Schneider 140CRA31200 Product Overview

The Schneider 140CRA31200 is a high-performance current relay from the Modicon Quantum series, designed for industrial automation and control systems. It provides precise current monitoring and protection for motors, transformers, and other electrical equipment.

This relay is widely used in applications requiring reliable overcurrent and undercurrent detection, ensuring equipment safety and operational efficiency.

Product Advantages

1. High Accuracy – Delivers precise current measurement with minimal deviation.

2. Robust Design – Built to withstand harsh industrial environments (vibration, temperature fluctuations).

3. Easy Integration – Compatible with Schneider’s Modicon Quantum automation systems.

4. Flexible Configuration – Adjustable current thresholds for different protection needs.

5. LED Indicators – Visual status monitoring for quick diagnostics.

6. Wide Voltage Range – Supports multiple input voltages for diverse applications.

Technical Specifications

Applications

• Motor Protection – Prevents damage from overcurrent or phase loss.

• Transformer Monitoring – Ensures safe operation under load variations.

• Industrial Automation – Used in PLC-controlled systems for current supervision.

• Energy Management – Monitors power consumption in electrical panels.

• HVAC Systems – Protects compressors and fans from electrical faults.

Compatible Models (Product Pairing)

The 140CRA31200 works seamlessly with:

• Modicon Quantum PLCs (e.g., 140CPU65150)

• Schneider Power Supplies (e.g., ABL2REM24045)

• Circuit Breakers (e.g., GV2ME14)

• Communication Modules (e.g., 140NOE77101)

Installation Instructions

1. Mounting – Secure the relay on a DIN rail using the clip mechanism.

2. Wiring – Connect current inputs (terminals 1-2) and output contacts (terminals 3-4-5).

3. Configuration – Set current thresholds via DIP switches or software (if programmable).

4. Testing – Verify operation using a calibrated current source before full deployment.

5. Safety – Ensure power is disconnected during installation.

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FAQ (Frequently Asked Questions)

Q1: What is the difference between 140CRA31200 and 140CRA31100?
A1: The 140CRA31200 supports 1A/5A current ranges, while the 140CRA31100 is for lower currents (0.1-1A).

Q2: Can this relay be used in 3-phase systems?
A2: No, it’s designed for single-phase monitoring. For 3-phase, use the 140CRA33100.

Q3: Is the relay programmable?
A3: No, thresholds are set via DIP switches (non-programmable).

Q4: What is the lifespan of the contacts?
A4: Rated for 100,000 cycles at full load.

Q5: Does it include surge protection?
A5: No, external surge suppressors are recommended for high-noise environments.

Q6: Can it monitor DC current?
A6: Yes, it supports 24V DC input for DC applications.