Siemens 3RV2311-1KC10 – SIRIUS Circuit Breaker for Starter Combinations
Width is 45 mm, depth 97 mm, height 97 mm — fits standard panel cutouts and leaves clearance: 50 mm above and below, 30 mm to the side, zero forward or backward. Main circuit terminals are screw-type, accepting 2x (0.75–2.5 mm²) solid/stranded or 2x 4 mm².
Coordination and Ratings
For fuse backup coordination, the maximum permitted upstream fuse rating is gL/gG 63 A at 400 V, 50 A at 500 V, and 40 A at 690 V — useful when designing selective coordination with a downstream motor branch. Rated operational voltage spans 20 to 690 V, covering most low-voltage industrial supplies. Maximum switching frequency under AC-3 duty is 15 operations per hour — a reminder this is a protection device, not a contactor for frequent cycling.