Ferraz Shawmut NSB A4J350 Fuses are a model of circuit-protection devices from Ferraz Shawmut, identified by the NSB A4J350 designation. This listing is for a single unit (EA), intended as a replacement fuse in compatible equipment that uses the NSB A4J350 format. Fuses of this type provide overcurrent protection by interrupting current when a fault occurs in the protected circuit.
