Contactor AC-1, 40 A, 400 V / 40 °C, 4-pole, DC 24 V, auxiliary contacts: 1 NO + 1 NC, screw connection, size: S0 Contactor SIRIUS 3RT23 for switching resistive loads. The 3RT23 contactors are part of the SIRIUS modular system with its optimally coordinated products. They impress with their high performance combined with a compact design and high contact reliability. They can be combined in many ways with other components in the load feeder. Many of the device combinations are factory-tested. The contactors offer the optimal connection to the controller for every application (parallel, via ASi or IO-Link). Integrated auxiliary switches reduce the complexity of your setup. The front connections enable easy wiring. The 3RT23 contactors are climate-resistant and approved worldwide (eg IEC and UL/CSA). They are available in various sizes and in a wide power range in AC and DC operation. In addition to screw connection technology, the devices are also available with spring-loaded connections for quick, maintenance-free and vibration-proof connection. The comprehensive range of accessories, such as auxiliary switches, auxiliary releases, etc., is standardized for all sizes. Simple, efficient, always up-to-date - the SIRIUS modular system.