GRLE8-01 Earth Leakage Relay 1
GRLE8-01~03 Earth Leakage Relay - Image 2
GRLE8-02 Earth Leakage Relay 2
GRLE8-01 Earth Leakage Relay 3
GRLE8-01 Earth Leakage Relay 4
GRLE8-01 Earth Leakage Relay 5
GRLE8-02 Earth Leakage Relay 3

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.

→ Download GRLE8-01 User Manual

→ Download GRLE8-02 User Manual

→ Download GRLE8-03 User Manual

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Description

Overview

GEYA 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.

GRLE8-01 Wiring Diagram

GRLE8-01 wiring diagram with MN
GRLE8-01 wiring diagram with MN
GRLE8-01 wiring diagram with MX
GRLE8-01 wiring diagram with MX

 

GRLE8-02 Wiring Diagram

GRLE8-02 wiring diagram with MN
GRLE8-02 wiring diagram with MN
GRLE8-02 wiring diagram with MX
GRLE8-02 wiring diagram with MX

 

GRLE8-03 Wiring Diagram

GRLE8-03 wiring diagram
GRLE8-03 wiring diagram
Parameter GRLE8-01 GRLE8-02 GRLE8-03
Function Earth Leakage Relay
Supply Terminals A1-A2
Rated Control Supply Voltage AC 85-265V 50/60Hz
Power Consumption 3VA
Operating Range 30, 100, 300, 500mA & 1, 3, 5, 10, 20, 30A 30mA – 30A
Tripping Value 85% of set value
Tripping Delay Time 0, 0.15, 0.25, 0.5, 1, 2, 3, 5, 7.5, 9s
(N/A when set to 30mA)		 0, 0.15, 0.25, 0.5, 1, 2, 3, 5s
(N/A when set to 30mA)
Reset Time = 2s
Response Time ≤30ms (Trip current ≥ 5x set value)
≤50ms (Trip current = 1x set value)
Hysteresis / Reset Value 85% of trip value 15%
ZCT Detection Open or short circuit
Accuracy Trip: ±5% of set trip current
Time: ±5% ±50ms of set time
Reset Mode Manual / Auto
Output Contacts 1 SPDT (1 C/O) 2 SPDT (2 C/O)
Contact Rating Ith: 10A; AC-15: Ue/Ie: 250V/2.5A
Min Switching Power 500mW
Mechanical / Electrical Life 1×10&sup7; / 1×10⁵ (Resistive load)
Operating Temperature -20°C to +55°C
Mounting 35mm DIN Rail
Protection Degree IP20
Weight 98g 115g 98g
Standards GB/T 14048.2, IEC 60947-2

Frequently Asked Questions

1. What is the GRLE8 Earth Leakage Relay?

The GRLE8 is an industrial-grade protection device designed to monitor and measure residual (leakage) current in single-phase or three-phase electrical systems. It helps prevent electrical shocks and fire hazards caused by earth faults.

2. What functions does it provide?

It provides Type A True RMS measurement via an external Zero Phase Current Transformer (ZCT). It features adjustable tripping delays, detects ZCT wiring faults (open or short circuit), and triggers relay outputs to disconnect power when a dangerous leakage current is detected.

3. What are the key parameters for model selection?

When selecting a model, consider the number of output contacts required (1 SPDT vs. 2 SPDT), the maximum tripping delay time needed (up to 9s or 5s), and whether you prefer step-adjustable current settings (01/02 models) or a continuously adjustable range (03 model).

4. What options are currently available?

We offer three versions:
GRLE8-01: 1 SPDT output, step-adjustable settings, up to 9s delay.
GRLE8-02: 2 SPDT outputs, step-adjustable settings, up to 9s delay.
GRLE8-03: 2 SPDT outputs, continuously adjustable settings (30mA-30A), up to 5s delay, with independent Test and Reset buttons on the panel.

5. What standards does it comply with and which markets is it designed for?

The GRLE8 series strictly complies with GB/T 14048.2 and IEC 60947-2 standards. It is designed for global industrial, commercial, and infrastructure markets requiring reliable, DIN-rail mounted electrical protection.

6. What are the installation precautions?

The device must be installed on a standard 35mm DIN rail. Ensure proper wiring to a compatible ZCT. Important: For life protection purposes, the tripping delay function is automatically disabled when the residual current is set to 30mA. Ensure the operating environment remains between -20°C and +55°C with non-condensing humidity below 95%.

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