Detent Action Rotary Switches

Small Switches, Big Switches, Special Switches.  Meeting customer needs is our specialty.  Tell us what you need, or explain your application to us. Our Application engineers will solve your problem precisely by modifying one of our standard models or creating something entirely new.  You don't have to settle for almost right, we'll get it exactly right for you!

Series 21 Series 24 Ammeter switch Series 25 Series 28 Series 31B Series 31 Single-Hole mount W2
Series 21 Rotary Switch Series 24 Series 25 rotary switch Series 28 rotary switch Series 31 Control Switch Series 31A Control switch Type W-2
Mechanical Specifications
Sections 1-30 1-15 1-25 1-15 1-10 1-10 1-8
Poles 1-60 1-30 1-75 1-30 1-20 1-20 1-48
Positions 2-8 2-8 2-12 2-16 2-8 2-8 2-12
Detent angle 45° 45° 30° 22.5° 45° 45° 30°
Electrical ratings
Continuous rating 15A-600V 30A-600V 10A-600V 5A-600V 15A-600V 15A-600V 20A-600V
Interrupting current120VAC240VAC24VDC600VAC125VDC250VDC 15A7.5A10A4A2AN/A 20A15AN/A6A3A1A 10A5A7.5A3AN/AN/A 5A3AN/A2AN/AN/A 10A5AN/A3A1AN/A 10A5AN/A3A1AN/A 30 (110VAC) 20A N/A8A 5A 1.65A
Max. breaking ability 30A 75A 15A
Max. making ability 30A 95A 75A 15A 45A 45A
Momentary current30 seconds60 seconds3 seconds 35A35A140A 75A60A200A 30A25A75A N/AN/AN/A 35A25A90A 35A25A90A N/AN/AN/A
Overload current120VAC240VAC600VAC24VDC125VDC 30AN/AN/AN/AN/A 95A65A35AN/AN/A 75A20AN/AN/AN/A 15AN/AN/AN/AN/A 60A45A20A30A15A 60A45A20A30A15A N/AN/AN/AN/AN/A
Dielectric strength 2200Vrms 2200Vrms 2200Vrms 2200Vrms 2200Vrms 2200Vrms 2200Vrms
Insulation resistance 100 megaohms 100 megaohms 100 megaohms 100 megaohms 100 megaohms 100 megaohms
Contact resistance 10 miliohms 10 miliohms 10 miliohms 10 miliohms 10 miliohms 10 miliohms 10 miliohms
Horsepower Ratings
Switch mountingsSingle Hole2-Hole3-Hole4-holeWaterproof Mount N/AN/AN/AYesYes N/AN/AYesN/AYes N/AN/AN/AYesYes N/AN/AN/AYesYes YesN/AN/AYesYes YesN/AN/AN/AYes N/AYesN/AN/AN/A
Locking featuresKey Lock HandleSolenoid LockKey OperatedPull-To-LockKey-InterlockPull-To-TurnPull-To-Disable N/AYesN/AN/AN/AYesN/A YesN/AN/AYesYesN/AN/A N/AYesN/AN/AN/AYesN/A YesN/AN/AN/AN/AN/AN/A N/AN/AYesN/AN/AN/AN/A N/AN/AYesN/AN/AN/AN/A N/AN/AN/AYesYesYesYes
Optional featuresSolenoid OperatedGanged Gear OperatedSpring Return N/AYesYes N/AYesYes N/AYesYes YesN/AYes N/AN/AYes N/AN/AYes N/AN/AYes
ApprovalsUL RecognizedCSA CertifiedCE YesYesN/A YesYesYes YesYesN/A YesYesN/A YesN/AN/A YesN/AN/A YesN/AN/A
Display Output
Display Range (Indication)
Meter Power Supply (Aux)
Output Options
Voltage to Measure (Input)