TJS300 - 300Amp Fuse

TJS300 - 300 Amp Fuse

The TJS300 Class T fuse is built for your electrical systems that need fast, dependable protection against overloads and short circuits. Rated at 300 amps with a 200 kA interrupting capacity at 600 VAC, this very fast-acting fuse is commonly used in commercial and industrial power distribution equipment where protecting sensitive components is critical. Its current-limiting design helps reduce the amount of damaging fault energy that reaches downstream equipment, extending the life of connected systems and minimizing unexpected downtime. This fuse features a knife-blade style design for a secure fit and dependable electrical contact. The compact size also makes it a practical option for installations with limited panel space. Because it reacts quickly during fault conditions, the TJS300 is often used in systems with transformers, motor controls, UPS equipment, and other applications where rapid circuit protection is important. The non-indicating construction keeps the design simple while still delivering reliable performance in demanding environments.

Key Features and Benefits

• 300 amp Class T fuse for commercial and industrial applications: Designed for dependable overcurrent protection in demanding electrical systems.
• Very Fast-Acting Response: Helps protect equipment from damaging fault currents by reacting quickly during overload and short-circuit conditions.
• Current-Limiting Design: Reduces thermal and mechanical stress on downstream components by limiting damaging fault energy.
• High Interrupting Capacity: Rated at 200 kA at 600VAC for use in systems with high available fault current.
• Knife-Blade Construction: Provides a secure installation and dependable electrical contact.
• Compact Footprint: Works well in tight electrical enclosures and limited panel spaces.
• High-Performance Protection: Designed for reliable overcurrent protection of sensitive electrical equipment and power distribution systems.
  

Technical Specifications

• Part Number: TJS300
  
• Type: Class T Fuse
  
• Amperage: 300A
  
• Voltage Rating: 600VAC
  
• Interrupting Rating: 200 kA @ 600VAC
  
• Fuse Characteristics: Very Fast-Acting, Current-Limiting
  
• Style: Knife-Blade
  
• Indication: Non-Indicating
  
• Dimensions:
  • Height: 3.625 in
  • Width: 1.593 in
  • Depth: 1.593 in

Material Compliance and Certifications

• Industry Applications: The TJS300 fuse is manufactured for use in high-interrupting-capacity electrical protection applications.
• Class T Standards: It is designed to align with common industry requirements for Class T current-limiting fuses used in commercial and industrial power systems.
  

Where It Works Best

• The TJS300 is commonly used in switchboards and panelboards, motor control centers, industrial machinery and manufacturing equipment, UPS and backup power systems, transformer protection applications, commercial electrical distribution systems, and facilities with high available fault current levels. For applications where fast fault clearing and compact, high-capacity protection are important, the TJS300 Class T fuse is a dependable choice for keeping electrical systems protected and operating safely.