3RA2120-1FD24-0BB4 SIEMENS

The 3RA2120-1FD24-0BB4 Siemens load feeder is a fuseless direct-on-line starter designed for efficient motor control at 400 V AC. This compact Size S0 device is suitable for motors with a current range of 3.50 to 5.00 A. It operates on a 24 V DC control supply and features screw terminals for easy installation on 60 mm busbar systems. The load feeder is engineered to meet both Type of Coordination 1 and Type of Coordination 2 standards, ensuring reliable protection and minimal downtime in various fault conditions. With a high short-circuit breaking capacity of Iq = 150 kA, it provides robust protection against short-circuit currents. The integrated contactor includes 1 NO (normally open) and 1 NC (normally closed) auxiliary contacts for enhanced control and monitoring capabilities. This load feeder offers a space-saving and cost-effective solution for motor starting applications. Its fuseless design reduces maintenance requirements and minimizes the risk of single-phasing. The 3RA2120-1FD24-0BB4 is an ideal choice for applications requiring reliable and coordinated motor protection.