Westinghouse RBA-RDB-400 Power Fuse Refill Assembly

The Westinghouse RBA-RDB-400 Power Fuse Refill provides high-current overcurrent protection for industrial power distribution and electrical protection systems. Commonly installed in switchgear assemblies, electrical distribution equipment, and power control systems, it delivers reliable fuse protection and fault interruption for continuous operation. Key specifications include MPN 423D815A20, fuse type RBA-RDB-400, current rating 300E Amps, and installation as a switchgear or fuse assembly mount within industrial power distribution systems. Designed for overcurrent protection across substations, industrial power installations, and electrical control systems, it is compatible with industrial switchgear and electrical distribution equipment, with common replacements including Westinghouse 423D815A21 Power Fuse Refill, Eaton RBA-RDB-400 Power Fuse, and GE EJ-4300E Power Fuse.