L50QS400 - Littelfuse 400A 500V AC/DC High-Speed Semiconductor Fuse, Class aR, Round Body

L50QS400

L50QS400 is a Littelfuse high-speed semiconductor fuse designed for protecting sensitive high-power semiconductor devices in industrial applications.This fuse features a 400 ampere current rating and a voltage rating of 500 volts AC/DC. It is a very fast-acting (FF) Class aR fuse with a round body cartridge style, optimized for power converters, UPS systems, variable speed drives, and control circuits. The fuse has an interrupting rating of 200 kA at 500 VAC and 50 kA at 500 VDC, ensuring reliable protection under high fault conditions. It is halogen-free, RoHS and REACH compliant, and carries cURus and CE certifications.

Key Specifications
• Current Rating: 400 A
• Voltage Rating: 500 V AC/DC
• Interrupting Rating: 200 kA AC / 50 kA DC
• Fuse Class: aR
• Body Style: Round Body Cartridge
• Operating Temperature: -55°C to +125°C
• Material: Melamine body, silver-plated copper alloy caps
• Mounting Type: Bolt mount
• Certifications: cURus, CE, RoHS, REACH
• Halogen Free: Yes
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Specifications

• Part Number: L50QS400
• Manufacturer : Littelfuse
• Brand : Littelfuse
• Category : Fuse
• Item Subcategory : Low Voltage
• Family : Powr-Speed
• Type : L50QS Series – High-Speed Semiconductor Fuse, Round Body
• Voltage : 500
• Amperage : 400
• AIC rating : 200kA@500V
• Diameter : 1.5
• Barrels : 1



Product Data

• UPC : 079458860085
• Weight : 2