ABB 1SVR730884R400

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Product Overview

The ABB 1SVR730884R400 is a CM-MPS.41 three-phase monitoring relay, designed to monitor phase loss, phase sequence errors, and phase unbalance in three-phase power systems. It ensures reliable protection by disconnecting the control circuit during abnormal conditions, thereby safeguarding motors and critical equipment.

Technical Specifications

• Model: 1SVR730884R400

• Series: CM-MPS Monitoring Relays

• Monitoring functions:

  • Phase loss detection

  • Phase sequence error detection

  • Phase unbalance detection

• Rated control supply voltage: 3 × 300...600 V AC

• Contacts: 2 C/O (changeover contacts)

• Switching capacity: 250 V AC / 4 A

• Mounting: 35 mm DIN rail

• Operating temperature range: -25 … +60 °C

• Certifications: CE, cULus, EAC

Features & Benefits

1. Comprehensive monitoring – detects abnormal conditions in three-phase systems.

2. Enhanced safety – automatically disconnects power to protect equipment.

3. Easy installation – standard DIN rail mounting.

4. High reliability – robust industrial design with strong EMC immunity.

5. Clear indication – LED indicators for quick fault diagnosis.

Application Areas

• Industrial motor control systems

• Power distribution and protection systems

• Pumps, compressors, and fans

• Elevators and automation equipment

• Power, petrochemical, and manufacturing industries

Precautions

1. Ensure voltage compatibility before installation.

2. Check wiring carefully, especially phase sequence.

3. Installation and commissioning should be performed by qualified personnel.

4. Regularly inspect relay contacts to avoid poor connections.

5. Do not service or dismantle under live conditions.

The structure and details of the product：

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