The Siemens SIRIUS 3RV2011-1JA20-ZW97 is a motor-protective circuit breaker designed for Class 10 trip characteristics, meaning it will trip within 10 seconds at 7.2× the thermal setting — standard for protecting standard induction motors during startup. It carries phase failure detection so a lost phase won't cook the winding while the motor tries to start single-phased. Rated short-circuit breaking capacity hits 100 kA at both 230 V and 400 V, dropping to 42 kA at 500 V and 4 kA at 690 V. That 100 kA at 400 V means it handles high-fault-current panels without needing an upstream current-limiting fuse in most common industrial distributions. Mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715 in any position. The 45 mm width is the standard SIRIUS 3RV2 footprint — drops into a panel already laid out for the family without re-spacing.
Termination & Wiring
Main current circuit uses spring-loaded terminals, accepting 2×(0.5…4 mm²) solid or stranded. That spring-cage design speeds panel wiring vs screw clamps — no torque driver needed, just strip to 8-10 mm and push. Ambient operating range is -20 to +60 °C; storage and transport from -50 to +80 °C.