Overview

The ABB CMA121 3DDE300401 DC Power Supply Module is a high-efficiency DC/DC power converter optimized for industrial automation applications. This robust module accepts an input voltage range of 18-32V DC (nominal 24V) and provides a precisely regulated output of 5V ±1%. Its design makes it ideal for sensitive control systems where stable power supply is essential.

Functional Highlights

Key features of the CMA121 include a maximum output current of 4A, delivering up to 20W of power while maintaining an energy efficiency greater than 85%. Furthermore, it ensures minimal ripple and noise levels, with less than 50mV peak-to-peak, thereby supporting reliable operation of digital control circuits.

The module offers 500V DC input-to-output isolation, providing enhanced electrical protection in demanding industrial environments. This isolation not only increases system safety but also prevents ground loops in distributed control architectures, which is vital for system integrity.

The compact design of the CMA121 allows for easy integration into motor control panels and automation cabinets. Its wide operating tolerance makes it particularly suitable for applications with unstable power sources or long cable runs.

Technical Data

• Model Number: CMA121 3DDE300401
• Module Type: DC Power Supply Module
• Manufacturer: ABB
• Condition: Brand New
• Weight: 0.54 kg
• Dimensions: 2.8 x 18.5 x 12.8 cm
• HS CODE: 8537101190
• Product Origin: Sweden
• System Type: DCS (Distributed Control System)
• Status: Active
• Input Voltage Range: 18-32V DC (24V nominal)
• Output Voltage: 5V ±1%
• Maximum Output Current: 4A (20W power)
• Efficiency: >85%
• Ripple/Noise: <50mV peak-to-peak
• Input-to-Output Isolation: 500V DC

Typical Applications

The ABB CMA121 DC Power Supply Module is ideal for:

• Industrial automation systems requiring stable power supply
• Motor control panels and automation cabinets
• Applications that experience unstable power sources or long cable runs
• Environments with sensitive digital control circuits needing clean power

FAQ

1. What is the weight of the CMA121 DC Power Supply Module?
   The CMA121 weighs 0.54 kg.

2. What are the dimensions of this power supply module?
   Its dimensions are 2.8 x 18.5 x 12.8 cm.

3. What input voltage range does the CMA121 support?
   It supports an input voltage range of 18-32V DC.

4. What is the maximum output current of the CMA121?
   The module provides a maximum output current of 4A.

5. How much ripple/noise does the CMA121 have?
   It maintains less than 50mV peak-to-peak ripple/noise.