Description
Product Overview
The Fusetron FRN-R-100 is a high‑performance blade fuse engineered to meet the rigorous demands of industrial and commercial electrical installations. Rated for 250 V and 100 A, this fuse offers a Class RK time‑delay characteristic that allows brief overloads to pass without immediate interruption, protecting sensitive equipment from unnecessary shutdowns. Constructed from durable copper alloy contacts and a robust ceramic body, the fuse ensures consistent performance even in harsh environments. Its compact dimensions—2 × 1 × 0.75 inches—and lightweight design (1.5 lb) make it easy to install in standard fuse holders, while the pack of five provides a convenient stock of replacements for routine maintenance or unexpected failures.
![[Product front view showing all components]](https://www.smallgoods.store/wp-content/uploads/2026/07/311cf0c559ed4806aaf81d45309b4348.jpg)
Usage
Designed for a wide range of applications, the FRN‑R‑100 excels in power distribution panels, motor control centers, and load centers where reliable over‑current protection is essential. It is particularly well‑suited for heavy‑duty machinery, HVAC systems, and commercial lighting circuits that experience occasional surge currents during start‑up. The time‑delay feature helps prevent nuisance tripping in scenarios such as motor inrush currents, allowing the equipment to reach full operating speed before the fuse stabilizes. Installers and maintenance technicians appreciate the clear labeling and standardized dimensions, which simplify replacement procedures and reduce downtime.
When used in conjunction with other Fusetron products, the FRN‑R‑100 contributes to a cohesive protection strategy that safeguards both upstream and downstream components. Its high voltage rating enables it to handle demanding loads, while the 100 A current capacity provides a margin of safety for circuits that may experience occasional peak demands. Whether you are upgrading an existing system or building a new installation, this fuse offers the confidence of proven performance backed by Fusetron’s reputation for quality.
Why Choose Us
Fusetron has a long history of delivering reliable electrical components, and the FRN‑R‑100 is a testament to that legacy. Each fuse undergoes rigorous testing to meet international safety standards, ensuring consistent blow characteristics and long‑term durability. Our commitment to quality is reflected in the precise manufacturing tolerances that guarantee each fuse performs exactly as specified, reducing the risk of premature failure and providing peace of mind for engineers and end‑users alike.
Beyond the product itself, we offer comprehensive technical support and a responsive customer service team ready to assist with selection, installation, and troubleshooting. Our after‑sales service includes detailed datasheets, application guides, and on‑demand engineering assistance, helping you make informed decisions and optimize system reliability. With a global distribution network, we can deliver the FRN‑R‑100 quickly to projects of any scale, ensuring you never run short of critical protection components.
Choosing the Fusetron FRN‑R‑100 means investing in a fuse that combines robust construction, precise performance, and a support ecosystem designed to keep your operations running smoothly. The bulk pack of five further adds value by reducing inventory costs and simplifying stock management for facilities that require multiple replacements over time.
Key Features
- Time‑delay (Class RK) design prevents nuisance trips during motor inrush.
- High voltage rating of 250 V handles demanding industrial loads.
- 100 A current capacity suitable for heavy‑duty applications.
- Durable ceramic body and copper alloy contacts ensure long service life.
- Pack of five provides convenient spares and reduces inventory overhead.
FAQ
What does a Class RK time‑delay fuse do?
A Class RK time‑delay fuse allows short‑duration overloads, such as motor start‑up currents, to pass without blowing. This prevents unnecessary interruptions while still protecting the circuit from sustained over‑current conditions.
Can the FRN‑R‑100 be used in residential applications?
While the fuse is primarily intended for industrial and commercial settings, it can be used in residential applications that require a 250 V, 100 A protection device, provided the installation complies with local electrical codes.
How do I replace a blown FRN‑R‑100 fuse?
First, ensure the power is disconnected. Remove the blown fuse from its holder, inspect the holder for any signs of damage, and insert a new FRN‑R‑100 fuse with the same orientation. Verify the connection and restore power, confirming that the circuit operates normally.
Is there a warranty on the FRN‑R‑100?
Fusetron offers a limited one‑year warranty covering manufacturing defects. For detailed warranty terms, refer to the product documentation or contact our support team.
What are the benefits of buying a pack of five?
Purchasing a pack of five ensures you have immediate replacements on hand, reduces the need for emergency orders, and often provides cost savings compared to buying individual units.





Bussmann ATC Blade Fuse 5A Tan 32V Fast Acting (Pack of 25)
SF214E Thermal Fuse Blade Fuse 10A 250V 216°C Cutoff – Vigor Source
Bussmann BP/ATC-30ID easyID Illuminating Blade Fuse - Green, Pack of 2
Reviews
There are no reviews yet.