Machine Design

Emergency Cable-Pull

The IP65-rated ZS71-NA emergency cable-pull switch with integral E-stop pushbutton features a double-pole contact block with a choice of one positive-opening N.C. contact and one N.O. contact or two positive-opening N.C. contacts.

The metal-housed unit is capable of spanning lengths of up to 20 m. Power is interrupted when pulled or if the cable breaks. Additional features include pushbutton reset, two cable entries, optional signaling lamp, external watertight collar, and screw terminals. It is rated to handle current up to 6 A. Targeted applications are conveyor lines, textile machinery, packaging, transfer lines, and applications requiring a continuous, immediately available accessible emergency stop.

Schmersal Inc., 660 White Plains Rd., Suite 160, Tarrytown, NY 10591, (914) 347-4775,

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