BENDER IR425-D4-1 Insulation Monitoring Device

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BENDER IR425-D4-1 Insulation Monitoring Device

Product Overview

The IR425-D4-1 is a compact insulation monitoring device (IMD) designed for ungrounded AC/DC control circuits (IT systems) with voltages up to 300V. It ensures electrical safety by continuously measuring insulation resistance and triggering alarms when faults are detected, preventing equipment damage and personnel hazards .

Key Features

✅ Advanced Insulation Monitoring

• Monitors AC/DC systems (0–300V), unaffected by DC components in mixed systems .

• Measurement Range: 1–200 kΩ, with two independently adjustable response thresholds .

• Accuracy: High-precision detection with adjustable response delays (0–99 sec) .

✅ Dual Alarm Relays & Diagnostics

• Two SPDT alarm relays (configurable as NO/NC) for fault signaling .

• Self-test & Fault Memory: Automatic diagnostics and event logging .

• LCD Display: Real-time insulation resistance and system status .

✅ Robust Industrial Design

• Compact DIN-rail mounting (36mm width) for space-efficient installation .

• Spring-clamp terminals (supports 2 wires per connection) for easy wiring .

• Operating Temp: -10°C to +60°C (standard) .

✅ Flexible Integration

• External power supply allows monitoring of de-energized systems .

• Connection monitoring for system/earth faults .

Technical Specifications

Applications