Siemens SIEM direct starter

Consumer branch, without fuse, direct start AC 400 V, size S00, 1.80...2.50 A, DC 24 V, screw connection for mounting on DIN rail (also meets assignment type 1), assignment type 2, Iq = 150 kA, 1Ö (contactor), 1S+1Ö (circuit breaker, transverse).

The SIRIUS 3RA21 direct starter is designed for protecting and starting motors. The 3RA21 direct starter is a tested and factory pre-assembled combination of a 3RV2 circuit breaker and a 3RT2 contactor, which are already wired and mechanically and electrically connected. They are climate-resistant, globally approved (e.g., IEC and UL/CSA), and IE3/IE4 ready.

The 3RA2 consumer branches are available with AC and DC actuation in sizes S00, S0, and S2 with setting ranges from 0.14 to 65 A. They are offered in screw and spring connection technology for mounting on DIN rail, screw fastening, and mounting on 60 mm busbars. Additionally, we provide over 40,000 other tested combinations of individual devices for protecting, switching, and starting various applications up to 630 A.

All accessories for the 3RV2 circuit breakers and 3RT2 contactors are standardized for all sizes and can also be used for the consumer branches. The optional power supply system SIRIUS 3RV29 (for S00 and S0) significantly reduces wiring effort.

The 3RA21 consumer branches replace the proven 3RA11 series. Simple, efficient, always up to date - the SIRIUS system modular concept.