Siemens ETU776 - Ground Fault and Current Sensors

112 WL Circuit Breaker Selection and Application Guide
WL Spare/Replacement Parts
Ground Fault and Current Sensors
Catalog number
Modified differential ground fault for source ground return
WLGMDGFCT2 FS2 1200:1 3 phase cradle mount
WLGMDGFCT3 FS3 1200:1 3 phase cradle mount
WLGNMDGCT23 1200:1 1 phase cradle mount
External neutral CT for 4 wire residual ground fault
WLNCT2 3” Without copper bus adapter (pass-thru mount)
WLNCT3 3 – 5” max. bus-bar size Without copper bus adapter (pass-thru mount)
WLNCT2CB For 3” With copper bus adapter for bus connection
WLNCT3CB For 3” – 5” max. bus-bar size With copper bus adapter for bus connection
Neutral Sensor
Neutral Sensor with
Bus Connector
Modified differential CT
Courtesy of NationalSwitchgear.com