Ferraz Shawmut A550X300E-1 - Medium Voltage Fuse 5500V/300A (63kA AIC @5.5kV)

Ferraz Shawmut A550X300E-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 300A current rating, with a ferrule connection and single-barrel construction for reliable performance. The Class E-rated fuse measures 3 inches in diameter with a 12-inch clip center spacing, constructed for 63kA interrupting capacity at 5.5kV to meet demanding fault current requirements. Compliant with industry standards for medium-voltage protection, it is engineered for switchgear, motor control centers, and transformer protection applications.

Key Features & Specifications

• Type: Current-limiting medium-voltage fuse (CS-3 series, A055 type)
• Voltage Rating: 5500V AC
• Current Rating: 300A
• Dimensions: 3" diameter, 12" clip center
• Standards: Class E rated
• Applications: Industrial switchgear, MCCs, transformer protection
• Connection: Ferrule
• Barrels: 1
• AIC rating: [email protected]
• Weight: 5 lb