Electrical Business

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Littelfuse SB5000 industrial Shock Block ground-fault circuit interrupter

April 11, 2022 | By Anthony Capkun



April 11, 2022 – Available in various models, Littelfuse Inc.’s SB5000 industrial Shock Block GFCI detects leakage current and interrupts the circuit for loads up to 60 A. In addition, the SB5000’s 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, if compromised.

The SB5000 is suitable for industries such as food and beverage, commercial kitchens, construction, mining, general manufacturing, as well as outdoors or in wet environments.

In addition to functions such as a 6-mA trip level for Class A and 20-mA for Class C and D devices, the GFCI reduces unnecessary tripping by implementing the inverse time curve defined by UL 943 (as well as a DFT filtering algorithm), and can identify a crushed cable before equipment is energized.

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