Littelfuse LRU263R - Time-Delay Fuse Reducer 600VAC/250A (Class RK5)
Littelfuse LRU263R - Time-Delay Fuse Reducer 600VAC/250A (Class RK5)

Littelfuse LRU263R - Time-Delay Fuse Reducer 600VAC/250A (Class RK5)

Littelfuse
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Littelfuse LRU263R is a time-delay fuse reducer designed for overcurrent protection in industrial electrical systems. It features a 600V AC rating with a 250A current capacity, housed in a compact cylindrical ceramic body for durability in high-temperature environments. The fuse meets UL/CSA standards for circuit protection and is commonly used in motor control centers, transformers, and power distribution panels. Its time-delay characteristic allows temporary inrush current tolerance while providing reliable protection against sustained overloads.

Key Features & Specifications
  • Type: Ceramic-body time-delay fuse reducer with sand-filled arc quenching
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Dimensions: 2.25" (57.15mm) length x 0.5" (12.7mm) diameter
  • Standards: UL 248-12, CSA C22.2 No. 248.12
  • Applications: Motor protection, transformer circuits, industrial power distribution
  • Fuse Class: Class RK5
  • Interrupt Rating: 200kA at 600V AC
  • Operating Temperature: -40°C to +125°C
  • Mounting: Bolt-on terminal connection