3RA2120-4AD26-0BB4 SIEMENS

The 3RA2120-4AD26-0BB4 Siemens load feeder is a fuseless direct-on-line starter designed for 400 V AC applications. It is a size S0 device, suitable for motor currents ranging from 10 to 16 A. The control voltage is 24 V DC, and it utilizes screw terminals for easy and secure connection. This load feeder is specifically designed for 60 mm busbar systems, ensuring efficient power distribution. It meets the requirements for both Type of Coordination 1 and Type of Coordination 2, providing flexibility in system design and protection. With a high short-circuit breaking capacity of Iq = 150 kA, it offers reliable protection against short-circuit faults. The integrated contactor includes 1 NO (normally open) and 1 NC (normally closed) auxiliary contacts for control and monitoring purposes. This compact and efficient load feeder provides a complete solution for direct-on-line motor starting applications, ensuring both motor protection and control. Its fuseless design reduces maintenance and downtime, while its compliance with coordination types 1 and 2 allows for optimized system protection strategies.