Trapped key interlocking is a tried and tested method of mechanically safeguarding dangerous machines and hazardous processes. Mechanical keys eliminate most of the electrical wiring associated with other types of interlocks making it cost effective to install and maintain.


Safety rating: SIL 3 Category 4 PL e

Housing material: Die-cast zinc for XM models, stainless steel for XMS


ISO 14119

ISO 19837:2018