Abstract: The invention relates to an improved double break contact system for use in moulded case circuit breakers. The system comprises shaft means (8), fixed contact means (1 and 2) and moving contact means (3) mounted on shaft means (8), spring means (4) operatively mounted on the shaft means (8), holder means (5) securing said spring means (4) wherein holder means being rotatably mounted on the shaft means in a manner that rotation of the shaft means in operation rotates said holder means. The spring means is adapted to provide force opposing the electromagnetic.