Mersen Class J Fuse Base, 600V 60A, 3-Pole

Mersen 60603J Class J Fuse Base, 600V 60A, 3-Pole

The Mersen 60603J is a Class J fuse base rated 600V and 60A, built in a 3-pole configuration with a tin-plate aluminum box for reliable, code-compliant overcurrent protection. Designed for use with AJT, A4J, and HSJ Class J fuses, this fuse base carries a 200 kA short circuit current rating (SCCR) and is UL Listed and CSA Certified, meeting the requirements of UL4248 (formerly UL512) for demanding industrial and commercial electrical distribution applications.

Key Features

• Ampere Rating: 60A maximum fuse rating for Class J fuse protection.
• Voltage Rating: 600V AC/UL and 600V DC/UL for demanding power distribution circuits.
• Durable Construction: Tin-plate aluminum box with a GFPC insulating body material for long-term reliability.
• 3-Pole Configuration: Supports three-phase circuit protection in a single, compact fuse base.
• Fuse Compatibility: Class J (600V) blocks designed for use with AJT, A4J, and HSJ fuses.
• Installation: Clip-in fuse installation method with direct screw mounting, box wire connections, and a 45 lb-in torque rating.
• Operating Range: Rated for operating and storage temperatures up to 80°C and down to -25°C at 50/60 Hz.
• High SCCR: 200 kA short circuit current rating for enhanced fault-current protection.

Certifications & Compliance

• UL Listed, Guide IZLT, File E52283
• CSA Certified, Class 6225, File 32169
• Meets the requirements of UL4248 (formerly UL512)

Technical Specifications

• Ampere Rating: 60 A
• Body Insulating Material: GFPC
• Country Of Origin: MX
• Frequency Hz: 50/60 Hz
• Fuse Installation Method: Clip-in
• Installation Mounting: Direct Screw Mount
• Max Fuse Rating: 60 A
• Max Operating Temp: 80 °C
• Max Storage Temp: 80 °C
• Min Storage Temp: -25 °C
• Product Line: Class J Fuseholders - Class J
• Rated Voltage Ac Ul: 600 V
• Rated Voltage Dc Ul: 600 V
• Short Circuit Current Rating Sccr: 200 kA
• Torque Rating: 45 lb-in
• Wire Connections: Box

Typical Applications

• Industrial and Commercial Power Distribution Panels
• Motor Control Centers and Switchgear
• Three-Phase Circuit Overcurrent Protection
• Panelboard and Load Center Fuse Mounting
• Renovation and New Construction Electrical Systems

Why Mersen?

Mersen Class J fuse bases combine a durable tin-plate aluminum box with a GFPC insulating body to deliver dependable performance in demanding power distribution environments. Backed by UL Listing (Guide IZLT, File E52283) and CSA Certification (Class 6225, File 32169), plus a 200 kA SCCR rating, the 60603J is engineered for code-compliant, professional-grade electrical installations.