Fuse Blocks & Holders



    Jefferson 631-0000-301 View larger

    30A 2P 600V Class CC Fuse Block



    Jefferson Electric 631-0000-301 Replaces Old Model Number 040-0779-000

    This Fuse Block Kit Comes With Mounting Screws & Connection Wires For Installing On Primary Voltage Side Of Jefferson Electric Control Transformers.  


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    • Based On National Electric Code 450.3 The Fuse Sizing Recommended Is Based On The Rated Primary Current Of The Transformer.  Current Less Than 2-Amps Should Be Sized 300% Or The Next Size Smaller.  Current Greater Than 2-Amps But Less Than 9-Amps Should Be Sized 167% Or The Next Size Smaller.  Current Greater Than Or Equal To 9-Amps Should Be Sized 125% Or Next Larger Size.

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