The NVR action ensures that if you have a power supply failure the equipment will not start again, 

(once power is back) until the start button is pressed again.

Ideal for power switching on electric motors, a good idea for many workshop machines

Switch Rated at 16amps 220-240volt (18 (16)A 250v)

Switch Rated at 2HP 220-240volt

2 no. NC Emergency Button Contact block