Allis Chalmers 48FM9R-4 - FM-Class Fuse 4800V/9A (R-Rated Current Limiting)

Allis Chalmers 48FM9R-4 is a medium voltage fuse designed for industrial circuit protection in high-voltage applications. This FM-class fuse features a 4800V AC rating with a 9A current capacity, housed in a durable ferrule-connected single-barrel construction measuring 3" in diameter and 12" clip center spacing. Its R-class rating ensures reliable current limitation and arc quenching for medium-voltage systems, complying with industry standards for electrical safety. The fuse is commonly used in power distribution equipment, transformers, and motor protection circuits where robust overcurrent protection is required.

Key Features & Specifications

• Type: FM-class medium voltage fuse with ferrule connection
• Voltage Rating: 4800V AC
• Current Rating: 9A
• Dimensions: 3" diameter, 12" clip center spacing
• Class Rating: R (current-limiting)
• Construction: Single-barrel design
• Weight: 9 lb
• Applications: Power distribution, transformer protection, industrial motor circuits