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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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Description
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.