Littelfuse, Inc. Datasheets for Ground Fault Relays

Ground fault relays protect electrical equipment from ground faults. A ground fault is an unintentional current path between a current-carrying conductor and a grounded surface.
Ground Fault Relays: Learn more

Product Name Notes
Operates on AC resistance grounded systems and DC grounded systems.The EL731 is a microprocessor-based AC/DC Sensitive Earth-Leakage Relay that offers complete coverage for all frequencies from 0-6,000 Hz. Two CT’s...
Operates on AC solidly grounded and AC resistance grounded systems.The SE-701 is a microprocessor-based ground-fault relay for resistance and solidly-grounded systems. In addition to common systems, it is uniquely suited...
Operates on AC solidly grounded and AC resistance grounded systems.The SE-703 is a microprocessor-based ground-fault relay for resistance and solidly-earthed systems. It offers sensitive ground-fault detection as low as 25...
Operates on AC solidly grounded and AC resistance grounded systems.The SE-704 is a microprocessor-based ground-fault relay for resistance- and solidly-grounded systems. It offers very sensitive ground-fault detection as low as...
Operates on AC ungrounded systems.The PGR-3200 detects ground faults by continuously monitoring the insulation integrity of ungrounded electrical systems. The relay monitors the insulation for damage and assists with predictive...
Operates on DC ungrounded systems ranging from industrial 24- Vdc control circuits to 1000-Vdc solar and transportation systems. It provides sensitive ground-fault protection without the problems associated with nuisance tripping.
Operates on solidly grounded AC systems.The PGR-4300 Generator Ground-Fault Relay provides a simple method for detecting a ground-fault condition on generators without the need for current transformers (CTs). This greatly...
The EL3100 is a self-powered ground-fault and phasevoltage indication system for 3-phase systems. The EL3100 meets the National Electrical Code (NEC) and the Canadian Electrical Code (CEC) requirements for ground...
The EL731 is a microprocessor-based AC/DC Sensitive Earth-Leakage Relay that offers complete coverage for all frequencies from 0-6,000 Hz. Two CT’s are required for the entire frequency range, or one...
The PGR-3100 indicates the presence of voltage on each phase of a three-phase system. The LEDs on the panel illuminate when voltage is present. When a ground-fault occurs, the voltage...
The PGR-4700 sensitive ground-fault relay provides sensitive ground-fault protection without the problems associated with high-sensitivity nuisance tripping. It detects very lowlevel leakage current on large circuits to avoid or significantly...
The PGR-6101 combines the features of a ground-fault protection relay and insulation monitor into one unit. It protects against ground faults by monitoring insulation resistance when the motor is de-energized...
The SE-502 Ground-Fault Ground-Continuity Detector provides Class-A GFCI trip level and trip times for personnel protection. As little as 5 mA of ground-fault current can be detected, and the internal...
The SE-601 provides sensitive ground fault protection without the problems associated with nuisance tripping. Applications range from industrial 24Vdc control circuits to 800Vdc automated transportation systems. Features/Benefits:• Sensitive 1- to...
The SE-701 is a microprocessor-based ground-fault relay for resistance- and solidly-grounded systems. In addition to common systems, it is uniquely suited for use on systems with significant harmonic content. The...
The SE-703 is a microprocessor-based ground-fault relay for resistance- and solidly-earthed systems. It offers sensitive ground-fault detection as low as 25 mA and can be used on systems with significant...
The SE-704 is a microprocessor-based ground-fault relay for resistance- and solidly-grounded systems. It offers very sensitive ground-fault detection as low as 10 mA and can be used on systems with...