A battery module for a control unit of an electrical circuit breaker, the battery module being configured to be inserted into an associated battery housing of the control unit, the housing opening onto a front face of the control unit and presenting an elongated shape along a depth axis orthogonal to the front face, the control unit comprising two electrical contact pads arranged in a bottom of the housing, wherein:
- the battery module comprises:
- an envelope, which includes a proximal wall, which is generally orthogonal to a main axis, and a peripheral wall, which extends in projection from the proximal wall and which presents a continuous contour around the main axis, the proximal wall and the peripheral wall together delimiting a cavity of the envelope, the cavity being configured to receive a battery presenting two electric poles, the cavity opening from the envelope through a distal opening, which is located opposite the proximal wall according to the main axis,
- a cover, which is movable relative to the envelope between an open position and a closed position, in which the cover at least partially closes the cavity, the cover in the closed position being configured to hold the battery in the cavity, the battery module being then in a closed configuration,
- two conductive elements, each comprising an input tab, which is configured to be connected to a respective pole of the battery, and an output tab, which is configured to be connected to a respective electrical contact pad of the control unit when the battery module is in a closed configuration and is received in the corresponding housing, in an assembled configuration of the battery module to the control unit,
- the proximal wall and the peripheral wall together form a continuous portion of the envelope, the continuous portion extending to a minimum distance from the proximal wall, the minimum distance being measured according to the main axis and being greater than or equal to 14 mm.