This switch should be used to cut the current flow of the machine when the speed limiter is interlocked or by tensioning the tension pulley.
The supply voltage will be 250 Volts for alternating current and a current of 0.5 Amperes will circulate at most.
The contact is a normally closed contact, NC, so it must be properly wired to the control panel so that when the switch is pressed (plunger-type actuator), the contact opens and the machine must stop.