USA: Littelfuse announced the SB6100 Series Industrial Shock-Block, the first and only ground fault circuit interrupter (GFCI) device to meet UL 943C Class C and Class D requirements.
Until now, GFCI devices have not been practical in industrial settings. Thanks to higher trip level standards and advanced filtering technology, industrial workers can finally be protected against dangerous electric shock.
GFCI devices operate by sensing a ground fault and opening the circuit very quickly. However, residential GFCI devices are too sensitive to operate in industrial applications without nuisance tripping. The brand new UL 943C standard covers such GFCI devices, designed to be used with systems up to 600V and higher leakage current higher than residential GFCI devices.
Target applications of industrial GFCI devices include electrical cabinets supplying power to pumps, paint booths, washers, mixers, welding equipment, and any high voltage machinery subject to wet conditions or wash down cleaning. In addition, industrial GFCI devices can be mounted in movable enclosures for flexible use.