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The NRS80 – Gould 80A 600V Class K5 One-Time Fuse is a reliable solution for protecting electrical circuits in high-demand applications. Designed for one-time use, this fuse ensures quick disconnection during overloads, safeguarding your equipment from potential damage. Ideal for commercial and industrial environments, it delivers peace of mind and operational efficiency.
Yes — Class K5 fuses share the same physical dimensions as Class H cartridge fuses (2-inch body for the 80A/600V rating), so the NRS80 will fit standard Class H holders. However, always verify your holder and equipment are rated for 600V and at least 80A before installing. If you're unsure, send us your holder or disconnect model and we'll confirm compatibility.
No. Class K5 fuses like the Gould NRS80 are not current-limiting. They are one-time (non-renewable) fuses with a 10kA interrupting rating at 600V. If your system requires a current-limiting fuse — such as Class J, Class L, or Class RK1/RK5 — the NRS80 is not a suitable replacement. Check your original equipment documentation or contact us if you need help identifying the correct fuse class for your application.
The Gould brand was absorbed by Ferraz Shawmut (now Mersen), and many NRS series fuses are considered obsolete or hard to find through standard distribution channels. Northern Breaker Group specializes in sourcing obsolete and hard-to-find fuses like the NRS80 for Canadian customers. Contact our Calgary, Edmonton, or Vancouver counters or request a quote online — we'll do our best to locate stock for you.
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