Motor protection breaker for the lube route
The Siemens 3RV2011-0EA10-ZX95 is a SIRIUS motor protection circuit breaker, size S00, designed for motor protection with a Class 10 trip curve. It is rated for a breaking capacity of 100 kA at 400 V AC, meaning it can safely interrupt fault currents up to that level without cascading upstream — critical for maintaining selectivity in a motor control center. It mounts via screw or snap-on onto a 35 mm DIN rail per DIN EN 60715, in any position, and accepts screw-type terminals for the main circuit. The 45 mm width and 97 mm depth fit standard panel layouts, and the 97 mm height leaves room for busbar routing above and below. Out here in the grease, phase failure detection is the difference between a motor that keeps turning and one that cooks. This breaker has it built in — no add-on module needed.
Trip class and breaking capacity — what they mean on the floor
Class 10 trip means the bimetal element opens within 10 seconds at 7.2× the thermal setting. That is fast enough to protect a standard induction motor during a locked-rotor event without nuisance tripping on normal startup inrush. The 100 kA breaking capacity at 400 V AC (and at 240 V, 500 V, and 690 V) is a high-interrupting rating. It tells the panel builder that this breaker can be used at the main distribution point without needing a current-limiting fuse upstream — saves panel space and wiring. Rated operating voltage span is 20 to 690 V, so it covers common low-voltage motor circuits from control transformers up to 690 V industrial mains.
Panel integration notes
Clearance requirements: 50 mm above and below, 30 mm to the side, 0 mm forward and backward — tight enough for dense DIN-rail layouts. The size S00 frame keeps the footprint compact. Terminals accept 2×(0.75 to 2.5 mm²) solid or stranded, or 2×4 mm², with screwdriver shaft diameter 5 to 6 mm and Pozidriv size 2 tip. Ambient operating range is -20 to +60 °C; storage and transport range is -50 to +80 °C.