Schneider Electric T100777 Fused Disconnect Switch

Schneider Electric’s T100777 is a three-fuse Square D H-30-SV Series D2 fused disconnect switch. It integrates a manual disconnect with three fuses in a single enclosure, providing circuit isolation and fusible protection for equipment in industrial control panels and electrical distribution. The T100777 identifies a 3-fuse configuration within the H-30-SV family, part of Schneider Electric’s Square D safety-switch lineup. With the Square D branding, this device aligns with common panel-building practice where a pre-fused disconnect is needed in a compact form factor. Users rely on this arrangement to simplify installations, enable straightforward maintenance procedures, and provide a clearly accessible disconnect for servicing the circuit.