Motor rating and protection class for the BOM line
The 3RA2125-4BH27-0FB4: The thermal overload release is bimetallic (Class 10), and the short-circuit trip is magnetic, giving coordinated motor protection within the S0 feeder size. The supplied contactor is 3RT2027-2FB40, and the supplied circuit-breaker is 3RV2021-4BA25 — these are the matched components that deliver the listed rating. For audit purposes, the combination is factory-tested for coordination under IEC 60947-4-1.
Mounting and wiring for panel integration
Designed for snapping onto 60 mm busbar systems, with a vertical mounting position. The enclosure dimensions are 45 mm wide, 260 mm high, and 165 mm deep — the 45 mm width fits standard S0 feeder slots in a distribution board. Both main and auxiliary/control circuits use spring-loaded terminals, which reduces wiring time and ensures consistent contact pressure without retorquing. Clearance distances: 50 mm upwards, 20 mm forwards, 10 mm downwards, 20 mm at the side — factor these into the gland plate and cable routing.
The operating temperature range is -20 to +60 °C, with temperature compensation active across that band, so it is suitable for unconditioned enclosures in most industrial environments.