SE-400 Series

Ground-Fault-Relay Test Unit

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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.

Features & Benefits

  • Adjustable Current Setpoint

    Current range is 0.5 to 9.9 A

  • Adjustable Time Duration Setpoint

    Duration range is 0.1 to 9.9 s, or continuous output

  • Small Form Factor

    Lightweight and compact for portability

  • Remote Test Input

    Allows test to be initiated from another location

SE-400 Datasheet

SE-400 Manual


  • 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

Ordering Information

SE-400120 VAC