SIRIUS circuit breaker for starter combinations
Mounting is via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, and the part accepts conductor cross-sections up to 70 mm² on the main circuit, with solid or stranded wire from 2.5 mm² up to 50 mm² in dual feed.
Environmental and clearance notes
The part has no ground-fault detection and no phase-failure detection — it is a straightforward thermal-magnetic or electronic overload relay, not a multifunction protection device. Dimensions are 176 mm deep, 70 mm wide, and 165 mm high, fitting standard 70 mm-wide DIN-rail slots. Clearance requirements: 150 mm above and below for air circulation and arc quenching, 30 mm to the sides, and zero clearance forward or backward — so it can be butted against a backplane or enclosure wall without derating.