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Power Limit Switches

Class 6170 Youngstown Power Limit Switches for AC and DC Cranes

By Electric Controller and Manufacturing Company  
This OSHA-required switch limits crane hoist over-travel in the hoisting direction. It is operated by the crane hoist hook block and directly interrupts the hoist motor current. EC&M created the first power limit switches used on cranes to help provide the highest level of crane safety. Youngstowns feature an automatic gravity reset mechanism, sealed bearings, and right- or left-hand operating arms
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