SIRIUS 3RV2011-1FA20-ZX95 — motor protection breaker, CLASS 10, 100 kA SCCR
The Siemens SIRIUS 3RV2011-1FA20-ZX95 is a motor protection circuit breaker designed for the main current circuit, with phase failure detection built in. It carries a CLASS 10 trip curve, meaning it will disconnect within 10 seconds at 7.2× the thermal setting — standard for protecting standard induction motors during a locked-rotor event. The interrupting rating hits 100 kA at 400 V and 500 V, 100 kA at 240 V, and 4 kA at 690 V, so it can handle high-fault utility feeds without cascading upstream. Switching frequency is rated at 15 operations per hour under AC-3 duty, which suits intermittent motor starts — not continuous jogging.
Panel fit and mounting
Mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715. Dimensions are 45 mm wide, 106 mm tall, 97 mm deep — a standard 45 mm module width that leaves room for adjacent contactors or overloads on the rail. Clearance requirements: 50 mm above and below, 30 mm to the side, zero forward or backward. Any mounting position is allowed, so vertical or horizontal rail orientation works.