Electrical protection device, distribution assembly and associated electrical panel

An electrical protection device comprising:

• a housing which is configured to be mounted, reversibly and by means of a mounting movement, on a distribution device comprising a power bus with at least one phase, the protection device then being in a mounted position in which a rear face of the housing is oriented towards the distribution device,
• a first conducting path comprising:
• a first incoming terminal, which is configured to be connected to the power bus,
• a first outgoing terminal, which is configured to be connected to an electric load, and
• a first movable contact, which is movable with respect to the housing between a conducting position, in which the first movable contact electrically connects the first incoming terminal to the first outgoing terminal, and an isolating position, in which the first incoming terminal and the first outgoing terminal are electrically isolated from one another;
• a switching mechanism, which is accommodated in the housing and which is configured to switch between:
• an armed configuration, in which the switching mechanism places the first movable contact in the conducting position, and
• a tripped configuration, in which the switching mechanism places the first movable contact in the isolating position;
• wherein:
• the switching mechanism comprises a tripping device, which is movable between a neutral position and an excited position, the tripping device being configured to switch the switching mechanism into the tripped configuration when the tripping device is in the excited position;
• the electrical protection device comprises a safety mechanism, which comprises:
• a support portion, which is movable between a retracted position and an advanced position, the support portion being accessible through a slot provided in the housing and being configured to be pushed back into the retracted position by the distribution device when the protection device is mounted on the distribution device by means of the mounting movement,
• a return member, which tends to return the support portion to the advanced position,
• a tripping portion, which is movable between an activating position, in which the tripping portion pushes the tripping device back from the neutral position to the excited position, and a set-back position, in which the tripping portion does not push back the tripping device,
• a transmission device, which connects the support portion to the tripping portion such that when the support portion is in the retracted position, the tripping portion is in the set-back position, the safety mechanism being in a set-back configuration, whereas when the support portion is in the advanced position, the tripping portion is in the activating position, the safety mechanism being in an activating configuration,
• the safety mechanism is in the set-back configuration when the protection device is in the mounted position on the distribution device,
• the safety mechanism is configured such that, during a dismantling movement, opposite to the mounting movement, the safety device passes from the set-back configuration to the activating configuration of the tripping device before the incoming terminal is disconnected from the power bus.