Motor protection circuit breaker — SIRIUS 3RV1011-1CA10-ZW97
The Siemens SIRIUS 3RV1011-1CA10-ZW97 is a motor protection circuit breaker designed for the main current circuit of three-phase induction motors. Per the datasheet, it carries Trip Class 10, meaning it will trip within 10 seconds at 7.2× the thermal setting — the standard for protecting standard IEC motors against locked-rotor conditions. Rated interrupting capacity reaches 100 kA at 240 V, 400 V, and 500 V, dropping to 2 kA at 690 V. Phase failure detection is built in; ground fault detection is not. Mounting is via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, with any mounting position allowed.
SCCR and selectivity — what the ratings mean for panel coordination
The 100 kA SCCR at 400 V is the value that governs upstream fuse or breaker selection. At 400 V, the datasheet specifies a gL/gG 35 A backup fuse; at 500 V and 690 V, gL/gG 25 A. At 240 V, no backup fuse is required. These are the coordination limits — exceed them and the interrupting capacity of the device alone is what clears the fault. The 2 kA rating at 690 V is a hard ceiling; if the available fault current at 690 V exceeds that, a current-limiting upstream device is mandatory.
Lifecycle and sourcing posture
The lifecycle stage for this order code is listed as current, meaning the manufacturer continues to produce it as a standard catalog item. No successor has been announced. For procurement, this part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.
Mounting clearances and wiring
Clearance requirements per the datasheet: 20 mm upwards, 20 mm downwards, 9 mm at the side, 0 mm forwards, 0 mm backwards. These are the minimum free air spaces needed for heat dissipation and arc venting — not optional for maintaining the SCCR rating. Main circuit terminals accept 2×(0.5…1.5 mm²) or 2×(0.75…2.5 mm²) solid or stranded, with M3 screw-type terminals.
Environmental limits
Operating temperature range is -20 to +60 °C; storage and transport range is -50 to +80 °C. The rated voltage range is 20…690 V. Maximum switching frequency under AC-3 or AC-3e duty is 15 operations per hour.