TJN450 - 450 Amp Fuse

TJN450 - 450 Amp Fuse

The TJN450 Class T Fuse delivers dependable overcurrent protection for your commercial and industrial electrical systems that demand fast response times and high interrupting capacity. Rated at 450 amps with a 200 kA interrupting rating at 300VAC, this fuse is built to quickly clear fault conditions and help protect connected equipment from costly electrical damage. Its very fast-acting, current-limiting design helps you to reduce let-through energy during short circuits, making it a smart choice for protecting sensitive electrical components and high-demand power distribution systems.

Designed with a compact knife-blade style body, the TJN450 installs easily into compatible Class T fuse holders and switchgear assemblies. The non-indicating construction keeps the design simple and reliable while maintaining strong performance in space-conscious applications. Whether used in manufacturing facilities, control panels, or power distribution equipment, this fuse provides the high-speed protection needed to keep systems operating safely and efficiently.

Key Features and Benefits

• 450 amp Class T fuse: For high-capacity circuit protection.
• Very Fast-Acting Response: Helps reduce equipment damage during faults.
• Current-Limiting Design: Lowers the let-through current during short circuits.
• 200 kA Interrupting Capacity at 300VAC: Suitable for demanding electrical systems.
• Compact Footprint: Helps save valuable panel space.
• Knife-Blade Style Construction: Provides secure installation.
• Non-Indicating Design: Allows for straightforward operation.
• Protects Sensitive Equipment: Helps safeguard sensitive electrical and power distribution equipment.
  

Technical Specifications

• Part Number: TJN450
  
• Type: Class T Fuse
  
• Amperage: 450A
  
• Voltage Rating: 300VAC
  
• Interrupting Rating: 200 kA @ 300VAC
  
• Fuse Style: Knife-Blade
  
• Acting Speed: Very Fast-Acting
  
• Indication: Non-Indicating
  
• Current Limiting: Yes
  
• Dimensions:
  • Height: 3.062 in
  • Width: 1.593 in
  • Depth: 1.593 in

Material Compliance and Certifications

• Application Compliance: The TJN450 is manufactured for use in electrical protection applications requiring reliable current-limiting Class T fuse performance.
• Installation Guidelines: Installation should follow applicable NEC requirements, local electrical codes, and manufacturer guidelines for compatible equipment.
  

Where It Works Best

• Industrial power distribution systems
• Motor control centers
• UPS and backup power systems
• Manufacturing equipment
• Commercial electrical panels
• Control panels with sensitive downstream components
• High fault-current applications requiring fast overcurrent protection