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The NRS10 – GOULD 10A 600V CLASS K5 ONE-TIME FUSE offers reliable protection for your electrical circuits. Designed to handle overloads and short circuits, this fuse ensures safety by interrupting the flow of excess current. Ideal for various applications, it’s a dependable choice for maintaining optimal performance in your systems.
No. The NRS10 is a one-time (non-renewable) fuse, meaning the internal element is permanently destroyed when it operates. Once it clears a fault or overload, the entire fuse must be replaced — it cannot be rewired, reset, or reused. Always keep spare NRS10 fuses on hand to minimize downtime.
The Gould NRS series is considered a legacy/obsolete product line. Common cross-references include the Bussmann NOS-10 and Ferraz Shawmut equivalents in Class K5, 10A, 600V ratings. Northern Breaker Group specializes in hard-to-find and obsolete fuses — contact us for current stock availability and compatible alternatives.
Both are 600V fuses, but they differ in interrupting rating and let-through energy. Class K5 fuses like the NRS10 are rated at 50kA (note: this unit carries a 10kA IR), while Class K1 fuses offer higher interrupting capacity and lower let-through energy. The class must match what your fuse holder and equipment are rated and listed for — substituting a different class without verifying compatibility can void equipment listings and compromise protection. Check your equipment documentation or contact us to confirm the correct class for your application.
