TR40R - 40 Amp Fuse

TR40R - 40 Amp Fuse

The TR40R Class R Fuse is built for electrical systems that can’t afford unnecessary downtime. When equipment starts up, temporary power surges are normal—but that doesn’t mean your protection device should trip every time a motor kicks on. That’s where the TR40R shines. This 40 Amp time-delay fuse is designed to handle inrush currents while still delivering fast, dependable protection against overloads and short circuits. Its current-limiting Class R construction helps reduce potential damage during fault conditions, making it a smart choice for commercial and industrial applications where protecting valuable equipment is a priority. With a high 200 kA interrupting rating at 250V AC, the TR40R delivers the confidence that electricians, maintenance teams, and facility operators look for in demanding environments.

Key Features and Benefits

• 40 Amp Protection: Provides dependable protection for commercial and industrial electrical systems.
• Time-Delay Performance: Helps prevent nuisance fuse openings during motor startup and temporary surges.
• Current-Limiting Class R Design: Helps reduce damage caused by high fault currents.
• High Interrupting Capacity: 200 kA interrupting capacity at 250V AC supports high-performance protection requirements.
• Cartridge-Style Construction: Allows for simple installation and replacement.
• Non-Indicating Design: Suitable for a wide variety of circuit protection applications.
• Compact Size: Makes it easier to fit into crowded panels and electrical assemblies.
  

Technical Specifications

• Part Number: TR40R
  
• Fuse Type: TR
  
• Amperage: 40A
  
• Voltage Rating: 250V AC
  
• A.I.C. Rating: 200 kA @ 250V AC
  
• Fuse Class: Class R Current-Limiting
  
• Operation Type: Time-Delay
  
• Indication Type: Non-Indicating
  
• Style: Cartridge Fuse
  
• Dimensions:
  • Height: 3.0 in.
  • Width: 0.81 in.
  • Depth: 0.81 in.
• Ship Weight: N/A
  

Material Compliance and Certifications

• Electrical System Compatibility: The TR40R fuse is designed for use in electrical distribution and branch-circuit protection systems that require dependable overcurrent protection.
• Current-Limiting Protection: Its Class R current-limiting design supports enhanced protection for connected equipment when installed in accordance with applicable electrical codes and system requirements.
• Installation Guidance: Always confirm compatibility with your equipment and application specifications before installation.
  

Where It Works Best

• The TR40R is a great fit for motor circuits, HVAC systems, industrial control panels, manufacturing equipment, transformers, and commercial electrical distribution systems where temporary startup surges are common. It’s especially useful in environments where minimizing downtime and protecting expensive electrical equipment are top priorities.