Motor protection circuit breaker for the panel builder
The Siemens 3RV1011-0HA10 is a SIRIUS motor protection circuit breaker designed for motor protection, with Trip Class 10 and phase failure detection built in. Its 100 kA breaking capacity at 400 V AC means it can safely interrupt fault currents up to that level without upstream fuses needing to clear first — a real advantage in high-fault panels where selectivity matters. The 45 mm width and screw-and-snap-on mounting onto 35 mm DIN rail per DIN EN 60715 make it a direct fit in standard distribution boards and motor control centers.
What the ratings mean for your BOM line
Trip Class 10 means the breaker will trip within 10 seconds at 7.2× the thermal setting — fast enough to protect standard induction motors during a locked-rotor event, without nuisance tripping on normal starting inrush. Phase failure detection is included, so a lost phase on the line side will cause the breaker to open rather than letting the motor single-phase and overheat. The 100 kA breaking capacity holds at 240 V, 400 V, 500 V, and 690 V AC — the same rating across the voltage range, so coordination studies stay simple. At 500 V and 690 V, the manufacturer calls for a gL/gG 6 A backup fuse upstream — that is the only condition where an external fuse is required; at 240 V and 400 V none is needed.
Panel integration details
Mounts in any position via screw and snap-on onto 35 mm DIN rail per DIN EN 60715 — no adapter plate needed. Clearance requirements: 20 mm upwards and downwards, 9 mm to the side, 0 mm forwards and backwards — tight enough for dense panel layouts. Main circuit terminals accept 2× (0.5 to 1.5 mm²) or 2× (0.75 to 2.5 mm²) solid or stranded wire, M3 screw terminals. Rated for operation from -20 to +60 °C, storage and transport from -50 to +80 °C — covers most indoor panel environments without derating.