SE-100T Series - Ground-Fault Relay Tester

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The SE-100T is a ground-fault-relay test unit designed to test the current pickup level of ground-fault 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-100T 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.

Access specifications, certifications, check availability and order parts below

Catalog #Supply
SE-100T120CSA5.9H X 4.3W X 3.9D

pdf icon SE-100T Datasheet

pdf icon SE-100T Manual

The SE-100T is a ground-fault-relay tester for 5-A and 15-A resistance-grounded systems. The SE-100T has an output ammeter, a test pushbutton, low (LO) and high (HI) outputs, and a remote-test input (RMT).

pdf icon SE-100T Manual Spanish

dwg Littelfuse Protection Relays SE 100T CAD Drawing