3RT1924-5AG21

The 3RT1924-5AG21 is a replacement AC operating coil from Siemens' SIRIUS 3RT1 series, engineered to restore or modify the control voltage operation of Size S0 power contactors. Designed for direct insertion into 3-pole 3RT102 contactor frames, this precision-wound component operates within control circuits rated for 110. Electrically, the 3RT1924-5AG21 is calibrated for a control power supply, delivering consistent magnetic pull-in and secure holding force for continuous-duty switching. Constructed with high-grade magnet wire and thermal insulation, it ensures low power consumption, minimal heat dissipation, and chatter-free contact closure under high-duty-cycle industrial operations. Mechanically, the 3RT1924-5AG21 features a drop-in replacement design that allows straightforward access to the contactor's magnetic core assembly during panel maintenance or coil voltage retrofits. Equipped with touch-safe IP20 screw terminals, it installs securely into the Size S0 contactor housing without requiring full disassembly or disturbing main power circuit wiring. Purchase the 3RT1924-5AG21 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes trusted contactor coils, magnetic contactors, and motor control accessories from top manufacturers like Siemens, Eaton, Cutler-Hammer, and Schneider Electric, backed by a knowledgeable sales team ready to assist with technical questions, product selection, and support.