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What are the recommended fuses for use with Control Transformer Kit, 9999 CPT1D1, when applied with a 480V primary?

Transformer fusing

Product Line:
LV Transformers

Applies to Industrial Control Transformers by SquareD/Schneider Electric

Overcurrent protection is often required for Industrial Control Transformers

With a 480V primary, 0.5A fuses are recommended, with a maximum rating of 0.52A permitted using the 250% rule of NEC450.3. The fuses are to be
1-1/2 x 13/32`` Class CC rejection type, 600V maximum, time delay fuses (Bussmann Type FNQ-R or equivalent). Qty (2) are required. On the 120V secondary side, a 1.25A fuse is recommended, with a maximum rating of 1.39A permitted according to the 167% rule of NEC 450.3. Provisions are for qty (1) fuse, which must be 1-1/2 x 13/32``, non-rejection type fuse (Bussmann type FNQ or equivalent).

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