Contactor, AC-1, 40 A/400 V/40 °C, S0, 4-pole, 24 V AC/50 Hz, 1 NO+1 NC, Spring-type terminal Contactor SIRIUS 3RT23 for switching resistive loads. The 3RT23 contactors are part of the modular SIRIUS system with its optimally coordinated products. They offer convincing performance from a compact design with high contact reliability. They can be combined with a variety of other components in the load feeder. Many of the device combinations have been factory tested. The contactors offer the best connection to the automation level for every application (parallel, via ASi or IO-Link): Integrated auxiliary switches reduce the complexity of your configuration. The front-panel terminals simplify the wiring. 3RT23 contactors are climate-resistant and approved for worldwide use (e.g. IEC and UL/CSA). They are available in various sizes and in a wide performance range with AC and DC operation. In addition to screw terminals, all the devices are also available with spring-type terminals for fast, 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 and always up to date – SIRIUS modular system.