Square D 9070FB-3A Fuse Block Assembly Class CC

Square D 9070FB-3A is a three-pole transformer fuse block assembly that accepts Class CC fuses for both primary and secondary circuits on industrial control transformers, enabling compact, field‑mounted fuse protection directly on the transformer terminal board under a Fingersafe cover. It is rated for 30 A per pole and accepts Class CC fuses sized 1-1/2 inches long with a 13/32 inch diameter, with two rejection fuse clips for primary fusing and one non‑rejection clip for secondary fusing to support dual‑fuse protection on a single winding. As a Schneider Electric/Square D transformer accessory, the 9070FB3A is designed for field installation on compatible 9070 transformers and is commonly used in control circuits and small power‑distribution applications where both windings require coordinated Class CC protection.