EFCT Series - Earth-Fault Current Transformer

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Sensitive current transformer used to detect ground-fault current. (5-A primary)

Access specifications, certifications, check availability and order parts below

Catalog #
EFCT-1
EFCT-2
EFCT-26

pdf icon EFCT Datasheet

The EFCT series is a sensitive nickel-core current transformer used with Littelfuse relays to detect low levels of earth-leakage current.

pdf icon CT Selection Guide

The Current Transformer (CT) Selection Guide provides assistance in selecting the appropriate CT for each protection relay.

pdf icon 11-1AU Earth-Fault CT Selection Flowchart Australia

EARTH-FAULT-CT SELECTION FLOWCHART...

pdf icon 11-3 Hammond CTs

HAMMOND CT’s...

pdf icon 11-4 Trailing Cable Types

TRAILING CABLE TYPES TECHNICAL INFORMATION...

pdf icon 11-5 Polycast 200 5 CT Test

POLYCAST 200:5 CT TEST TECHNICAL INFORMATION...

pdf icon 11-6 CT-Turns-Ratio Modification

A window-type current transformer is also referred to as a core-balance or flux-balance transformer...

pdf icon 11-8 Ground-Fault Current Transformer Location

A ground fault on a grounded system can be detected using a current-sensitive groundfault monitor...

pdf icon TN CT-01 Ground Fault CT Selection Guide