Common limit switch styles include enclosed pin plunger switches, side rotary lever switches, and direct opening safety limit switches. Choice of style depends on the specific application.

Limit switches: A mechanical limit switch interlocks a mechanical motion or position with an electrical circuit.

Contacts on this switch can be copper alloy, silver-plated or gold-plated. Silver contacts are rated at 5A at 120 Vac or 28 Vdc or 2A at 250 Vdc. Gold contacts are rated at 0.4 VA at 20V ac or dc.