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Castell Trapped Key Interlocking Systems

Pneutrol Spares is an authorised supplier of Castell trapped-key interlocks, offering modular components to build bespoke safety sequences. Our range covers safe-area, hazardous-area, and intrinsically safe variants, with keys that can only be removed in a predefined order. Simply configure your sequence using interlock bodies, key exchange units, and position switches to guarantee that access doors, valves, and electrical panels operate only under safe conditions.