Siemens Power Contactor, 4kW, 24V DC - SIRIUS 3RT2 Series - 3RT2016-1BB42 This Siemens contactor is designed for the control of current in an electrical system. It's ideal for the start-up and shut-down of industrial motors and provides outstanding contact reliability. Although it can stand up to harsh industrial tasks, it doesn't need much maintenance to function reliably. The unit is shock resistant and offers a long mechanical life. A compact profile allows for high packing density in control cabinets, while its no-spacing mounting ability means you don't need to leave gaps between modules. • Includes short-circuit protection for an enhanced degree of safety
• Dimensions of 58 (height) x 45 (width) x 73mm (depth) for standard use
• Quick and easy to configure with an ergonomic, user-friendly design that simplifies installation and operation
• Wide operating temperature range of -25°C to +60°C for use in demanding industrial environments How does a power relay work? A power relay uses an electromagnet to open or close an electrical circuit. For safety and efficiency, it provides a high level of isolation between the control signal or input and the output or contacts.