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 Typical Applications Number of channels (wafers) IP60 or IP68 Configurable end stops Shaft diameter; 6 mm or 1/4" High end volume control Possible Customization Shaft dimensions and shape Bushing dimensions Switching torque Wafer spacer dimensions Others Preference Types Selection Chart1 Switching Mode Resistor Value 1-Channel Version 2-Channel Version Shorting Any 04A1A00 04A2A00 Drawings 2-Channel Version (2 Wafers) o1 M10 x 0,75 2,5 o1 ,6 ,6 7,5 1 1,5 1 9,5 20 25 1 81 1 C 1,5 1,6 9,5 17 206 25 43 17 B A o40 1,6 1 C B A o40 6 43 For other types/options, see type key. Rotary Switches 2,7 2,7 o10,2 o10,2 26 26 Front panel cut out o6 o6 M10 x 0,75 2,5 www.elma.com Circuit diagram Circuit diagram R1 C 7,5 B R2 R24 A 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 Typical Applications Number of channels (wafers) Resistor value: 10k, 50k, 100k IP60 or IP68 Configurable end stops Shaft diameter; 6 mm or 1/4" High end volume control Possible Customization Shaft dimensions and shape Bushing dimensions Switching torque Wafer spacer dimensions Others Preference Types Selection Chart1 Switching Mode Shorting Resistor Value 1-Channel Version 2-Channel Version 10 kOhms 04A1N01 04A2N01 50 kOhms 04A1N05 04A2N05 100 kOhms 04A1N10 04A2N10 Drawings 2-Channel Version (2 Wafers) o1o1 ,6 ,6 20 20 2,7 2,7 o10,2 o10,2 Front panel cut out Front Frontpanel panel cut cut out out 26 26 o6 o6 M10 x 0,75 M10 x 0,75 o32 o32 2,52,5 Circuit diagram Circuit diagram R1 3 R2 R23 1 7,57,5 4 4 2 11 18,5 18,5 2525 1 1 21 32 3 1,51,5 9,59,5 0,64 0,64 17,5 17,5 4646 2,54 2,54 2,54 2,54 1010 For other types/options, see type key. www.elma.com 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 Typical Applications Number of channels (wafers) IP60 or IP68 Configurable end stops Shaft diameter; 6 mm or 1/4" High end volume control Possible Customization Shaft dimensions and shape Bushing dimensions Switching torque Wafer spacer dimensions Others Preference Types Selection Chart1 Switching Mode Resistor Value 1-Channel Version 2-Channel Version Shorting Any 04A1R00 04A2R00 Drawings 9,5 25 1 83 1,5 20 20 17,3 17,3 78 78 17 ,3 17 ,3 6 2 17,3 G 2,7 IN/OUT o43 1 6 G IN/OUT o43 For other types/options, see type key. Rotary Switches 7,5 R24a 25 1 R24b 1 2 17,3 IN R2a 9,5 7,5 Circuit diagram Circuit diagram R1a 26 o6 1,5 1 2,7 Front panel cut out 26 o6 Front Front panel cut out panel cut out R2b ,6 ,6 R1b o1 o1 o10 ,2 2,5 o10 ,2 2,5 M10 x 0,75 M10 x 0,75 2-Channel Version (4 Wafers) www.elma.com G OUT 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:...........................................................1012 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 m 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 +85C IP sealing:..........................................................................IP60, optional IP68 (2 bar, 1 hour) shaft/front panel sealing Vibration:...........................................................................10 Grms max. @ 10 to 2000 Hz Flammability:.....................................................................UL94-HB Packaging Sizes Tray:..................................................................................10 pcs. Soldering Conditions Hand soldering:..................................................................300C max. during 3 s max. Wave soldering:..................................................................280C 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 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 www.elma.com Rotary Switches 84 Audio Switches General Type Key 0 4 A X X X X - X X X X X X X X Number of Channels Shaft Diameter 0 - 6 mm Z - 1/4" Series A - Series A N - Series N R - Series R Factory Set End Stop 00 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 Resistor Value (N Series Only) 00 01 05 10 - Without resistors 10 kOhms 50 kOhms 100 kOhms IP Sealing 00 - IP60 30 - IP68 - 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. pos. Shaft Length (AL) 000 - 25 mm xxx - Custom1 (e.g. 18.5mm = 185) 1 Customized Shaft Length Please state shaft length (AL) measured from mounting face (max. AL = 50 mm). 85 Rotary Switches www.elma.com