Littelfuse LA70QS300-4 - Powr-Speed Fuse 300A (200kA@700V AIC)

Littelfuse LA70QS300-4 is a low voltage fuse from the Powr-Speed family designed for high-performance circuit protection in demanding industrial applications. It features a 700V voltage rating with a 300A current rating and delivers very fast-acting (VFA) interruption characteristics. The fuse employs a single-barrel construction with 2-inch diameter bolt-in connection and weighs 1 lb for robust installation. It complies with industry standards for high-interrupting capacity devices and carries a 200kA@700V AIC rating. Typical applications include protection of industrial equipment, power distribution systems, and heavy machinery where reliable fault current interruption is critical.

Key Features & Specifications

• Type: LA70QS very fast-acting (VFA) current-limiting fuse with single-barrel construction
• Voltage Rating: 700V
• Current Rating: 300A
• Dimensions: 2-inch diameter
• Standards: Industry standards for high-interrupting capacity protection
• Applications: Industrial equipment, power distribution systems, heavy machinery protection
• AIC rating: 200kA@700V
• Connection: Bolt-In
• Barrels: 1
• Velocity: VFA - Very Fast Action
• Weight: 1 lb
• Family: Powr-Speed
• Item Subcategory: Low Voltage