Industrial Shock Block Ground-Fault Circuit Interrupter protects Personnel from Electrical Shock and Reduces Nuisance Tripping

Littelfuse, Inc. has launched a SB5000 Industrial Shock Block Ground-Fault Circuit Interrupter (GFCI) that is designed to meet the requirements for special-purpose GFCIs as defined by UL 943C for industrial applications and to help protect workers from electrical shock by detecting leakage current and interrupting the circuit for loads up to 60 A. This Shock Block is suitable for many industries such as food and beverage, commercial kitchens, construction, mining, general manufacturing as well as in places where electrical equipment is being used outdoors or in wet environments.

It includes Class C for three-phase systems with 480 V or less and Class D for 600 V systems. The Class A Ground-Fault Circuit Interrupter (GFCI) is for non-dwelling units using plug and cord equipment to meet NEC 210.8(B) for three-phase loads up to 60 A. The Equipment Ground-Fault Protective Device (EGFPD) model is available with adjustable protection set points from 6 mA–100 mA for added flexibility.

Features

• Reduces unnecessary tripping by implementing the inverse time curve defined by UL 943 as well as a DFT filtering algorithm.

• Includes NEMA 4X and IP69K enclosure ratings for all food preparation environments.

• Has advanced ground-check functionality with a two-stage Zener termination option meeting CSA M421 which can identify a crushed cable before the equipment is energized.

Applications

• Commercial kitchens

• Construction

• Mining

• General manufacturing

In addition, this device’s advanced ground check protection functionality monitors the ground wire for continuity, from the Shock Block to the load, to interrupt power or prevent energization of equipment.