Motor protection circuit breaker — SIRIUS 3RV1011-1FA10-ZW98
The Siemens 3RV1011-1FA10-ZW98 is a SIRIUS motor protection circuit breaker designed for motor protection, with Class 10 trip characteristic and phase failure detection. It provides a 100 kA breaking capacity at 400 V, meaning it can safely interrupt fault currents up to that level without cascading upstream — critical for panel selectivity in high-fault installations.
Key ratings and what they mean for fit
Trip Class 10 means the breaker opens within 10 seconds at 7.2× the thermal setting, matching the startup curve of standard induction motors — suitable for pumps, fans, and compressors where the inrush doesn't exceed that window. The phase failure detection is a hard requirement for three-phase motor circuits: if one phase drops, the breaker trips, preventing single-phasing damage. The 100 kA SCCR at 400 V and 240 V is the interrupting rating; at 690 V it drops to 2 kA, so verify your fault-current study at the service voltage.
Mounting and integration
Mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, in any position. The 45 mm width matches the standard SIRIUS 3RV1 compact frame — one unit per 45 mm slot on the rail. Screw-type terminals for the main circuit accept 2×(0.5–1.5 mm²) or 2×(0.75–2.5 mm²) solid or stranded. Clearance: 20 mm above and below, 9 mm to the side.