3TC5617-0LB4 SIEMENS

The 3TC5617-0LB4 is a robust and reliable 2-pole contactor from Siemens, designed for demanding DC switching applications. It falls under size 12, making it suitable for medium to high power circuits. This contactor is specifically rated for DC-3 and DC-5 utilization categories, with a current rating of 400A at 750V DC. Equipped with auxiliary contacts configured as 2NO + 1NC (2 Normally Open and 1 Normally Closed), it provides versatile signaling capabilities for control and monitoring circuits. The contactor operates on a 24V DC control voltage, ensuring compatibility with common industrial control systems. It incorporates a varistor and series resistor within its DC operation circuitry, enhancing its surge protection and operational lifespan. The operating voltage range is specified from 0.7 to 1.25 times the rated control voltage (US), providing tolerance to voltage fluctuations. This feature ensures reliable operation even under varying supply conditions. The 3TC5617-0LB4 is ideal for applications requiring dependable DC switching, such as in electric vehicle charging stations, battery storage systems, and DC power distribution networks.