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The NRN25 – Gould 25A 250V Class H One-Time Fuse is designed for reliable overcurrent protection in various electrical applications. With a robust construction, this fuse ensures safe operation, preventing damage to your circuit components. Ideal for residential and commercial use, it provides peace of mind with its dependable performance.
A Class H one-time fuse like the NRN25 is a single-use device — once it blows, the entire fuse must be replaced. A renewable fuse uses a replaceable fuse link inside a reusable body. Both share the same Class H cartridge dimensions and holder, so they are physically interchangeable, but a one-time fuse is generally preferred for more consistent and reliable overcurrent protection. Always replace with the same amperage and voltage rating.
The Gould NRN series has been discontinued as a standalone product line following Gould's acquisition, but Northern Breaker Group specializes in sourcing obsolete and hard-to-find fuses. Direct cross-references include the Bussmann NON-25, Littelfuse NLN-25, and Ferraz Shawmut in the same 25A/250V Class H one-time rating. Contact our team and we'll help you locate stock or confirm the best available equivalent.
Class H one-time fuses like the NRN25 are general-purpose fuses and are not recommended as the primary means of motor branch-circuit protection in most applications. Motors draw high inrush currents at startup that can nuisance-blow a one-time fuse. For motor circuits, a time-delay (dual-element) fuse such as a Class RK5 or Class J time-delay type is typically specified per Canadian Electrical Code requirements. The NRN25 is best suited for protecting resistive loads, lighting circuits, and general branch-circuit applications.
