Motor Protection Circuit Breaker — SIRIUS 3RV2011-0EA20
It carries a Trip Class 10 characteristic, meaning it will trip within 10 seconds at 7.2× rated current — the standard for standard-duty motor starts where the acceleration time stays under a few seconds. Rated breaking capacity reaches 100 kA at 400 V AC and 690 V AC, so it safely interrupts fault currents up to that level without cascading upstream. This SCCR headroom suits installations fed from transformers or distribution panels with high available fault current. Ground fault detection is not included, so downstream protection (GFCI or residual-current device) must be added if required.
The 45 mm width and 97 mm depth fit standard enclosure layouts — plan for 50 mm clearance above and below for wiring and heat dissipation. Any mounting position is permitted, which simplifies panel layout in tight cabinets. Spring-loaded terminals on the main current circuit accept 2× (0.5 to 4 mm²) solid or stranded wire. Use a 3 mm diameter screwdriver shaft for the terminal screws — the tip size is 3.0 × 0.5 mm.