Eaton 449D672A39 - RBT4 Medium Voltage Fuse 100A @ 14.4kV (29.4kA AIC)

The Eaton 449D672A39 is a medium voltage RBT4 current-limiting fuse designed for high-voltage circuit protection in industrial power distribution systems. This Class E rated fuse operates at 14.4kV with a 100A current rating and features a two-barrel construction with slow blow characteristics for coordinated protection. It provides reliable interruption capability with a 29.4kA AIC rating at 14.4kV, meeting stringent industrial standards for medium voltage applications. The fuse's robust design ensures stable performance in demanding electrical environments including utility substations, industrial plants, and large commercial facilities where medium voltage protection is critical.

Key Features & Specifications

• Type: RBT4 current-limiting fuse, two-barrel construction, slow blow operation
• Voltage Rating: 14,400V AC
• Current Rating: 100A
• Dimensions: Standard Class E configuration
• Standards: Industrial medium voltage protection standards
• Applications: Industrial power distribution, utility substations, medium voltage systems
• AIC rating: 29.4kA @ 14.4kV
• Class Rating: E
• Barrels: 2
• Velocity: Slow
• Weight: 3 lb
• Item Subcategory: Medium Voltage