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Seven reasons to choose safety interlocks for MV and LV switchgear systems
25 Sep 2014

The risks surrounding the operation of electrical switchgear systems are defined in detail and mitigating these is an important aspect of any health and safety policy. As set out by regulatory bodies like the HSE, in publications such as Electrical Switchgear Safety (INDG373), there are a number of important factors to consider. These are well […]
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Castell Safety - Trapped Key Safety Interlocks, Lockout Tagout Equipment and Drive-away Prevention
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Castell Safety - Trapped Key Safety Interlocks, Lockout Tagout Equipment and Drive-away PreventionCastellProducts

Products - Time Delay and Motion Sensing Units - TDR [Electronic Timer with Electrical Isolation]
TDR The TDR-20 is a heavy duty trapped key interlock switch controlled by a fail-safe timer and solenoid.

The unit is designed to control access to hazardous machines with run down times and can be used in high risk category 4 applications.

The unit incorporates: a dual channel fail-safe timer; heavy duty continously rated solenoid; solenoid position monitoring; 20A electrical switch; front panel lamp indication of solenoid position and timer failure and up to four lock centres for multiple access applications.
TDR
Data Sheet
Technical Sheet
Install Sheet
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