Snap-action switch is reliable, low cost

The SM3 series snap-action switch offers electrical life of 100,000 cycles, typically, and a choice of SPST or SPDT circuits. Electrical rating is 5 A at 125 Vac, contact resistance is less than 20 mΩ, initially, and dielectric strength is 1,000 Vrms, minimum.

The switch's operating and release forces, without lever, can be specified at 80, 130, or 350 gF. Five termination types are available with five lever types. Operating temperature is –40° to 120°C. Pricing is from $0.24 each in quantity.