Littelfuse KLSR-125 - RK1 Fuse 125A (200kA AIC @600V AC)

Littelfuse KLSR-125 is a Class RK1 low-voltage fuse designed for high-interrupting capacity circuit protection in industrial power distribution systems. It features a 125A current rating with dual voltage ratings of 600V AC and 300V DC, housed in a durable 46.80mm diameter × 244.50mm length (1.843" × 9.626") cylindrical body with knife blade terminals for secure mounting. The fuse meets UL (E81895), CSA (LR29862), and CE standards, offering 200kA AIC at 600V AC and 20kA at 300V DC for reliable fault current interruption in motor control centers, switchgear, and panelboards.

Key Features & Specifications

• Type: Class RK1 current-limiting fuse with sand-filled ceramic body
• Voltage Rating: 600V AC / 300V DC
• Current Rating: 125A
• Dimensions: 46.80mm × 244.50mm (1.843" × 9.626")
• Weight: 1.17 lb
• Standards: UL Listed (E81895), CSA Certified (LR29862), CE Marked
• Applications: Industrial power distribution, motor protection, switchgear
• Mounting: Knife blade terminals
• AIC rating: 200kA @ 600V AC, 20kA @ 300V DC
• Fuse Class: RK1

Product Identification

• UPC: 079458290844
• GTIN: 079458290844