It is part of the SIRIUS family, a modular system for control panels. That is a standard requirement for motor protection in most industrial codes.
The 45 mm width (3-module) fits standard enclosure cutouts. Any mounting position is allowed, which simplifies panel layout. Clearance: 50 mm above and below, 30 mm to the side, 0 mm forward and backward — so it can sit flush against a backplate. Main contact terminals are M4 screw-type, accepting 2×(1…2.5 mm²) or 2×(2.5…10 mm²) solid or stranded wire. That covers most motor feeder cables up to 10 mm².
Key Ratings and So-What
That means the upstream fuse can be sized up to 63 A gL/gG and still provide backup protection — useful when coordinating with a larger feeder breaker. Maximum switching rate is 15 operations per hour at AC-3 (motor starting) duty. That is typical for a motor-protective device — adequate for most pump, fan, and conveyor cycles, but not for high-repetition jogging or rapid reversing.