AJT45 - 45 Amp Fuse

AJT45 - 45 Amp Fuse

The AJT45 Class J Time-Delay Fuse is built for your electrical systems that see regular startup surges from motors, transformers, and HVAC equipment. When this type of equipment starts up, it usually draws extra current for a short time. The AJT45 is designed to handle those temporary surges without opening too quickly, while still protecting the circuit if an overload or short circuit happens.

Its compact Class J design helps you save space inside control panels and switchboards, which is helpful in installations where space is limited. The fuse also provides current-limiting protection, helping reduce the amount of fault current that moves through the system during a fault condition. That can help you reduce damage to connected equipment, wiring, and controls.

The built-in SmartSpot® visual indicator also helps simplify maintenance. When the fuse opens, technicians can quickly spot the affected fuse and spend less time troubleshooting.

The AJT45 is commonly used in commercial and industrial electrical systems where reliable overcurrent protection is needed during everyday operation. Its time-delay performance, compact size, and high interrupting capacity make it a practical choice for many power distribution applications.

Key Features and Benefits

• Time-delay design helps reduce nuisance openings during startup currents: Helps allow temporary startup surges without unnecessary fuse openings.
• Current-limiting protection helps reduce damage during fault conditions: Helps reduce the amount of fault current moving through the system during a short circuit.
• Compact Class J size helps save panel space: Useful for tighter installations and crowded control panels.
• SmartSpot® visual indicator helps identify opened fuses quickly: Helps simplify troubleshooting and maintenance.
• High interrupting capacity for demanding electrical systems: Designed for commercial and industrial applications requiring dependable fault protection.
• Suitable for AC and DC applications: Supports a wide range of electrical system requirements.
• Ferrule-style construction supports secure installation: Helps maintain dependable electrical connections.
• Commonly used in commercial and industrial electrical systems: Designed for reliable everyday overcurrent protection.
  

Technical Specifications

• Catalog Number: AJT45
  
• Series: AJT – Class J – Time-Delay
  
• Fuse Type: Amp-Trap 2000®
  
• Ampere Rating: 45 Amps
  
• Voltage Rating (AC): 600 VAC
  
• Voltage Rating (DC): 400 VDC
  
• Frequency: 50/60 Hz
  
• Fuse Class: Class J
  
• Characteristic: Time Delay
  
• Interrupting Rating: 200 kA
  
• Mounting Type: Clip Mount
  
• Terminal Type: Ferrule
  
• Terminal Material: Tin-Plated Copper
  
• Indication System: SmartSpot® Visual Indicator
  
• Body Material: GMG
  
• Product Diameter: 27 mm
  
• Product Length: 60.5 mm
  
• Product Weight: 0.0757 kg
  

Material Compliance and Certifications

• Industry Standards: The AJT45 fuse is designed for low-voltage UL and CSA applications and supports IEC Type 2 “No Damage” protection requirements when properly coordinated within electrical systems.
  

Where It Works Best

• The AJT45 is commonly installed in HVAC systems, motor control centers, industrial machinery, transformers, feeder circuits, branch circuits, switchboards, and electrical control panels where temporary startup surges are expected during normal operation.