Earth Leakage Relay 772X
Earth Leakage Relay with digital earth leakage current display, healthy and fault indication, variable current and trip time settings, and external CBCT sensing.

Earth Leakage Monitoring with Current Display
The SYCON 772X Earth Leakage Relay continuously monitors earth leakage current using an externally mounted CBCT (Core Balance Current Transformer). Current-carrying cables from single-phase or three-phase supplies are passed through the CBCT. The relay detects the level of earth leakage current and trips the connected system at the set current and after the set time. The 772X also provides healthy and fault indication and displays the earth leakage current.
Designed for Reliable Industrial Operation
Key features of the SYCON 772X.
Solid-state design
Wide operating current range
Low power consumption
Variable current and time setting
Site-settable current and time
Reset facility
Test mode facility
Healthy and fault indication
Earth leakage current display
External CBCT sensing
Suitable for compliance to IE Rule 61-A
Engineering Benefits
That Matter
Designed to support dependable operation and efficient electrical system performance.
Provides continuous monitoring of earth leakage current
Displays the measured earth leakage current
Adjustable current sensitivity supports different protection requirements
Adjustable trip time allows site-specific protection settings
Healthy and fault indication provides clear relay status
Reset and test facilities support operation and testing
Technical Details
Product specifications for engineering evaluation and application selection.
Where It Fits
Typical applications for the SYCON 772X.
Earth leakage protection
Industrial electrical panels
Single-phase electrical systems
Three-phase electrical systems
Electrical systems requiring earth leakage current indication
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Frequently Asked Questions
Answers to common questions about the SYCON 772X.
The SYCON 772X is an Earth Leakage Relay that continuously monitors earth leakage current using an externally mounted CBCT and trips the system at the set current and after the set time.
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SYCON 772X for Your Application?
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