Siemens 3RA1225-1AB23-1AU6 Reversing Combination Starter

The Siemens 3RA1225-1AB23-1AU6 is a reversing combination starter in the SIRIUS S0 frame, rated for 1.1-1.6 A and controlled at 480 VAC. It integrates a motor starter protector (MSP), a reversing contactor pair, and auxiliary contacts into one DIN-rail or panel-mount unit — a single order code that replaces the separate breaker, contactors, and wiring a reversing motor starter would otherwise require. The UL file E156943 (Vol.1 Sec.14) is listed, so it carries UL acceptance for North American panels. The auxiliary complement includes one SPDT NO/NC contact on the MSP and one NO contact on the contactor, both front-mounted and accessible for control-wire termination. The 480 VAC control voltage means the coil is line-powered from the same 480 V supply feeding the motor circuit — no separate control transformer needed for the reversing logic.