power contactor, AC-3 9 A, 4 kW / 400 V 1 NC, 24 V DC 0.7-1.25*Us 3-pole, size S00 spring-type terminal with integrated diode, suitable for PLC outputs not expandable with auxiliary switch Coupling contactor SIRIUS 3RT2 for switching motors and auxiliary and control circuits, specially designed for direct connection to electronic controllers. The 3RT2 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. Integrated auxiliary switches reduce the complexity of your design. The front-panel terminals simplify the wiring. The 3RT2 contactors are climate-resistant, approved for worldwide use (e.g. IEC and UL/CSA) and are IE3/IE4-ready. In addition to screw terminals, all the devices are also available with spring-type terminals for fast, maintenance-free and vibration-proof connection. Simple, efficient and always up to date – SIRIUS modular system.