Hubbell Wiring Device-Kellems Surge Protection, Surface Mount, 320kA, 4-Pole, 5-Wire, 277/480V AC

Hubbell Wiring Device-Kellems Surface Mount Surge Protection Device, 320kA, 277/480V AC

The Hubbell Kellems HBL8P320DB is a heavy-duty surface mount surge protective device (SPD) rated for 277/480V AC three-phase power systems. With a 320kA surge current rating and a 4-pole, 5-wire configuration, this unit provides robust transient overvoltage protection for critical electrical equipment in commercial and industrial facilities.

Key Specifications

• Surge Current Rating: 320kA
• Voltage: 277/480V AC
• Poles: 4
• Wires: 5
• Mounting: Surface Mount
• Housing Material: Composite
• Dimensions: 22.44 H x 11.04 W x 7.87 in. D
• Model: HBL8P320DB
• UPC: 78358557029

Compliance & Standards

• UL 1449 3rd Edition
• UL 498

Features & Benefits

• 320kA surge current rating provides high-level transient overvoltage protection
• 4-pole, 5-wire design suitable for 3-phase wye-connected 277/480V electrical systems
• Composite housing offers durable, corrosion-resistant construction
• Surface mount design allows installation at main panels, sub-panels, and distribution equipment
• UL 1449 3rd Edition listed for safety and performance compliance

Applications

Designed for commercial, industrial, and institutional facilities requiring high-performance surge protection on 277/480V three-phase distribution systems. Suitable for protecting sensitive equipment including VFDs, PLCs, HVAC controls, data equipment, and other electronics from transient overvoltages caused by lightning, utility switching, and internal load switching.