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FRS400 - Class J Current-Limiting Fuse 400A 600V

United Fuses
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The FRS400 is a current-limiting fuse designed to provide reliable overcurrent protection in industrial power distribution systems. It features a 600V AC voltage rating and is engineered to interrupt high fault currents with a 200kA AC symmetrical interrupting rating. The fuse is constructed with a durable ceramic body and silver-plated copper end caps, contributing to its robust 5.19 lb weight and ensuring stable performance. It complies with UL 248-12 standards for Class J fuses, guaranteeing adherence to stringent safety and performance requirements. Typical applications include protecting motor circuits, transformers, and feeder circuits in industrial panels and switchgear.

Key Features & Specifications
  • Type: Class J, Current-Limiting, One-Time Fuse with ceramic body and silver-plated copper end caps
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: Standard Class J dimensions
  • Standards: UL 248-12
  • Applications: Protection for industrial motor circuits, transformers, and feeder circuits
  • Weight: 5.19 lb
  • AIC rating: 200kA AC symmetrical