Mersen A550X400E-1 - Medium Voltage Fuse 5500V/400A (63kA AIC @5.5kV)

Mersen A550X400E-1 is a medium voltage current-limiting fuse designed for high-voltage circuit protection in industrial power systems. This CS-3 series fuse features a 5500V AC voltage rating and 400A current rating with a 63kA interrupting capacity at 5.5kV, housed in a durable ferrule-connected single-barrel design with 3" diameter and 12" clip center spacing. The Class E-rated fuse meets stringent industry standards for medium voltage applications with its 22 lb robust construction. Typical applications include transformer protection, motor circuits, and feeder protection in industrial power distribution systems.

Key Features & Specifications

• Type: Medium voltage current-limiting fuse (A055 type)
• Voltage Rating: 5500V AC
• Current Rating: 400A
• Dimensions: 3" diameter, 12" clip center
• Standards: Class E rated
• Applications: Industrial power systems, transformer protection
• AIC rating: [email protected]
• Connection: Ferrule
• Barrels: 1
• Weight: 22 lb
• Family: CS-3 Series