Bussmann NO616-R NO.616-R Class R Fuse Reducer

Bussmann NO.616-R Class R Fuse Reducer, 60-Amp, 600 Volt

This Bussmann Class R Fuse Reducer is designed to adapt a 100-Amp fuseholder or fuse block down to accept a 60-Amp Class R fuse, giving electrical contractors and maintenance teams a straightforward way to right-size an existing 100-Amp fuse mounting without replacing the entire fuseholder, switch, or panel assembly. Rated 60-Amp and 600 Volt, this reducer is intended for use in industrial and commercial power distribution equipment where Class R fuse protection is specified, and it is a practical solution any time equipment loads are downsized but the original fuseholder hardware remains 100-Amp rated. By stepping the opening down from 100-Amp to 60-Amp, the reducer helps maintain proper fuse clip engagement and a rejection-style fit, so that only a correctly sized Class R fuse can be installed in the modified opening. This supports safe, code-compliant overcurrent protection while avoiding the cost and downtime of swapping out fuseholder hardware.

Key Features

• Amperage Reduction: Steps a 100-Amp fuseholder or fuse block down to accept a 60-Amp fuse, allowing a smaller Class R fuse to be used in an existing 100-Amp mounting without hardware replacement.
• Voltage Rating: 600 Volt rating supports use across a wide range of commercial and industrial power distribution circuits.
• Amperage Rating: 60-Amp rating is sized for coordinated overcurrent protection at the reduced fuse opening.
• Class R Rejection Fit: Reducer opening is sized specifically for Class R fuses, helping ensure only the correct fuse class and amperage can be installed.
• Retrofit Solution: Eliminates the need to replace an entire fuseholder, fuse block, or disconnect switch when stepping down from a 100-Amp mounting to a 60-Amp fuse.
• Space-Saving Design: Allows existing 100-Amp equipment to remain in service while accommodating downsized loads that only require 60-Amp, 600 Volt Class R fuse protection.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Industrial and Commercial Power Distribution Equipment
• Fuse Panel, Switchboard, and Disconnect Switch Retrofits
• Motor Control Center Overcurrent Protection
• Downsizing 100-Amp Fuseholders for Reduced Electrical Loads
• Panelboard Maintenance and Fuse Class Standardization

Why Bussmann?

Bussmann is a trusted name in circuit protection, and this Class R fuse reducer is built to the fit and rejection standards required for reliable, code-compliant fuse installations. Choosing a Bussmann reducer helps ensure proper fuse clip engagement and consistent, dependable performance when adapting a 100-Amp fuseholder down to a 60-Amp Class R fuse. For electricians and facility teams standardizing on Class R fuse protection, a Bussmann reducer offers a straightforward, code-compliant way to match existing 100-Amp hardware to a 60-Amp, 600 Volt fuse requirement without a full equipment replacement.