A4J1 - 1 Amp Fuse

A4J1 - 1 Amp Fuse

The Mersen A4J1 Amp-Trap® Class J Fast-Acting Fuse makes protecting your circuits simple. Rated at 1 amp for 600VAC and 300VDC, it’s ideal for panelboards, motor control centers, and other commercial or industrial systems. Its unique size ensures only the correct fuse can be installed, helping prevent mistakes that could damage equipment.

Built with a durable PolyTube body and tin-plated copper ferrule terminals, the A4J1 delivers reliable conductivity and long-lasting performance. With a 200 kA interrupting capacity, it handles high fault currents with confidence.

Key Features and Benefits

• Fast-acting Class J fuse for overcurrent protection
• 1 amp rating for precise circuit protection
• Rated for 600VAC and 300VDC
• 200 kA interrupting capacity
• Prevents substitution with lower-rated fuses
• Tin-plated copper ferrule terminals
• Durable PolyTube body
• Compact size fits standard clips and holders
• ROHS compliant

Technical Specifications

• Manufacturer Part Number: A4J1
• Product Series: A4J – Class J – Fast-Acting
• Fuse Class: Class J
• Ampere Rating: 1A
• Rated Voltage AC: 600VAC
• Rated Voltage DC: 300VDC
• Frequency: 50/60 Hz
• Interrupting Rating: 200 kA AC
• Terminal Type: Ferrule
• Terminal Material: Tin-Plated Copper
• Mounting Method: Clip
• Body Material: PolyTube
• Product Diameter: 20.7 mm
• Product Length: 57.2 mm
• Product Weight: 0.044 kg
• Sell Pack Quantity: 10
• Compliance: ROHS

Material Compliance and Certifications

• ROHS compliant, this fuse uses a PolyTube insulating body and tin-plated copper terminals to provide reliable, long-lasting protection in industrial and commercial applications.

Where It Works Best

• The A4J1 is perfect for panelboards, motor control centers, and industrial machinery where fast, precise overcurrent protection is needed.