TJS900 - 900 Amp Fuse

TJS900 - 900 Amp Class T Fuse

When your electrical systems are exposed to high fault currents, every fraction of a second matters. The TJS900 Class T fuse is built to respond fast—really fast—helping protect critical equipment before damaging overloads and short circuits can spread through your system. With a 900 A rating and an impressive 200 kA interrupting capacity at 600 VAC, this fuse is a trusted choice for demanding industrial and commercial applications where downtime isn't an option.

Designed with a compact knife-blade style body, the TJS900 delivers serious protection without taking up unnecessary space inside your electrical equipment. Its very fast-acting, current-limiting design helps reduce thermal stress and mechanical damage to downstream components, making it especially valuable for protecting sensitive electrical systems, transformers, drives, and power distribution equipment. Whether you're maintaining an existing system or upgrading critical infrastructure, this Class T fuse offers the speed, performance, and reliability professionals depend on every day.

Key Features and Benefits

• 900 Amp Rating: is designed for high-capacity electrical distribution systems
• 200 kA Interrupting Capacity at 600VAC: helps safely clear high fault-current conditions
• Very Fast-Acting Protection: reduces the risk of equipment damage during overloads and short circuits
• Current-Limiting Fuse Design: helps minimize thermal and mechanical stress on connected components
• Compact Class T Construction: saves valuable panel and equipment space
• Knife-Blade Style Terminals: support secure installation and reliable conductivity
• Non-Indicating Configuration: offers a simple, streamlined fuse solution
• Helps improve overall system uptime and long-term equipment protection
  

Technical Specifications

• Part Number: TJS900
  
• Fuse Class: Class T
  
• Type: TJS
  
• Amperage Rating: 900 Amps
  
• Voltage Rating: 600 VAC
  
• Interrupting Capacity: 200 kA @ 600 VAC
  
• Fuse Style: Knife-Blade
  
• Fuse Operation: Very Fast-Acting
  
• Indication Type: Non-Indicating
  
• Current Limiting: Yes
  
• Dimensions:
  • Height: 5.271 in
  • Width: 2.652 in
  • Depth: 2.652 in

Material Compliance and Certifications

• Industry Applications: The TJS900 fuse is manufactured for use in demanding commercial and industrial electrical systems where dependable overcurrent protection is essential.
• Class T Fuse Performance: Class T fuses are widely recognized for their compact footprint, high interrupting ratings, and fast-clearing performance in applications that require enhanced equipment protection.
• Installation Standards: Installation should always comply with applicable NEC standards and manufacturer recommendations.
  

Where It Works Best

• The TJS900 performs exceptionally well in electrical systems where high available fault currents and sensitive equipment protection go hand in hand. It's commonly used in industrial facilities, manufacturing plants, commercial buildings, switchboards, motor control centers, panelboards, transformers, UPS systems, and heavy-duty power distribution equipment. Its very fast-acting response makes it especially effective in environments where protecting expensive electrical components can help reduce costly downtime and maintenance interruptions.