JJN-400 - 400Amp Fuse

JJN-400 - 400Amp Fuse

Protect your high‑power industrial equipment with the JJN‑400 fuse, built for demanding electrical environments and delivering consistent overcurrent protection when you need it most. With a 400 amp rating, this Class T fuse gives you current‑limiting performance that prevents damaging surges from impacting Variable Frequency Drives (VFDs), large motors or major power distribution systems. With an interrupting capacity of 200 kA at 300 VAC and 20 kA at 160 VDC, the JJN‑400 stands up to serious fault‑current events and clears them quickly and cleanly.

Key Features and Benefits

• Fast‑acting, current‑limiting design: Clears overcurrent events in a snap, helping protect sensitive equipment and minimize downtime.
• Heavy‑duty bolted blade end × bolted blade end connection: Provides solid, stable contact for high‑amperage environments and helps reduce maintenance headaches.
• Non‑indicating type: Simple design, reliable performance – ideal where ongoing monitoring isn’t required but protection is essential.
• High interrupt rating: 200 kA at 300 VAC and 20 kA at 160 VDC ensure that even extreme fault currents get handled safely.
• Clear specification for sizing: 400‑amp rating makes selection straightforward for large loads, motor controls, and other power‑critical systems.

Technical Specifications

• Catalog Number: JJN‑400
  
• Amperage Rating: 400 Amps
  
• Voltage Rating: 300 VAC / 160 VDC
  
• Interrupting Capacity:
  • 200 kA at 300 VAC
  • 20 kA at 160 VDC
• Fuse Class: Class T
  
• Fuse Type: Non‑Indicating
  
• Connection Type: Bolted blade end × bolted blade end
  
• Dimensions:
  • Length: approx. 2.75″
  • Height: 1″
  • Width: 1″
• Weight: ≈ 0.25 lb
  
• Packaging: Sold individually (1 unit)
  

Material Compliance and Certifications

• CE Marked: Meets European quality and safety requirements
• RoHS Compliant: Manufactured without certain hazardous substances
• Standards Compliance: Conforms to UL 248‑15 and CSA C22.2 No. 248.15

Where It Works Best

• If you’re running large‑scale VFDs, handling high‑capacity motor loads, managing substantial power distribution systems or protecting critical electrical infrastructure, the JJN‑400 is a dependable choice. It’s tailored to environments where fault currents are strong and equipment is both expensive and essential. Use it when you need a dependable, straightforward fuse solution that won’t compromise under pressure.