Littelfuse L50QS125 - High-Speed Semiconductor Fuse 125A (500V, 200kA AIC)

Littelfuse L50QS125 is a high-speed semiconductor fuse designed for protecting sensitive electronic components in industrial power applications. This 500V-rated fuse features a 125A current rating and provides exceptional 200kA interrupting capacity at 500V for reliable short-circuit protection. The single-barrel round body construction measures 1.22 inches in diameter with a robust design weighing 5.19 lb, ensuring mechanical durability in demanding environments. As part of the Powr-Speed family, this low-voltage fuse meets rigorous industrial standards for semiconductor protection. Typical applications include power converters, motor drives, and UPS systems where rapid fault clearing is critical to prevent damage to expensive semiconductor devices.

Key Features & Specifications

• Type: L50QS Series High-Speed Semiconductor Fuse, Round Body, Single Barrel
• Voltage Rating: 500V
• Current Rating: 125A
• Dimensions: 1.22" Diameter
• Standards: Industrial Semiconductor Protection
• Applications: Power Converters, Motor Drives, UPS Systems
• AIC Rating: 200kA@500V
• Weight: 5.19 lb
• Family: Powr-Speed
• Item Subcategory: Low Voltage

Product Identification

• UPC: 079458859997