The GV2ME036 is a 3-pole motor circuit breaker from Schneider's TeSys GV2 range, rated for a line current of 0.4 A. It's a thermal-magnetic trip unit — thermal for overload protection, magnetic for short-circuit — and it's designed for motor protection duty in control panels. The 0.4 A rating places it at the low end of the family, meant for very small motors like 0.09 kW at 400 V AC. Its breaking capacity is a solid 100 kA across 230 V to 690 V AC, so it can handle high fault currents without being the weak link in your selective coordination.
It can be installed horizontally or vertically. The connection pitch is 13.5 mm without spreaders, so there's enough room for ring lugs. It's IP20 rated, so finger-safe but not for wet environments.