The prevent shuntThe prevent shunt of a Track Circuit is the value of resistance connected across the rails at which the track circuit Relay energises (that is, it just makes it... More of a Track CircuitAn electrical device using the rails in an electric circuit, which detects the absence of trains on a defined section of line. More is the value of resistance connected
across the rails at which the track circuitAn electrical device using the rails in an electric circuit, which detects the absence of trains on a defined section of line. More RelayAn electro-mechanical switching device used in many types of Signalling Systems. More energises (that is, it just
makes its front contacts).