Steel City GUV31221 Electrical Lug Terminal Assembly

Steel City GUV31221 is a copper-alloy grounding clamp in ABB’s Steel City commercial fittings line, designed for quick, secure E‑Ground bonding in electrical installations. The clamp’s body components are cast or forged from copper alloy and its U-bolts are stainless steel, delivering durable, corrosion‑resistant connections in service. Marketed as part of ABB’s GUV31221 grounding clamp family, it is an E‑Ground grounding clamp intended for copper grounding conductors in commercial and industrial electrical systems. This model sits within the Steel City catalog of grounding and bonding accessories, reflecting ABB’s approach to combining copper-alloy body parts with stainless‑steel fasteners for reliable earth bonding in both indoor and outdoor environments. Used anywhere a copper grounding conductor must be securely clamped to a grounding point, the GUV31221 supports fast, dependable installations in service entrances, equipment rooms, and other electrical distribution environments where a dedicated grounding connection is required.