A4J30 - 30 Amp Fuse

A4J30 - 30 Amp Fuse

The Mersen A4J30 Amp-Trap® Class J Fast-Acting Fuse is built for your electrical systems that demand quick, dependable circuit protection in commercial and industrial environments. Rated at 30 amps, this fast-acting fuse responds rapidly to overloads and short circuits, helping you reduce the risk of damage to sensitive equipment and minimizing costly downtime. Its current-limiting design helps control fault energy before it can travel through the system, making it a smart choice for protecting motors, control panels, lighting circuits, HVAC equipment, and other critical power distribution components.

What sets the A4J30 apart is its Class J construction, which uses unique physical dimensions to help prevent replacement with lower-rated fuses that may not provide the same level of protection. This added layer of safety is especially valuable in facilities where maintaining proper overcurrent protection is essential. With a high interrupting rating of 200 kA, the A4J30 is capable of handling demanding fault conditions often found in industrial electrical systems.

Designed with tin-plated copper ferrule terminals and a durable PolyTube body, the fuse offers reliable conductivity and dependable performance in everyday operating conditions. Whether you're installing it in new equipment or using it as a replacement fuse during maintenance, the A4J30 delivers the fast response and consistent protection that electrical professionals expect from the Mersen Amp-Trap® series.

Key Features and Benefits

• 30 amp Class J fast-acting fuse: Designed for dependable overcurrent protection.
• Helps protect electrical systems from overloads and short circuits: Supports reliable circuit protection.
• Fast response time: Helps reduce damage to sensitive equipment.
• Current-limiting design: Helps lower fault energy.
• Unique Class J dimensions: Help prevent incorrect fuse substitution.
• Rated for 600VAC and 300VDC applications: Suitable for AC and DC electrical systems.
• High 200 kA interrupting capacity: Designed for demanding environments.
• Ferrule terminal design: Provides secure installation in compatible fuse holders.
• Tin-plated copper terminals: Provide dependable conductivity.
• PolyTube body: Designed for long service life.
• Suitable for both AC and DC circuits: Supports commercial and industrial electrical applications.
• ROHS compliant: Supports environmental compliance requirements.
  

Technical Specifications

• Manufacturer: Mersen
  
• Catalog Number: A4J30
  
• Series: Amp-Trap® A4J
  
• Product Type: Fast-Acting Fuse
  
• Fuse Class: Class J
  
• Ampere Rating: 30A
  
• Voltage Rating: 600VAC / 300VDC
  
• Frequency: 50/60 Hz
  
• Interrupting Rating: 200 kA AC
  
• Current Type: AC/DC
  
• Mounting Style: Clip
  
• Terminal Type: Ferrule
  
• Terminal Material: Tin-Plated Copper
  
• Body Material: PolyTube
  
• Product Diameter: 20.7 mm
  
• Product Length: 57.2 mm
  
• Product Weight: 0.044 kg
  
• UPC/EAN: 782001960186
  

Material Compliance and Certifications

• ROHS Compliant: Designed to support environmental compliance requirements.
• Low Voltage UL/CSA Applications: Designed for low-voltage UL/CSA fuse applications.
• Suitable for commercial and industrial electrical protection systems: Designed for dependable overcurrent protection.
  

Where It Works Best

• The Mersen A4J30 fuse is commonly used in industrial machinery, motor control centers, HVAC systems, lighting panels, control circuits, and power distribution equipment where fast overcurrent protection is important. It is especially effective in applications that include sensitive electrical components requiring quick interruption during fault conditions to help maintain system reliability and reduce equipment damage.