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Catalog - 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
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