Littelfuse is an industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 15 countries, and with 17,000 global associates, they partner with customers to design and deliver innovative, reliable solutions. Serving over 100,000 end customers, their products are found in a variety of industrial, transportation, and electronics end markets—everywhere, every day.
Special-Purpose Ground-Fault Circuit Interrupter (SPGFCI), Class A, Class C and Class D
Industrial Shock Block (ISB) is a personnel protection device designed to meet the requirements for special-purpose GFCIs defined by UL 943C. This standard outlines GFCI classes specifically designed for use in industrial facilities.
Class A GFCI supports 208V with fixed 6mA trip current, meeting NEC 201.8(B) for three-phase loads up to 60A.
Class C GFCIs are intended to be used on three-phase systems where the line-to-line voltage is 480 V or less with a trip level of 20 mA.
Class D GFCIs are intended to be used on 600 V systems.
The Industrial Shock Block includes DFT harmonic filtering, an automatic self-test feature and is compliant to the UL 1998 Software in Programmable Components standard.
PGR-8800 Series - Arc-Flash Relay
The PGR-8800 is a microprocessor-based relay that limits arc-fault damage by detecting the light from an arc flash and rapidly tripping. Phase-current-transformer inputs are provided for current-constrained arc-flash protection and, when so equipped, a programmable definite-time overcurrent function can be enabled. An optical sensor on the PGR-8800 and adjustable trip level reduce the chance of nuisance tripping by setting a threshold for ambient light. Sensors, inputs, and connections are monitored to ensure fail-safe operation. A secondary solid-state trip circuit provides a redundant trip path. A USB port is used for configuration and access to event logs and graphs.
Ground Fault Protection Knowledge Center
Your resource for information and tools to learn about faults and stay protected from its damaging power. Topics Include:
