Snap Switches Indicate Contact Position on Circuit Breakers


TF Series miniature snap action switches indicate whether the circuit breaker is connected, tripped by a fault condition, or under test. Featuring a 400,000 life cycle at 10 amps and an operating force range of 15 to 400 g, the switches can be implemented in HVAC, automotive, pump and level control systems, portable power tools and 3D printers.


  • Operating forces: 15 – 400g
  • High electrical rating: 10A
  • Five actuator options (pin plungers, levers, lever rollers, simulated rollers, and simulated levers)
  • Six termination options (two quick connect, two offset quick connect, screw, and solder)
  • Three circuitry options: single pull double throw (SPDT); single pull single throw, normally closed (SPST NC); and single pull single throw, normally open (SPST NO).
  • 400,000 life cycle at 10A
  • Operating temperature: -40 to 85°C

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