Eaton Medium Voltage Expulsion Fuse Refill 38RBA4-300E-FN

Rated at 38 kV maximum with 34.5 kV nominal system voltage, the Eaton Cutler Hammer 38RBA4-300E-FN is a Type RBA4 expulsion fuse refill unit for medium voltage power distribution applications. This Class E rated refill carries a 300E continuous current rating and is designed for use in RBA series fuse mountings for indoor power distribution system protection. The MNFS package designation indicates the standard fuse refill configuration with FN suffix denoting the fully assembled refill unit. RBA series expulsion fuses are commonly applied for protecting transformers, capacitor banks, feeders, and other medium voltage equipment in industrial substations, utility distribution systems, and commercial power installations operating up to 34.5 kV nominal. The Type RBA4 mounting interface provides reliable connection within compatible Eaton RBA fuse holders and switchgear assemblies. Construction features a fiberglass body designed for repeated operation in harsh industrial environments, with E rated time current characteristics conforming to IEEE Std. C37.41 for power class fuses. The 300E continuous current rating identifies this unit for applications requiring substantial load handling capacity with coordinated overcurrent protection. Original manufacturer packaging includes inventory identification labels MNFS 38RBA4 300E FN 34.5 KV FUSE and barcode 334022. The unit is provided as a single piece replacement refill for Eaton Cutler Hammer medium voltage fuse assemblies. Supersedes earlier Westinghouse RBA series fuse refill units and is functionally equivalent for compatible installations. Length approximately 13.62 inches per published Eaton specifications for the 38RBA4 series refill.

Stock # 0526-02365