The ABB CP-A RU is an industrial redundancy unit designed to ensure DC power continuity in automation and control systems where reliability is essential. Combined with the ABB CP-A CM monitoring module, it allows the connection of two independent DC power supplies in a redundant configuration, ensuring load power even in the event of a failure of one of the two sources.

This professional ABB system is used in industrial electrical panels, automation systems, PLCs, process control systems, telecommunications, energy installations, and critical applications where machine downtime and service interruptions must be avoided.

The CP-A CM module continuously monitors the status of the two input power supplies and the output, providing indications through LEDs and relay contacts for alarm management and remote diagnostics.

Thanks to DIN rail mounting and the robust construction typical of ABB products, this solution represents a professional standard for implementing highly reliable redundant power supply systems.

⚙️ ABB CP-A RU Technical Specifications

Manufacturer: ABB
Model: CP-A RU
Type: DC Power Supply Redundancy Unit
Product Code: 1SVR427071R0000

Input 1

• Voltage: 10-40 VDC
• Current: 1-20 A

Input 2

• Voltage: 10-40 VDC
• Current: 1-20 A

Output

• Voltage: Input -0.6 V
• Current: 1-40 A

Mounting

• DIN Rail

⚙️ ABB CP-A CM Monitoring Module Technical Specifications

Model: CP-A CM

Monitoring Functions

• Input Power Supply 1 Monitoring
• Input Power Supply 2 Monitoring
• Output Voltage Monitoring
• Fault signaling through relay contacts
• Adjustable undervoltage threshold settings

LED Indicators

• IN1
• IN2
• OUT

Relay Contacts

Channel 1:
• 11 - 12 - 14

Channel 2:
• 21 - 22 - 24

Threshold Adjustment

• Approximate adjustable range: 18-28 VDC

🔧 Main Advantages

✔ Ensures power continuity in case of failure of one power supply
✔ Allows redundant connection of two DC power supplies
✔ Output current up to 40A
✔ Complete monitoring of power supply status
✔ Fault signaling via relay outputs
✔ Adjustable monitoring thresholds
✔ Simple DIN rail installation
✔ High reliability for industrial applications
✔ Reduces system downtime
✔ Ideal for critical and high-availability systems

Applications

✔ Industrial electrical panels
✔ PLC systems and industrial automation
✔ Process plants
✔ Monitoring and control systems
✔ Telecommunications
✔ Energy and photovoltaic systems
✔ Security systems
✔ Data centers and critical infrastructure
✔ Redundant power supplies for industrial equipment

Product Condition

• Used
• Tested and verified fully functional
• Complete with ABB CP-A CM Monitoring Module
• Normal cosmetic signs due to previous use
• Sold as shown in the photographs

Package Contents

• 1x ABB CP-A RU Redundancy Unit
• 1x ABB CP-A CM Monitoring Module
• Installed terminals as shown in the photos

🚀 Professional ABB solution for implementing safe, reliable redundant power supply systems suitable for critical industrial applications where service continuity is essential.