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\$ Jun 7, 2013 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\$ Jun 7, 2013 at 2:41

1 Answer 1


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\$ Jun 8, 2013 at 6:20

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.