Product Description
The Littelfuse SE-105/SE-107 is a combination ground-wire monitor and ground-fault relay for resistance-grounded systems. It continuously monitors the integrity of the ground conductor to protect portable equipment from hazardous voltages caused by ground faults. The SE-105/SE-107 is an excellent choice for trailing cables 5 kV and under in underground mining applications.
The SE105 has a 120 VAC Supply Voltage. Autoreset GC; Latching GF modes and is suitible for Resistance Grounded AC systems. IEEE Device Numbers - Checking or Interlocking Relay (3GC), Ground Fault (50G/N, 51G/N).
| FEATURES | BENEFITS |
| Adjustable pickup (0.5, 2.0, 4.0 A) | Unit can be used on a wide variety of trailing cable applications |
| Adjustable time delay (0.1-2.0 s) | Adjustable trip delay for quick protection and system coordination |
| Harmonic filter | Prevents false operation |
| Zener-characteristic termination assembly | Provides reliable ground-check loop verification |
| Fail-safe ground-check circuit | Ensures ground-check circuit remains safe even in the event of equipment failure |
| Conformal coating | Additional coating protects circuit boards against harsh environment |
| Selectable UV- or shunt-trip mode | Provides flexibility for different applications |
CSA certified, UL Listed (E340889)
SE-105 Manual
SE 105 & 107 Datasheet
SE-105 CAD Drawing