SAFEGUARD 61122 Air/Hydraulic Bottle Jack, Casted Base, Steel, 12 Ton Capa

A push button switch has an actuator that makes or breaks the circuit contact when its button is depressed. A momentary switch, sometimes called a spring return switch, automatically returns to the rest position. A normally ON switch (also called a normally closed circuit), remains in the ON rest position until pressure is applied to the actuator.... moreSingle pole, single throw (SPST) is a two terminal switch that opens or closes one circuit.