Track circuit interrupter
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![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/46/Track_circuit_interrupter.jpg/250px-Track_circuit_interrupter.jpg)
A track circuit interrupter may be fitted at catch points, trap points or buffer stops to maintain a track circuit in the 'occupied' state in the event of a derailment. The track circuit remains de-energised until the interrupter is replaced.
GK/RT0011 specifies the requirements for the provision of track circuit interrupters. [1]
![](http://upload.wikimedia.org/wikipedia/commons/7/7a/Track_Circuit_Interrupter_-_Diagram_B.jpg)