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The OTN40 – GOULD 40A 250V CLASS K5 ONE-TIME FUSE is a reliable safety solution for your electrical systems. Designed for a maximum current of 40 amps, this one-time fuse provides essential protection against overloads and short circuits. Ensure the longevity and safety of your equipment with this high-performance fuse.
No — the OTN40 is a one-time (non-renewable) fuse, meaning it must be completely replaced once it has operated. Unlike renewable fuses, the element cannot be swapped out. Always replace it with the same rating: 40A, 250V, Class K5 to maintain proper protection.
The Gould OTN series is considered a legacy/obsolete product line. Northern Breaker Group specializes in hard-to-find and obsolete electrical components and can often source OTN40 fuses from verified stock. Contact our Calgary, Edmonton, or Vancouver counters for availability and to request a quote.
A Class RK5 fuse of the same 40A/250V rating is generally an acceptable upgrade since RK5 fuses offer equal or better current-limiting performance and fit the same holders. However, always consult your equipment documentation and a qualified electrician before substituting fuse classes, and ensure your holder is rated for the replacement type.
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