Mersen A25X400-4 - Class J Semiconductor Fuse 400A@250V (10.6kA AIC)

Mersen A25X400-4 is a bolt-in semiconductor protection fuse from the Amp-Trap family, engineered for safeguarding sensitive electronic equipment against short-circuit and overload conditions. Rated for 250V AC/DC systems with a 400A current capacity, it delivers 10.6kA interrupting capacity at rated voltage in a compact 1.5-inch diameter single-barrel design. The robust construction features precision-engineered fusible elements housed in a durable ceramic body, compliant with industrial protection standards for semiconductor applications. Typical installations include variable frequency drives, rectifiers, and other power electronics requiring Class J protection.

Key Features & Specifications

• Type: Bolt-in semiconductor fuse (Class J), ceramic body
• Voltage Rating: 250V AC/DC
• Current Rating: 400A
• Dimensions: 1.5" diameter
• Standards: UL/CSA recognized
• Applications: VFDs, rectifiers, power converters
• AIC rating: 10.6kA@250V
• Connection: Bolt-in termination
• Class Rating: Semiconductor protection (Class J)
• Barrels: Single-barrel construction

Product Identification

• UPC: 78200194274
• GTIN: 00782001942748