Isolates power
November 1st 2003

Two new modular mechanical bolt interlocks from Fortress Interlocks bolt module (BM) and a stainless steel version (BMS) are designed to interface with devices such as power breakers, valves, and earth switches, indirectly interlocking power sources. Part of the m-Gard range of trapped key interlocks, the devices ensure all energy sources are reduced to zero before access to potentially hazardous machinery is made. Single or multiple access locks are available. For a single module, BM1, with the key free the bolt is usually in the extended position. To retract the bolt, the key must be inserted and trapped. Operation of the key extends or withdraws the bolt which, in turn, may be used to interface with mechanical linkages, such as levers or cams on proprietary switchgear.

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