3RA1120-1FD24-0BB4 SIEMENS

The 3RA1120-1FD24-0BB4 is a fuseless direct-on-line load feeder from Siemens, designed for starting motors in systems operating at 400 V AC. It is a Size S0 device with an adjustable current range of 3.5-5 A, suitable for motors with corresponding power requirements. The unit is equipped with a 24 V DC coil for control purposes, facilitating remote operation and integration into automated systems. It utilizes screw terminals for secure and reliable electrical connections, mounted on a 60 mm busbar adapter for easy installation within standard control panels. This load feeder is designed to meet Type of Coordination 2, providing enhanced protection against short-circuit currents up to an Iq of 50 kA, and also fulfills the requirements for Type of Coordination 1. Please note that the 3RA1120-1FD24-0BB4 has been phased out and is now considered a spare part. The recommended successor is the SIRIUS 3RA2, specifically model 3RA2120-1FD24-0BB4, offering updated features and improved performance. As a spare part, it is intended for maintenance and repair of existing systems using this specific model.