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Castell provides safety interlocks to Zambia’s largest power station
25 Jul 2014

ZESCO chooses British firm as partner for Kariba North Bank extension project Industrial safety specialist Castell has provided several K Locks and key exchanges boxes to the Kariba hydropower station North Bank extension project in Zambia. Photo caption: Castell’s interlocks, installed in Zambia’s Kariba hydropower station more than 50 years ago, are still performing 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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