11 kW at 400 V — direct-on-line motor starting, SIRIUS Size S0
The 3RA2125-4CE27-0FB4: This covers standard 400 V three-phase motor loads up to 11 kW — pumps, fans, conveyors — in a single pre-assembled unit. It ships with a 3RT2027-2FB40 contactor and a 3RV2021-4CA25 circuit-breaker already linked via the 3RA2921-2AA00 link module. The overload release is thermal bimetallic (Class 10), and the short-circuit trip is magnetic — no separate motor protection relay to wire. Spring-loaded terminals on both the main current circuit and the auxiliary/control circuit speed panel wiring — no screw torque verification needed on the line side.
Mounting and panel fit — 45 mm wide, screw or DIN rail
The starter is 45 mm wide, 243 mm high, and 107 mm deep — it occupies a single S0-size slot on 35 mm standard mounting rail. Fastening method is screw and snap-on; mounting position is vertical. Clearance requirements: 50 mm upwards, 20 mm forwards, 10 mm downwards, 20 mm at the side, 0 mm backwards. Size S0 means the circuit-breaker and contactor share the same frame footprint — the assembly fits into a standard 45 mm-wide DIN cell without overhang.
Environmental and compliance — -20 to +60 °C operation, 50/60 Hz
Rated for operation from -20 to +60 °C ambient, with storage and transport range of -50 to +80 °C. Relative humidity during operation: 10 to 95 %. Surge voltage resistance is 6 kV. Operating frequency is 50... 60 Hz. The starter supports a product extension auxiliary switch (yes). PROFIsafe and PROFINET IO protocols are not integrated — this is a conventional hard-wired direct starter, not a fieldbus slice.
Sourcing — current lifecycle, quoted to order
Sourced through independent distribution channels. No stock-holding claim; quoted per order.