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

Eaton 449D672A39 is a medium voltage RBT4 fuse designed for high-voltage circuit protection in industrial applications. It features a 14.4kV voltage rating and 100A current capacity with a slow-blow characteristic for controlled interruption. The dual-barrel construction with Class E rating provides reliable protection up to 29.4kA interrupting capacity at rated voltage. Compliant with industry standards for medium voltage protection, this 3 lb fuse is engineered for substations, transformers, and heavy industrial equipment requiring robust overcurrent protection.

Key Features & Specifications

• Type: Medium voltage RBT4 fuse with slow-blow characteristic
• Voltage Rating: 14,400V AC
• Current Rating: 100A
• AIC Rating: 29.4kA @ 14.4kV
• Class Rating: E
• Barrels: 2
• Velocity: Slow
• Weight: 3 lb
• Applications: Industrial power distribution, substations, transformer protection