Audio Switch Series A
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
Resistors are not included
Standard Product Variety
Number of channels (wafers)
IP60 or IP68
Configurable end stops
Shaft diameter; 6 mm or
¼"
Typical Applications
High end volume control
Possible Customization
Shaft dimensions and shape
Bushing dimensions
Switching torque
Wafer spacer dimensions
Others
Preference Types Selection Chart
1
Switching Mode
Shorting
Resistor Value
Any
1-Channel Version
04A1A00
2-Channel Version
04A2A00
Drawings
2-Channel Version (2 Wafers)
M10 x 0,75
M10 x 0,75
2,5
2,5
ø1
,6
ø1
,6
Front panel cut out
2,7
ø10,2
2,7
ø10,2
26
26
Circuit diagram
Circuit diagram
C
R1
R2
R24
A
ø6
ø6
7,5
7,5
1
9,5
1,5
20
1
9,5
17
25 43
1,5
1,6
6
20
43
17
1 C
B A
1 C
B A
B
1,6
6
ø40
ø40
25
1
For other types/options, see type key.
81
Rotary Switches
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Audio Switch Series N
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, 100k
IP60 or IP68
Configurable end stops
Shaft diameter; 6 mm or
¼"
Typical Applications
High end volume control
Possible Customization
Shaft dimensions and shape
Bushing dimensions
Switching torque
Wafer spacer dimensions
Others
Preference Types Selection Chart
1
Switching Mode
Shorting
Resistor Value
10 kOhms
50 kOhms
100 kOhms
1-Channel Version
04A1N01
04A1N05
04A1N10
2-Channel Version
04A2N01
04A2N05
04A2N10
Drawings
2-Channel Version (2 Wafers)
ø32
ø32
M10 x 0,75
M10 x 0,75
2,5
2,5
ø1ø1
,6 ,6
Front
panel cut out
Front panel cut out
Front
panel cut out
2,7
2,7
ø10,2
ø10,2
3
Circuit
diagram
Circuit
diagram
R1
R2
R23
1
ø6
ø6
26
26
20
20
7,5
7,5
2
11
9,5
9,5
1,5
1,5
18,5
18,5
0,64
0,64
17,5
17,5
46
46
123 3
12
2,54
2,54
1010
2,54
2,54
25
25
1
For other types/options, see type key.
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4
4
Rotary Switches
82
Audio Switch Series R
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
Resistors are not included
Standard Product Variety
Number of channels (wafers)
IP60 or IP68
Configurable end stops
Shaft diameter; 6 mm or
¼"
Typical Applications
High end volume control
Possible Customization
Shaft dimensions and shape
Bushing dimensions
Switching torque
Wafer spacer dimensions
Others
Preference Types Selection Chart
1
Switching Mode
Shorting
Resistor Value
Any
1-Channel Version
04A1R00
2-Channel Version
04A2R00
Drawings
2-Channel Version (4 Wafers)
M10 x 0,75
M10 x 0,75
2,5
2,5
ø1
,6
ø1
,6
Front
Front panel cut out
panel cut out
2,7
ø10 ,2
Front panel cut out
2,7
Circuit diagram
Circuit diagram
IN
ø6
26
ø6
26
7,5
ø10 ,2
1
9,5
1,5
9,5
25
20
17,3
78
17 ,3
2
17,3
G
IN/OUT
6
ø43
G
1
For other types/options, see type key.
83
Rotary Switches
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R24b
R1b
R2b
1
25
1,5
20
17,3
78
17 ,3
2
17,3
1
7,5
R24a
R1a
R2a
OUT
G
IN/OUT
6
ø43
1
Audio Switches General
Specifications
Mechanical Data
Resolution: ........................................................................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 Data
Function: ...........................................................................1 x 24 poles/positions per wafer
(max. 12 wafers; series A/N: 12 channels, series R: 6 channels)
Switching mode: ................................................................Shorting
Load current: .....................................................................2 A max. (resistive load)
Switching voltage: ..............................................................42 VDC max.
Contact resistance (new condition): .....................................100 mOhms max.
Insulation resistance: ..........................................................10
12
Ohms min. (contact to contact/housing)
Switching capacitance: .......................................................1 pF max. (contact to contact)
Dielectric withstanding voltage:...........................................500 VDC during 60 seconds
Material Data
Shaft: ................................................................................Stainless steel
Bushing/housing: ...............................................................Zinc diecast, zinc plated and passivated
Nut: ..................................................................................Brass, zinc plated and passivated
Contact plating: .................................................................AuCo (hard gold); 3 µm
Insulation material: ............................................................PCB: FR4 (glass fiber epoxy), rotor: Polybutylene (PBTB)
Soldering leads:.................................................................Alloy copper, AuCo plated (hard gold)
Environmental Data
Operating temperature range:............................................-40 to +85°C
IP sealing: .........................................................................IP60, optional IP68 (2 bar, 1 hour) shaft/front panel sealing
Vibration: ..........................................................................10 G
rms
max. @ 10 to 2000 Hz
Flammability:.....................................................................UL94-HB
Packaging Sizes
Tray: .................................................................................10 pcs.
Soldering Conditions
Hand soldering:.................................................................300°C max. during 3 s max.
Wave soldering: .................................................................280°C max. peak temperature during 5 s max.
Spacers
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
3.5 mm
3.5 mm
5.5 mm
5.5 mm
Packaging Unit
10 pcs.
100 pcs.
10 pcs.
100 pcs.
Order Number
4124-31
4124-30
4124-36
4124-35
Special Wafer Spacing
Our spacers allow the following wafer spacing:
L = 21.3 mm or 25.5 mm
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Rotary Switches
84
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