NCLR400 - 400 Amp Fuse

NCLR400 - 400 Amp Fuse

Need a 400-amp Class R fuse for a compatible electrical system? The NCLR400 is a cartridge-style, time-delay fuse rated for 400 amps and 600 VAC, with a 200 kA interrupting rating. It's also current-limiting, giving you the combination of specifications needed for demanding electrical applications.

Because this is a time-delay fuse, it can handle temporary current surges without reacting the same way an instantaneous fuse would. That can be important in equipment where brief inrush currents are part of normal operation.

The NCLR400 measures 8.63 inches high, 2 inches wide, and 2 inches deep. If you're replacing an existing fuse, check those dimensions along with the amperage, voltage, Class R designation, and interrupting rating. A fuse can look like the right replacement and still have different electrical characteristics, so matching the complete specification matters.

Key Features and Benefits

• 400 amp capacity for equipment requiring a 400A fuse
• Rated for 600 VAC
• 200 kA interrupting rating
• Time-delay design for applications where temporary current surges may occur
• Current-limiting Class R construction
• Traditional cartridge-style format
• Non-indicating design
• Clearly defined dimensions make it easier to compare against an existing fuse

Technical Specifications

• Part Number: NCLR400
  
• Type: NCLR
  
• Fuse Class: Class R
  
• Amperage: 400 A
  
• Voltage: 600 VAC
  
• A.I.C. / Interrupting Rating: 200 kA
  
• Operation: Time-Delay
  
• Current Limiting: Yes
  
• Style: Cartridge
  
• Indication: Non-Indicating
  
• Dimensions:
  • Height: 8.63 in.
  • Width: 2.0 in.
  • Depth: 2.0 in.

Material Compliance and Certifications

The available NCLR400 specifications did not include material compliance, environmental certifications, or agency listing information. If your installation requires a particular certification or compliance standard, confirm that requirement against the documentation for the exact fuse before installation.

Where It Works Best

The NCLR400 fuse is intended for compatible electrical equipment calling for a 400 amp, 600 VAC, Class R time-delay fuse with current-limiting characteristics.

It can be a practical replacement option when those specifications match the fuse the equipment originally required. Before swapping, check more than amperage. Fuse class, voltage, interrupting rating, time-delay characteristics, and physical size should all match the application requirements.