TJN125 - 125Amp Fuse

TJN125 - 125 Amp Fuse

The TJN125 Class T fuse is engineered for high-performance circuit protection for your demanding electrical systems where speed and fault-current limitation matter most. Designed with a knife-blade style construction, this 125-amp fuse delivers exceptionally fast response times to overcurrent and short-circuit events, helping you protect sensitive equipment, minimize downtime, and reduce the risk of costly electrical damage. Its compact footprint makes it an excellent fit for industrial control panels, switchboards, motor control centers, and commercial power distribution applications where space efficiency and dependable protection are essential. With a 200 kA interrupting rating at 300 VAC, the TJN125 fuse is built to handle high fault currents with confidence while supporting safe and reliable operation in critical environments.

Key Features and Benefits

• Very Fast-Acting Protection: Very fast-acting Class T fuse designed for superior current-limiting protection.
• 125-Amp Rating: 125-amp rating is ideal for industrial and commercial electrical applications.
• High Interrupting Capacity: High interrupting capacity of 200 kA at 300 VAC for enhanced fault protection.
• Knife-Blade Design: Knife-blade style design allows for secure installation and dependable conductivity.
• Non-Indicating Construction: Non-indicating fuse construction suited for streamlined system configurations.
• Compact Footprint: Compact dimensions help maximize panel and equipment space.
• Equipment Protection: Helps protect transformers, drives, power supplies, and other sensitive electrical equipment from damaging overcurrents.
• Reliable Performance: Engineered for reliable performance in high-demand electrical systems.
  

Technical Specifications

• Part Number: TJN125
  
• Fuse Type: Class T Fuse
  
• Series/Type: TJN
  
• Amperage: 125A
  
• Voltage Rating: 300 VAC
  
• Interrupting Rating: 200 kA @ 300 VAC
  
• Style: Knife-Blade
  
• Indication: Non-Indicating
  
• Acting Speed: Very Fast-Acting
  
• Dimensions:
  • Height: 2.437 in.
  • Width: 1.062 in.
  • Depth: 1.062 in.

Material Compliance and Certifications

• Industry Standards: The TJN125 fuse is designed for demanding electrical protection applications and meets industry standards for performance, safety, and reliability in commercial and industrial environments.
• Current-Limiting Construction: Its current-limiting Class T construction supports enhanced equipment protection and coordinated electrical system performance.
  

Where It Works Best

• The TJN125 is a strong choice for applications that require rapid overcurrent protection and high interrupting capacity in a compact format. Common uses include industrial machinery and automation systems, motor control centers and distribution panels, UPS systems and power conditioning equipment, commercial electrical service equipment, transformer and capacitor protection, and critical power and energy distribution systems.
  

Built for speed, precision, and dependable circuit protection, the TJN125 Class T fuse is an excellent solution for safeguarding modern electrical infrastructure while helping maintain operational continuity.