Breaker panel

A breaker panel comprising:

• a removable front cover comprising apertures;
• and
• a plurality of circuit breakers, each circuit breaker comprising, at one end, a foot, and at the opposite end, a head received into the interior of a respective aperture of the front cover, this head comprising:
• a frustoconical portion that flares in the direction of the foot, from a top to its base;
• and
• a shoulder, perpendicular to a plug-in direction, located level with the base of the frustoconical portion,
• the frustoconical portion comprising in immediate succession when traced from its base to its top:
• a frustroconical seal made of an elastomer, this frustroconical seal having a first frustroconical face exposed directly to the exterior and extending from a lower edge to an upper edge;
• and
• a conic frustum made of a material that is harder than the material of the frustroconical seal, this conic frustum having a second frustroconical face directly exposed to the exterior and extending from a lower edge to an upper edge contained in the top of the frustroconical portion;
• wherein:
• the distance, in the plug-in direction, between the upper edge of the first frustroconical face and the shoulder is at least two times smaller than the distance, in the plug-in direction, between the upper and lower edges of the second frustroconical face;
• and
• the upper edge of the first frustroconical face is set back, towards the interior of the circuit breaker, relative to the lower edge of the second frustroconical face.