Trip unit and method for producing one such trip device
The trip unit ( 10 ) according to the invention is capable of being connected to a circuit breaker and includes a first block ( 12 ) and a second block ( 14 ). The first block ( 12 ) comprises a first case ( 16 ) and a circuit breaker trip member ( 20 ) accessible from outside the first case ( 16 ). The second block ( 14 ) comprises a second case ( 26 ) and at least one member ( 28 ) for detecting an electric fault. The first block ( 12 ) and the second block ( 14 ) are two distinct blocks relative to one another and the first case ( 16 ) and the second case ( 26 ) are capable of being mechanically assembled to one another in an assembled configuration of the trip unit ( 10 ). Each contact end ( 62 ) is capable of mechanically cooperating with the trip member ( 20 ), when the corresponding detecting member ( 28 ) detects an electric fault.
1. A trip unit that connects to a circuit breaker, said trip unit comprising:
a first block comprising
a first case including two walls, each wall comprising a through orifice for receiving a shaft, and
a trip member of the circuit breaker mechanically connected to the shaft and accessible from outside the first case; and
a 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, that is movable toward the trip member when the respective detecting member detects an electric fault,
wherein the first block and the second block are two distinct blocks relative to one another,
wherein the first case and the second case are mechanically assembled to one another in an assembled configuration of the trip unit, and
wherein each contact end mechanically cooperates with the trip member such that the trip member trips the circuit breaker in the assembled configuration of the trip unit when the corresponding detecting member detects an electric fault.
2. The trip unit according to claim 1 , wherein the second case comprises two side walls obstructing the through orifices in the assembled configuration of the trip unit, the shaft then not being accessible from outside the trip unit via said through orifices.
3. The trip unit according to claim 1 , wherein the trip unit comprises at least one adjusting device adjusting a distance between the trip member and the corresponding contact end, measured parallel to the movement of the contact end when an electric fault is detected in the assembled configuration of the trip unit.
4. The trip unit according to claim 3 , wherein for each corresponding moving element, the adjusting device comprises an adjusting member that mechanically cooperates with the trip member and is moveable toward or away from the corresponding contact end in the assembled configuration of the trip unit.
5. The trip unit according to claim 3 , wherein the adjusting device comprises a first adjusting member moving each contact end toward or away from the trip member, parallel to the movement of the contact end when an electric fault is detected in the assembled configuration of the trip unit, and wherein the first adjusting member is accessible from an outer face of the first case.
6. The trip unit according to claim 5 , wherein the adjusting device comprises a second adjusting member, for each corresponding moving element, moving the corresponding contact end toward or away from the trip member, parallel to the movement of the contact end when an electric fault is detected in the assembled configuration of the trip unit.
7. The trip unit according to claim 1 , wherein the first case comprises a first hole, wherein the second case comprises a second hole, and wherein in the assembled configuration of the trip unit, the first and second holes are aligned and receive a fastening member for fastening the first case to the second case.