Power contactor, AC-3e/AC-3 500 A, 250 kW / 400 V AC (50-60 Hz) / DC Uc: 42-48 V, 3-pole, auxiliary contacts 2 S + 2 Ö. Drive: conventional, main current: rail, control and auxiliary circuit: screw connection. SIRIUS 3RT1 power contactor for switching motors. The 3RT1 contactors are part of the SIRIUS modular system with optimally coordinated products. They impress with high performance in a compact design and high contact reliability. They can be combined in various ways with other components in the consumer branch. The contactors offer the appropriate connection to the control system for every application (directly or via PLC input). Pre-assembled auxiliary switches reduce the complexity of your setup. The 3RT1 contactors are climate-resistant, globally approved (e.g., IEC and UL/CSA), and IE3/IE4 ready. They are available in various sizes and a wide range of power ratings. They can be operated with AC or DC, and some variants feature a wide voltage range and a PLC control input. In the main circuit, the devices can be connected via rails or frame terminals. For the auxiliary and control circuit, they are also available with spring-loaded connections for a quick, maintenance-free, and vibration-resistant connection. There is a wide range of accessories for these contactors, such as wiring kits that significantly reduce wiring effort, auxiliary switches, or terminal covers. Simple, efficient, always up to date - the SIRIUS modular system.