AJT150 - 150 Amp Fuse

AJT150 - 150 Amp Fuse

When your electrical systems power up heavy equipment like motors, transformers, compressors, or HVAC units, temporary inrush currents are expected. The AJT150 Class J Time-Delay Fuse is designed specifically for those moments. Instead of opening during normal startup surges, this 150 amp Amp-Trap 2000® fuse allows equipment to start properly while still providing fast, dependable protection against overloads and short circuits. That balance between protection and operational reliability makes the AJT150 a trusted choice in demanding commercial and industrial environments.

One thing electricians and maintenance teams appreciate about the AJT150 is its compact Class J footprint. It delivers high-performance current-limiting protection while taking up significantly less space than many traditional fuse designs, helping free up valuable room inside crowded control panels and switchgear. The built-in SmartSpot® visual indicator also makes troubleshooting easier by providing a quick visual signal when the fuse has opened, helping reduce downtime and speed up maintenance.

The AJT150 is engineered to help you protect expensive electrical equipment from damaging fault energy during short-circuit conditions. By limiting the amount of current that passes through the system during a fault, it can help reduce damage to motors, wiring, transformers, and connected components. Whether installed in a manufacturing facility, HVAC system, motor control center, or industrial automation setup, this fuse is built to deliver reliable overcurrent protection day after day in demanding operating conditions.

Key Features and Benefits

• Time-delay design helps prevent nuisance fuse openings during motor startups and transformer inrush currents: Allows temporary startup surges to pass without unnecessary interruptions.
• Current-limiting protection helps reduce equipment damage during short-circuit events: Helps minimize thermal and mechanical stress on connected electrical systems.
• SmartSpot® visual open fuse indicator allows faster troubleshooting and maintenance: Helps maintenance teams quickly identify opened fuses.
• Compact Class J construction helps maximize panel and enclosure space: Fits well into installations where enclosure space is limited.
• High 200 kA interrupting capacity supports protection in high fault-current environments: Suitable for demanding commercial and industrial applications.
• Suitable for both AC and DC applications: Compatible with a variety of electrical distribution systems.
• Blade-style terminals support dependable electrical connections: Helps maintain reliable conductivity and secure installation.
• Helps support IEC Type 2 “No Damage” coordinated protection requirements when properly applied: Supports coordinated protection strategies within electrical systems.
• Commonly used in industrial, commercial, OEM, and HVAC electrical systems: Suitable for a wide range of demanding electrical applications.
  

Technical Specifications

• Catalog Number: AJT150
  
• Series: AJT – Class J – Time-Delay
  
• Fuse Type: Amp-Trap 2000®
  
• Ampere Rating: 150 Amps
  
• Voltage Rating (AC): 600 VAC
  
• Voltage Rating (DC): 500 VDC
  
• Frequency: 50/60 Hz
  
• Fuse Class: Class J
  
• Characteristic: Time Delay
  
• Interrupting Rating: 200 kA
  
• Mounting Style: Clip or Bolted Mount
  
• Indication System: SmartSpot® Visual Open Fuse Indicator
  
• Terminal Type: Blade
  
• Terminal Material: Brass
  
• Product Diameter: 41.3 mm
  
• Product Length: 146 mm
  
• Body Material: GMG
  
• Product Weight: 0.3465 kg
  

Material Compliance and Certifications

• Industry Standards: The AJT150 fuse is manufactured for low-voltage UL and CSA applications and is designed to support IEC Type 2 “No Damage” protection requirements when properly coordinated within electrical systems.
• Performance Characteristics: Its advanced material technology helps deliver consistent performance and dependable overcurrent protection in demanding commercial and industrial environments.
  

Where It Works Best

• The AJT150 is commonly used in motor control centers, HVAC systems, industrial machinery, manufacturing equipment, transformers, feeder circuits, branch circuits, switchboards, and heavy-duty control panels where temporary startup surges are expected but dependable overcurrent protection remains essential.