Cooper Bussmann NO 263 R Fuse Buss Class R Reducer 2.1×1.4×0.8 in

Description

Product Overview

The Cooper Bussmann NO 263 R Fuse is engineered as a Buss Class R reducer, delivering dependable over‑current protection in a compact form factor. Constructed from high‑grade copper alloy contacts and a durable polymer housing, the fuse resists corrosion and maintains performance even in demanding environments. Its dimensions—2.1 x 1.4 x 0.8 inches—and lightweight design (0.8 ounces) allow seamless integration into tight panel spaces, making it an ideal choice for modern electrical distribution systems. The fuse carries a rating that aligns with standard panel specifications, ensuring compatibility with a wide range of breakers and load centers. With a proven track record since its introduction in October 2012, this product has earned a solid reputation among electricians and maintenance professionals for reliability and ease of installation.

Usage

Designed for both residential and commercial applications, the NO 263 R Fuse excels in environments where space is at a premium. It is commonly installed in fuse blocks, breaker panels, and load centers that require a Buss Class R configuration. Whether you are upgrading an older panel, outfitting a new construction project, or performing routine maintenance, this fuse provides a straightforward plug‑in solution that minimizes downtime. Its compact size makes it suitable for tight conduit runs, cramped control cabinets, and equipment racks where larger fuses would be impractical. The fuse’s robust construction also tolerates temperature fluctuations, making it reliable for HVAC systems, lighting circuits, and motor control applications. Users appreciate the quick replacement process: simply pull the old fuse and insert the new one, with no special tools required.

Why Choose Us

Choosing the Cooper Bussmann NO 263 R Fuse means selecting a product backed by decades of industry expertise. Cooper Bussmann, a trusted name in electrical protection, adheres to stringent quality control standards, ensuring each fuse meets or exceeds UL and IEC specifications. The fuse’s design incorporates a low‑resistance path that reduces heat buildup, extending the lifespan of both the fuse and the surrounding circuitry. Additionally, the product is manufactured in the United States, supporting local industry and providing faster supply chain responsiveness. Customer support is a core component of the offering: technical assistance, warranty coverage, and a responsive service team are available to address any installation or performance questions. This commitment to quality and service differentiates the fuse from generic alternatives that may lack rigorous testing or reliable after‑sales support.

Key Features

• Compact dimensions (2.1×1.4×0.8 in) fit into tight panel spaces, saving valuable installation room.
• High‑grade copper alloy contacts provide low resistance and reliable current interruption.
• Durable polymer housing resists corrosion and withstands temperature extremes for long service life.
• Easy plug‑in replacement reduces downtime and requires no special tools.
• Backed by Cooper Bussmann’s U.S. manufacturing and dedicated customer support for peace of mind.

FAQ

What is a Buss Class R reducer fuse?

A Buss Class R reducer fuse is a type of fuse designed to fit into Buss Class R panels, providing over‑current protection while allowing a smaller physical size compared to standard fuses. It maintains the same protective characteristics as larger fuses but occupies less space.

Can this fuse be used in both residential and commercial panels?

Yes, the NO 263 R Fuse is suitable for a wide range of applications, including residential lighting circuits, commercial HVAC systems, and motor control panels. Its rating aligns with common panel specifications, making it versatile for many installation scenarios.

Is the fuse compatible with existing breaker brands?

The fuse conforms to industry standards and is compatible with most major breaker manufacturers that support Buss Class R configurations. Always verify panel specifications before installation to ensure proper fit.

How do I replace a faulty fuse safely?

First, turn off power to the panel at the main disconnect. Using insulated gloves, pull the defective fuse straight out of its holder. Insert the new Cooper Bussmann NO 263 R Fuse, ensuring it seats firmly. Restore power and verify circuit operation.

What warranty does Cooper Bussmann provide?

Cooper Bussmann offers a limited warranty that covers manufacturing defects for a specified period. For detailed warranty terms, consult the product documentation or contact the authorized distributor.