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Thomas & Betts 8521 - RK1 Fuse 600V 100A (Industrial Protection)

Thomas & Betts
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The Thomas & Betts 8521 is a heavy-duty industrial fuse designed for overcurrent protection in high-power electrical systems. It is rated for a maximum voltage of 600V AC/DC and a current rating of 100A, featuring a compact construction with a 4.4 lb weight and dimensions suitable for standard fuse holders. This fuse complies with UL and CSA standards, ensuring reliable performance in demanding environments. It is commonly used in motor control centers, panelboards, and switchgear for branch circuit protection.

Key Features & Specifications
  • Type: Industrial fuse, non-renewable, ferrule contact
  • Voltage Rating: 600V AC/DC
  • Current Rating: 100A
  • Dimensions: 2.0" diameter x 5.0" length (approximate)
  • Standards: UL Listed, CSA Certified
  • Applications: Motor control centers, panelboards, switchgear, branch circuit protection
  • Fuse Class: RK1
  • Interrupting Rating: 200kA RMS Sym.
  • Mounting: Clip or ferrule
  • Operating Temperature: -40°C to 80°C
  • Weight: 4.4 lb


Product Identification
  • UPC: 78621008521
  • GTIN: 00786210085210