Siemens SIRIUS 3RA21204NH270BB4 3RA21 SZ 0 Load Feeder Fuseless Combination Starter, 400 VAC V Coil, 3 Poles

Siemens SIRIUS Combination Starter, SZ 0 Load Feeder Fuseless, Series: 3RA21, 690 VAC, 28 A, 50/60 Hz Frequency, 15000 W Wattage, 400 VAC Coil, 3 Pole, Setting: 23 to 28 A, 3 ph, 10,000,000 cycles Operating Cycles,-20 to 60 deg C Operating, 260 mm H x 45 mm W x 165 mm D Dimensions

The 3RA2 fuseless load feeders consist of the 3RV2 motor starter protector and the 3RT2 electromechanical contactor. The devices are electrically and mechanically connected using preassembled assembly kits (link modules, wiring kits and standard mounting rail or busbar adapters). Around 500 preassembled 3RA2 combinations can be ordered for direct-on-line and reversing starting of standard three-phase motors up to 65 A (approx. 37 kW/400 V). Preassembled assembly kits are available as accessories for the power range up to 45 kW. The desired fuseless load feeder can thus be assembled quickly and economically by the customer. A time saving is also achieved in connection with switchgear acceptances, as unlike with conventional wiring systems there is no need to rectify possible wiring errors. In the load feeder 3RA2, the 3RV2 motor starter protector is responsible for overload and short-circuit protection. Back-up protective devices, such as melting fuses or limiters, are superfluous here, as the motor starter protector is short-circuit proof up to 150 kA at 400 V.