Trip unit and method for producing one such trip device

A method for manufacturing a trip unit capable of being connected to a circuit breaker, said trip unit comprising a first block and a second block, the first block comprising:

• a first case including two walls, each wall comprising a through orifice for receiving a shaft,
• a trip member of the circuit breaker mechanically connected to the shaft and accessible from outside the first case,
• the second block comprising a second case and at least one detecting member for detecting an electric fault, each detecting member being positioned inside the second case and including at least one moving element comprising a contact end, capable of being moved toward the trip member, when it detects an electric fault,
• wherein the method comprises the following steps:
• a) mounting an assembly formed by the shaft and the trip member in the first case,
• b) mounting the detecting member in the second case,
• c) assembling the first case and the second case, the contact end being capable of cooperating mechanically with the trip member, such that the trip member is capable of tripping the circuit breaker, in the assembled configuration of the trip unit when the corresponding detecting member detects an electric fault.