What this SIRIUS 3RV1011-0EA20-ZW97 brings to a motor branch
The Siemens SIRIUS 3RV1011-0EA20-ZW97 is a 3-pole motor protection circuit breaker rated for 0.4 A continuous current with a 100 kA breaking capacity at 400 V AC — that holds across 240 V, 500 V, and 690 V as well, so it handles high-fault utilities without derating the interrupting rating. It uses spring-loaded terminals on both the main and auxiliary/control circuits, accepting 2x (0.25... 2.5 mm²) solid or 2x (0.25... 1.5 mm²) finely stranded with ferrules. The CLASS 10 trip curve means it clears an overload before a standard motor's rotor locks, protecting winding insulation during a stall. Phase failure detection is built in — if one line drops, the breaker trips faster than a three-pole thermal alone would, which matters for motor loads that overheat on single-phasing. The front face carries IP20 touch protection (finger-safe), so it's safe for open-panel mounting where operators might reach in.
Snap-on DIN rail, any orientation, 45 mm wide
Mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 50022, and the mounting position is any — vertical, horizontal, even upside-down — with no derating needed. The 45 mm width (3-module) and 81 mm depth leave room for adjacent contactors or overload relays in a motor starter stack. Shock rated to 25g / 11 ms, so it survives cabinet transit and moderate vibration on a machine frame.
Key ratings at a glance
Rated continuous current: 0.4 A. Breaking capacity: 100 kA at 240 V, 400 V, 500 V, and 690 V AC. Motor power at 400 V: 0.09 kW. Trip class: CLASS 10. Max switching frequency: 15 operations per hour. Surge voltage withstand: 6 kV. Power dissipation at rated current: 5.5 W total, 1.8 W per pole. Operating temperature: -20 to +60 °C; storage/transport: -50 to +80 °C.