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1SR 20SR 3SR 6SR Switch
Class 1SR (MIL-S-15291) Class 20SR(MIL-S-15291/11/12/13) Class 3SR (MIL-S-15291/5/6/7) Class 6SR (MIL-S-15291/8/9/10)
Mechanical Specifications
Poles 1-12 1-8 1-12 1-8
Positions 2-4 2-4 2-4 2-4
Detent angle
Electrical ratings
Continuous rating 10A-125V 200A-500V/200A-500V 30A-500V 60A-500V
Interrupting current125VAC Resistive (inductive)250VAC Resistive (inductive)500VAC Resistive (inductive)120VDC Resistive (inductive)250VDC Resistive (inductive)350VDC Resistive (inductive) 10A (.75 pf)10A (.75 pf)5A (.75 pf)10A (.24 hy)5A (.24 hy)2A (.24 hy) 200A (.75pf)200A (.75pf)200A (.75pf)200A (reduced Life-see MIL-S-15291)200A (reduced Life-see MIL-S-15291)N/A 30A (.75 pf)30A (.75 pf)30A (.75 pf)30A (reduced Life)15A (reduced Life)N/A 60A (.75 pf)60A (.75 pf)60A (.75 pf)60A (reduced life)30A (reduced life)N/A
Max. breaking ability
Max. making ability
Momentary current
Overload current125VDC500VAC (50 Operations) 60AN/A N/AN/A N/A180A N/AN/A
Dielectric strength 1250Vrms 2000Vrms 2000Vrms 2000Vrms
Insulation resistance 200 megohms 200 megohms 200 megohms 200 megohms
Contact resistance 20 milliohms 1.5 milliohms 10 miliohms 5 milliohms
Horsepower Ratings
Switch mountings4-hole Yes Yes Yes Yes
Locking features
Optional features
Display Output
Display Range (Indication)
Meter Power Supply (Aux)
Output Options
Voltage to Measure (Input)