In a circuit I'm designing I want the user to be able to switch the power off and on (with an SPST style switch), as well as depress a push-button (push-to-break) that will temporarily disable the power - effectively a reset button. Ideally I would like to combine these actions into the same physical switch. Does anyone know if such switches exist? What would I search for to find them?

Edit: I would like to combine SW1 and SW2 in the below circuit.


simulate this circuit – Schematic created using CircuitLab

  • \$\begingroup\$ You mean like a GFCI circuit breaker with its test button? \$\endgroup\$ – Ignacio Vazquez-Abrams Jun 7 '13 at 2:39
  • \$\begingroup\$ Yeah, I guess something mechanically similar to that, however the push button should have the inverse effect (push to break, not push to make). \$\endgroup\$ – aaronsnoswell Jun 7 '13 at 2:41

If I understand correctly, the NKK M2027 (On-On-(On) SP3T) should do what you want. Just connect the circuit to terminals 2 and 4.

  • \$\begingroup\$ Great! Exactly what I needed to know - I wasn't aware that (On) indicated a momentary connection. Thanks. \$\endgroup\$ – aaronsnoswell Jun 8 '13 at 6:20

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