Littelfuse SE-400, SE-400 Series, Ground-Fault-Relay Test Unit, 120VAC
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The SE-400 is a ground-fault-relay test unit designed to test current pickup level, time delay and coordination of groundfault protection.
The tester injects current through the window of installed ground-fault current transformers to verify the operation of ground-fault monitors and relays.
It is used on substations, motor control centers (MCCs), central distribution panels, switchboards, and test benches to verify relay operation.
The SE-400 tests the entire ground-fault circuit including current transformers, wiring, ground-fault relay and the operation of the interrupting device. It is recommended to test every relay and its current interrupting device annually.
| Input Voltage | 84-134 Vac, 50/60 Hz, 80 VA |
| Dimensions |
H 219 mm (8.6”); W 99 mm (3.9”); D 143 mm (5.6”) |
| Output Current Settings | 0.5-9.9 A |
| Output Duration Settings | 0.1-9.9 s or continuous |
| Output Voltage | 5.0 Vac maximum |
| Conformally Coated | Standard feature |
| Warranty | 5 Year |
| Mounting | Surface, Panel |