GRI8-IW1 AC/DC Current Monitoring Relay 2mA-500mA

GRI8-IW1 AC/DC Current Monitoring Relay Product Highlight：

Modular Range Coverage, One Device for All Scenarios

Featuring a pioneering modular design, the GRI8-IW1 AC/DC Current Monitoring Relay effortlessly covers a full 2mA-500mA range by swapping front-end modules (E1/E2/E3). It supports three adjustable range settings, with precise monitoring in the mA range (2-500mA). From delicate instruments to high-power equipment, a single GRI8-IW1 meets diverse application needs.

True RMS Technology for Accurate Measurements

Equipped with True RMS technology, it precisely captures current from non-linear loads such as inverters and rectifiers, with a measurement accuracy of ≤5%. It eliminates false triggers caused by motor startup surges or other interferences, ensuring stable system operation.

Dual-Core Independent Protection with Safety Redundancy

The GRI8-IW1 AC/DC Current Monitoring Relay features two SPDT (Single Pole Double Throw) contact groups for independent control of overcurrent and undercurrent thresholds.

1. Supports flexible switching between normally open and normally closed configurations.
2. A 5-bit dip switch (SW1-SW5) locks protection logic, preventing accidental parameter changes or tampering, providing physical-level security.

Multiple Safety Protection Mechanisms

1. Intelligent Anti-Conflict Protocol: Automatically alarms (dual LED flashing) and resets relay contacts if the undercurrent threshold exceeds the overcurrent threshold, preventing configuration errors.
2. Supports 120% continuous overload capacity for harsh conditions and a 150% 1-second surge resistance to handle instantaneous overcurrents like motor stalls.

Millisecond-Level Response with Industrial-Grade Protection

Adjustable delay from 0.3s to 30s (±10% accuracy) precisely matches motor thermal characteristic curves, avoiding premature or delayed responses. A 5%-50% hysteresis range prevents frequent start-stop cycles, protecting equipment from damage.

Streamlined Maintenance and Diagnostic System

A tri-color LED matrix provides clear status indication: green for power status, yellow for contact operation, and red for fault lock. The innovative mode memory function saves parameters via dip switches, eliminating the need for resetting after power loss. Maintenance personnel can quickly diagnose issues, minimizing downtime.

Application Scenarios：

The GRI8-IW1 AC/DC Current Monitoring Relay is widely used in motor protection, pump station monitoring, lighting systems, and automated production lines. Whether for overload protection in factory equipment or precise current monitoring in laboratories, it delivers reliable performance. It is particularly suited for applications requiring high-precision mA-level monitoring, such as medical equipment or renewable energy systems.