The 3RV2031-4DA10-ZX95: Trip Class 10 means it clears a locked-rotor condition within 10 seconds at 7.2× rated current — standard for most general-purpose motor loads like pumps, fans, and small conveyors. Rated short-circuit breaking capacity at 400 V is 30 kA, dropping to 6 kA at 500 V and 3 kA at 690 V.
Width is 55 mm, depth 149 mm, height 140 mm. Clearance: 50 mm above and below, 10 mm to the side, zero forward or backward. Main circuit terminals accept 2× (1–25 mm²) or 1× (1–35 mm²) solid or stranded copper. Screw-type terminals, M6 on the main contacts. Torque them properly — loose connections on a motor circuit breaker are a fire risk, not just a nuisance trip.