Bussmann NO2621-R NO.2621-R Fuse Reducer

Bussmann NO.2621-R Fuse Reducer, 100/200-Amp, 250/600V

The Bussmann NO.2621-R Fuse Reducer is a compact adapter component designed to modify fuse clip spacing inside a switch, panelboard, or disconnect so that a smaller fuse can be securely mounted in a larger fuse holder. Carrying a dual 100/200-Amp rating and a 250/600 Volt rating, the NO.2621-R allows a 200-Amp rated fuse clip opening to accept a 100-Amp fuse, giving electrical contractors and maintenance teams a fast, code-conscious way to reduce fuse ampacity without replacing the entire fuse holder, switch, or panel hardware. This reducer is part of Bussmann's "R" series of fuse-clip reducers, a family of adapters built to standardize fuse sizing changes across common industrial and commercial electrical distribution equipment. Because it works directly with existing fuse clip geometry, the NO.2621-R helps simplify retrofit projects, emergency fuse changes, and planned ampacity downsizing on 250/600 Volt rated systems.

Key Features

• Dual Amperage Rating: Rated 100/200-Amp, the NO.2621-R reducer is sized to fit inside a 200-Amp fuse clip opening and adapt it to securely hold a 100-Amp fuse, giving technicians a straightforward way to step down fuse ampacity on demand.
• Dual Voltage Rating: With a 250/600 Volt rating, this reducer is suited for use across common low-voltage industrial and commercial distribution voltage classes found in disconnects, panelboards, and switchboards.
• "R" Series Fuse Reducer: The NO.2621-R belongs to Bussmann's R series of fuse-clip reducers, a model line built specifically to adapt oversized fuse clip openings to smaller fuse dimensions.
• Field-Installable Design: The reducer seats directly into the existing 200-Amp fuse clip, meaning it can be installed in the field without swapping out the fuse holder, disconnect switch, or panelboard hardware.
• Space- and Cost-Saving Solution: Using a fuse reducer instead of replacing an entire fuse holder or switch assembly can shorten downtime and reduce material costs when an ampacity change is required.
• Model Number: Bussmann NO.2621-R is the specific catalog number for this 100/200-Amp, 250/600 Volt reducer, making it easy to specify and reorder for future projects.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Fused Disconnect Switches requiring a smaller fuse than the switch's native clip size
• Panelboards and Switchboards undergoing fuse ampacity changes
• Industrial Power Distribution Equipment maintained by electrical contractors
• Planned Fuse Ampacity Downsizing Projects on 250/600 Volt systems
• Electrical Retrofit, Upgrade, and Maintenance Work where fuse clip hardware must remain in place

Why Bussmann?

Bussmann is a well-established name in circuit protection components, and the NO.2621-R fuse reducer reflects that focus with a clearly defined dual 100/200-Amp, 250/600 Volt rating built for dependable fuse clip adaptation. Specifying a Bussmann reducer instead of an unbranded substitute helps ensure a secure mechanical fit inside the fuse clip, consistent contact, and predictable performance when adjusting fuse ampacity on professional electrical installations. For contractors and maintenance teams who need to downsize a fuse quickly and reliably, the Bussmann NO.2621-R offers a straightforward, purpose-built solution backed by the Bussmann circuit protection product line.