GRLE8-01~03 Earth Leakage Relay

True RMS Measurement: Type A residual current detection for accurate monitoring in complex electrical environments.
Wide Operating Range: Adjustable residual current settings from 30mA up to 30A to suit various industrial applications.
Flexible Tripping Delay: Selectable delay times (up to 9s) for precise selective coordination (Delay disabled at 30mA for life protection).
Advanced Diagnostics: Built-in ZCT (Zero Phase Current Transformer) detection for open or short circuit faults.
Multiple Configurations: Available in 1 SPDT (GRLE8-01) or 2 SPDT (GRLE8-02/03) relay output options.
Standard Compliance: Designed for standard 35mm DIN rail mounting, fully compliant with IEC 60947-2.

Description

Overview

UNIDO TRADING LIMITED GRLE8 Earth Leakage Relay is a Type A True RMS protection device designed to monitor and measure residual current in single and three-phase power systems. Featuring adjustable tripping delays and current settings, it ensures optimal electrical safety and equipment protection. By utilizing a Zero Phase Current Transformer (ZCT), it accurately detects leakage currents and prevents potential fire hazards and equipment damage caused by earth faults.

Key Features

Type A True RMS Measurement: Guarantees accurate reading of both sinusoidal AC and pulsating DC residual currents.
ZCT Fault Detection: Automatically detects and alerts for open or short circuits in the connected Zero Phase Current Transformer.
Customizable Protection: Offers selectable tripping delay times and residual current levels to meet specific site requirements.
Convenient Testing & Reset: Equipped with panel buttons and remote capabilities for easy testing and manual/automatic resetting. (GRLE8-03 features independent Test and Reset buttons).
Universal Mounting: Compact design for standard 35mm DIN rail installation, saving space in control panels.

Applications

Ideal for continuous monitoring of electrical installations in industrial plants, commercial buildings, and infrastructure. It is widely used in main distribution boards, motor control centers, and critical power circuits to provide reliable earth fault protection and maintain system continuity.