A4J175 - 175 Amp Fuse

A4J175 - 175 Amp Fuse

When your electrical systems are exposed to high fault currents, having the right fuse in place can make all the difference. The Mersen A4J175 Amp-Trap® Class J Fast-Acting Fuse is designed to deliver fast, dependable overcurrent protection for commercial and industrial power systems where reliability matters most. With a 175 Amp rating and support for 600VAC and 300VDC applications, this Class J fuse reacts quickly to short circuits and overload conditions, helping reduce costly equipment damage and unnecessary downtime before problems spread through the system.

Part of Mersen’s trusted Amp-Trap® A4J fuse family, the A4J175 combines advanced current-limiting performance with a compact Class J footprint that helps prevent the installation of lower-rated replacement fuses. That added layer of protection is especially valuable in demanding environments where system uptime and electrical safety are critical. Its blade-style terminals and clip mounting design allow for secure installation, while the durable GMG insulating body and brass alloy terminals are built to perform consistently under heavy electrical loads.

Whether you're protecting motor circuits, industrial machinery, HVAC equipment, or commercial distribution panels, the A4J175 offers the speed and protection needed to help keep operations running smoothly.

Key Features and Benefits

• Fast-acting Class J fuse: Designed for rapid overcurrent protection.
• 175 Amp rating: Suitable for demanding commercial and industrial applications.
• Rated for 600VAC and 300VDC systems: Designed for AC and DC electrical applications.
• Advanced current-limiting design: Helps reduce equipment damage.
• High 200 kA interrupting capacity: Suitable for severe fault conditions.
• Compact Class J dimensions: Help prevent incorrect fuse substitution.
• Blade terminal construction: Supports secure clip mounting.
• Suitable for both AC and DC applications: Designed for multiple electrical system requirements.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A4J175
  
• Series: Amp-Trap® A4J
  
• Fuse Class: Class J
  
• Fuse Type: Fast-Acting
  
• Ampere Rating: 175A
  
• Rated AC Voltage: 600VAC
  
• Rated DC Voltage: 300VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Terminal Type: Blade
  
• Mounting Style: Clip Mount
  
• Terminal Material: Brass Alloy
  
• Body Material: GMG
  
• Diameter: 41.3 mm
  
• Length: 146 mm
  
• Product Weight: 0.342 kg
  
• Product Group: Low Voltage UL/CSA Fuses
  
• AC/DC Rated: Yes
  

Material Compliance and Certifications

• RoHS Compliant: The Mersen A4J175 fuse is RoHS compliant, supporting environmental material standards for modern electrical applications.
  

Where It Works Best

• The A4J175 is commonly used in industrial control panels, manufacturing equipment, motor protection circuits, HVAC systems, commercial electrical distribution systems, switchboards and panelboards, transformer protection, OEM machinery and automation systems, and feeder and branch circuit protection applications.