 to 2000 HzFlammability:.....................................................................UL94-HB

Packaging SizesTray: .................................................................................10 pcs.

Soldering Conditions

Hand soldering:.................................................................300°C max. during 3 s max.Wave soldering:.................................................................280°C max. peak temperature during 5 s max.

Can be used in many cases in place of shortened bushes; made of glass-fibre

reinforced plastic to compensate the front panel thickness; available in two

standard lengths.

Length L Packaging Unit Order Number

3.5 mm 10 pcs. 4124-31

3.5 mm 100 pcs. 4124-30

5.5 mm 10 pcs. 4124-36

5.5 mm 100 pcs. 4124-35

Special Wafer Spacing

Our spacers allow the following wafer spacing:

L = 21.3 mm or 25.5 mm

Spacers

Rotary Switches85 www.elma.com

Audio Switches General

Type Key

0 4 A X X X X - X X X X X X X X

Number of Channels

Series

A - Series AN - Series NR - Series R

Resistor Value (N Series Only)

00 - Without resistors01 - 10 kOhms05 - 50 kOhms10 - 100 kOhms

IP Sealing

00 - IP6030 - IP68

Shaft Diameter

0 - 6 mmZ -¼"

Shaft Length (AL)

000 - 25 mmxxx - Custom1

(e.g. 18.5mm = 185)

1 Customized Shaft Length

Please state shaft length (AL) measured from mounting face

(max. AL = 50 mm).

Factory Set End Stop

00 - 24 pos.23 - 23 pos.22 - 22 pos.21 - 21 pos.20 - 20 pos.19 - 19 pos.18 - 18 pos.17 - 17 pos.16 - 16 pos.15 - 15 pos.14 - 14 pos.13 - 13 pos.12 - 12 pos.11 - 11 pos.10 - 10 pos.09 - 9 pos.08 - 8 pos.07 - 7 pos.06 - 6 pos.05 - 5 pos.04 - 4 pos.03 - 3 pos.02 - 2 pos.