The Siemens 3RA2120-1GD24-0AP0 is a SIRIUS direct on-line starter in the S0 load feeder size, combining a contactor and a thermal bimetallic overload relay in one package designed to snap onto 60 mm busbar systems. It is a fully assembled functional unit — the supplied contactor is the 3RT2024-1AP00, the link module is 3RA2921-1AA00, and the busbar adapter is 8US1251-5NT10. The thermal bimetallic design gives a true RMS heating response, so it tracks actual motor heating through repeated starts. It is rated for a 2.2 kW motor at 400 V (AC-3 duty) and draws 4.8 A at 480 V, with horsepower ratings spanning 1 hp at 200/208 V up to 5 hp at 575/600 V. The maximum operating voltage is 690 V AC-3.
Designed specifically for snapping onto 60 mm busbar systems — the fastening method and overall design are built for that rail pitch. Mounting position is vertical only. Dimensions: 260 mm height, 45 mm width, 155 mm depth. Clearance requirements: 50 mm upward, 20 mm forward, 20 mm at the side, 10 mm downward, 0 mm backward.
This is a specified BOM-line part for panels built around 60 mm busbar systems. Submit an RFQ for current pricing and availability.