Mersen Class J Fuse Base, 600V 100A 3-Pole Tin-Plated Box Connector

Mersen Class J Fuse Base, 600V 100A 3-Pole Tin-Plated Box Connector

The Mersen Class J Fuse Base is a 600V, 100A, 3-pole fuseholder engineered for use with AJT, A4J, and HSJ Class J fuses, featuring high-conductivity tin-plated copper clips with spring-reinforced construction and a box-type wire connector suited to stranded or solid copper or aluminum conductors. Built around a molded glass-filled polycarbonate (GFPC) insulating body verified to a dielectric strength in excess of 2500V, this fuse base is CSA certified and UL listed, making it a dependable choice for industrial and commercial power distribution equipment where consistent, code-compliant fuse protection is required. The 3-pole configuration allows multiple circuits to be protected from a single mounted assembly, and the reinforced clip design is built to maintain firm fuse contact under demanding load and vibration conditions over the life of the installation.

Key Features

• Amperage Rating: 100A maximum fuse rating for Class J fuseholder applications.
• Voltage Rating: 600V AC/DC rated for use with AJT, A4J, and HSJ Class J fuses.
• Pole Configuration: 3-pole design for multi-conductor circuit protection in a single assembly.
• Wire Connection: Box connector with spring-reinforced clip accommodates a wide range of stranded or solid copper or aluminum conductors.
• Durable Construction: High-conductivity tin-plated copper clips paired with a molded glass-filled polycarbonate (GFPC) insulating body for long-term reliability.
• Torque Rating: 120 lb-in torque rating supports secure, code-compliant terminations.
• Operating Temperature: Rated for a maximum operating and storage temperature of 80°C, with a minimum storage temperature of -25°C.
• Short Circuit Current Rating: 200kA SCCR suited to high fault-current industrial environments.

Certifications & Compliance

• CSA Certified, Class 6225, File 32169
• Meets UL4248 Requirements (Formerly UL512)
• UL Listed, Guide IZLT, File E52283

Technical Specifications

• Country Of Origin: MX
• Frequency: 50/60 Hz
• Installation Mounting: Direct Screw Mount
• Fuse Installation Method: Clip-in
• Storage Temperature Range: -25°C to 80°C
• Product Line: Class J Fuseholders - Class J

Typical Applications

• Industrial and Commercial Power Distribution Panels
• Motor Control Centers and Switchgear Assemblies
• Class J Fuse Protection for AJT, A4J, and HSJ Fuses
• Multi-Pole Segmented Fuse Block Assemblies
• High Fault-Current Circuit Protection Applications

Why Mersen?

Mersen Class J fuse bases combine high-conductivity tin-plated copper clips, spring-reinforced clip design, and a GFPC insulating body verified to over 2500V dielectric strength for dependable, code-compliant fuse protection. Backed by CSA certification and UL listing to UL4248, this fuse base delivers the reliability and consistent performance professional electricians expect for critical power distribution work.