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The NRS150 – GOULD 150A 600V CLASS K5 ONE-TIME FUSE is designed for reliable overcurrent protection in various electrical applications. With a current rating of 150 amps and a voltage rating of 600 volts, this fuse ensures safety and efficiency by providing a one-time blow mechanism for increased reliability and performance.
Not necessarily on a direct swap — Class K5 fuse holders are non-rejection style, meaning they can physically accept Class H and K fuses, but NOT rejection-style Class RK1/RK5 fuses without a holder change. If you're looking to upgrade to a current-limiting fuse, you'll need to replace the holder as well. Contact our team and we can help you find the right upgrade path.
The Gould NRS series is a legacy product line — Northern Breaker Group specializes in hard-to-find and obsolete electrical components, so we maintain stock of fuses like the NRS150 that are no longer in regular distribution. Request a quote and we'll confirm current availability from our inventory.
A one-time fuse like the NRS150 blows immediately on any sustained overcurrent or short circuit and must be replaced after a single operation — it offers no intentional time delay. A time-delay fuse, by contrast, can tolerate brief motor-start inrush currents without blowing. If your application involves motors or other high-inrush loads, a time-delay Class K5 or RK5 fuse may be more appropriate. Our team can help you determine the best fit for your specific application.
