Mersen fb60j60b3 Class J Fuse Block 60A 600VDC

Product Description

The MERSEN fb60j60b3 is a Class J fuse block from the FB6 series, rated for 60 amps and 600 volts DC. It is designed to house Class J fuses in electrical distribution and overcurrent protection applications. The block features a box terminal connection and mounts on standard DIN rail, making it well suited for panel builds and industrial control enclosures. With a short circuit current rating of 200 kA, it provides robust fault protection in high-demand electrical systems. Licensed electricians and panel builders are the primary installers of this component.

The fb60j60b3 is used in commercial and industrial electrical panels where Class J fuse protection is specified. Its DIN rail mounting simplifies installation in modular enclosure layouts. The 60 A rating and 600 VDC compatibility make it appropriate for DC bus protection in solar inverter systems, battery storage panels, and variable frequency drive installations, as well as standard AC distribution panels operating at 50 or 60 Hz.

Key Features

• Class J fuse block rated at 60 amps and 600 volts DC
• 200 kA short circuit current rating for high-fault-capacity systems
• DIN rail mounting for quick, tool-minimal panel assembly
• Box terminal connection for secure conductor termination
• Glass filled polycarbonate construction for electrical insulation and durability
• Compatible with both 50 Hz and 60 Hz AC systems as well as DC applications

Compatibility

Designed as an OEM-style replacement or new-installation fuse block for Class J fuse holders in commercial and industrial electrical panels requiring DIN rail-mounted, box terminal fuse protection at 60 A and 600 VDC.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). Always de-energize and lock out the panel before installing or replacing the fuse block. Verify that the fuse amperage and class match the circuit protection design before energizing. Do not exceed the 60 A or 600 VDC ratings of the block under any operating condition.

Technical Specifications

• Amperage Rating: 60 A
• Voltage Rating: 600 VDC
• Short Circuit Current Rating: 200 kA
• Fuse Class: J
• Frequency Rating: 50, 60 Hz
• Terminal Type: Box
• Mounting Type: DIN Rail
• Body Dimensions: 2.77 inches H x 4.50 inches W x 4.25 inches L
• Material: Glass Filled Polycarbonate
• Series: FB6

Standard Information

• Brand: MERSEN
• Manufacturer Part Number: fb60j60b3