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    Class H Fuses

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    Class H fuses for high class protection.

    Class H fuses are a non-current limiting fuse with current ratings up to 600A, and with voltage ratings of either 250V or 600V. As a non-current limiting fuse, Class H fuses only trip after about one and a half cycles, as opposed to current limiting fuses that trip much quicker (about a half cycle). They are commonly used for light duty and general purpose applications.

    Renewable or nonrenewable: The choice is yours.

    One of the differentiating factors of Class H fuses is that they can be a one-time fuse or a renewable fuse. A one-time fuse cannot be reset or restored after the element has melted or the mechanism has tripped. The entire fuse must be replaced. A renewable fuse, however, can be restored after operation. Renewable Class H tend to be desirable in commercial and industrial applications that are prone to short circuits and overloads, and are much more cost effective as they do not need to be replaced as frequently.

    It is important to remember however that renewable Class H fuses do require regular maintenance to make sure that the fuse components and element are free of corrosion and damage. While these fuses are renewable, they are more likely to experience damage and are considered more of a fire hazard than their non-renewable counterparts.

    Same-day shipping available
    24-hour emergency support
    Global supplier network
    1-year Warranty

    Discover the Bay Power experience.

    From reconditioned fuses to new fuses, Bay Power has all the Class H fuses you could need right at your fingertips. We proudly stock a vast selection of Bussmann fuses and Bussmann fuse holders, and as one of the industry’s leading fuse manufacturers, you can count on your fuse to be effective, reliable and safe for years to come. Because when you buy fuses with Bay Power, you buy with confidence.

    Request a Quote

    Please fill in the following information or contact us at (800) 699-2980 to request a free quote. Our friendly sales staff would be glad to assist you!

    Why Bay Power

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    Sell to Us

    Fill your wallet, not the landfill.

    Have any old or unused Class H Fuses lying around? Don’t get rid of them just yet. While we stock a wide range of quality electrical products and solutions, both new and reconditioned, we also buy back your unwanted equipment. So, before deciding what to do with your old Class H Fuses and components, have one of our expert technicians take a look to see if we can save a few parts, save the environment, and save you some cash.

    Sell to Us



    Great service shouldn’t end after the purchase. We pride ourselves on the relationships we build with our customer-first mentality and the quality of our Class H Fuses and components. That’s why we offer a 1-year replacement warranty on all of our electrical products and solutions from the top manufacturers. Because when you buy with Bay Power, you buy with confidence.

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    Buying Options

    Product Condition FAQ

    We are proud to stock a variety of competitively priced, new and reconditioned components from the leading manufacturers of Class H Fuses.


    Thanks to our extensive inventory of Class H Fuses and components, our resourceful and expertly trained staff will always be able to get the products that you need. Through our extensive network of suppliers, we are able to carry and acquire a huge variety of electrical products and solutions, so chances are if you need it, we can get it.


    Bay Power’s priority is providing you with reliable, high quality electrical hardware. That’s why our mission is to make sure our reconditioned electrical products and solutions function as perfectly as the day they were built. Because while the quality is high, the cost of Class H Fuses shouldn’t be.

    New Surplus

    Our selection of new surplus Class H Fuses may not arrive brand new in a box, but they function just as well, and have never had electricity run through them. All of the quality, none of the packaging, always with our 1-year replacement warranty.