Mersen A550X250E-1 - Medium Voltage Current-Limiting Fuse 250A (5500V, 63kA AIC)

Mersen A550X250E-1 is a medium voltage current-limiting fuse from the CS-3 series designed for protecting electrical equipment in industrial power distribution systems. It features a 5500V AC voltage rating and a 250A current rating, providing reliable overcurrent and short-circuit protection. The fuse construction utilizes a single-barrel design with ferrule connections, measuring 3 inches in diameter and requiring a 12-inch clip center for proper mounting. This Class E rated fuse complies with industry standards for medium voltage applications and carries an impressive 63kA interrupting rating at 5.5kV. Typical applications include motor protection, transformer circuits, and feeder protection in industrial plants and utility substations where robust medium voltage protection is essential.

Key Features & Specifications

• Type: Medium Voltage Current-Limiting Fuse, Single Barrel, Ferrule Connection
• Voltage Rating: 5500V AC
• Current Rating: 250A
• Dimensions: 3" Diameter
• Standards: Class E Rated
• Applications: Industrial Power Distribution, Motor Protection, Transformer Circuits
• AIC Rating: 63kA @ 5.5kV
• Connection: Ferrule
• Barrels: 1
• Clip Center: 12 inches
• Weight: 5 lb
• Family: CS-3 Series
• Fuse Class: E