The front mounted instantaneous auxiliary contact block provides auxiliary contacts on the front face of GV2 and GV3 motor circuit breakers. This range consists of auxiliary contact blocks for connection by screw clamp. Three references are included in the range depending on the type of contacts needed. The side mounted instantaneous auxiliary contact block provides auxiliary contacts on the side of GV2 and GV3 motor circuit breakers. This range consists of auxiliary contact blocks and fault signalling contacts + auxiliary contact blocks for connection by screw clamp. The voltage trip auxiliary on GV2 and GV3 motor circuit breakers trips the circuit-breaker when the control voltage drops below the tripping threshold. The product compatibility are LP1K and LC1K and the range compatibility is TeSys K and TeSys GV2.