Mersen 61008sj Class J Fuse Block 100A 600V 3 Pole

Product Description

The MERSEN 61008sj is a 3-pole, Class J fuse block rated for 100 amps and 600 volts AC/DC. It is designed to house all Class J fuses in the 0-600A range and is built for use in industrial and commercial electrical distribution panels. The block features spring reinforced fuse clips made of high-conductivity tin-plated copper and accepts a box side-clip connector for termination. Insulators are constructed from either molded glass-filled polycarbonate or phenolic material, with a verified dielectric strength exceeding 2500 volts. Licensed electricians install this component in enclosed panels and motor control centers.

The 61008sj belongs to Mersen's 6SJ Series, which is engineered to be more compact than traditional Class J fuse block offerings. The unique adder block configuration supports multi-pole field assembly, making it well suited for applications where panel space is limited. It accepts stranded or solid copper or aluminum wire through a choice of screw, pressure plate, box, or special-order stud connectors. This block is appropriate for residential service equipment, commercial switchgear, and industrial control panels where Class J fusing is specified.

Key Features

• Spring reinforced, high-conductivity tin-plated copper fuse clips for secure fuse retention
• Accommodates all Class J fuses rated 0-600A at 600V AC/DC
• 3-pole configuration with box side-clip connector termination
• Compact 6SJ Series design with adder block configuration for multi-pole field assembly
• Glass-filled polycarbonate or phenolic insulators with dielectric strength exceeding 2500 volts
• Compatible with stranded or solid copper or aluminum wire

Compatibility

Designed as an OEM-style replacement or new-installation fuse block for Class J fuse applications in 600V electrical distribution systems.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code. Disconnect and lock out all power to the panel before removing or installing any fuse block. Verify that wire gauge and connector type are appropriate for the circuit load before making terminations. Do not exceed the 100A or 600V ratings of this block under any operating condition.