ABB

ABB CMA121 3DDE300401 DC Power Supply Module

SKU CMA121 3DDE300401

In stock
  • 12-month warranty
  • Free returns within 30 days

  • Manufacturer: ABB

  • Product No.: CMA121 3DDE300401

  • Country of origin:Sweden

  • Product Type: DC Power Supply Modules

  • Barcode: 8537101190

  • Payment: T/T, Western Union

  • Weight: 540g

  • Dimensions: 2.8 x 18.5 x 12.8 cm

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

The ABB CMA121 (3DDE300401) is a specialized DC power supply module engineered for industrial automation and distributed control system (DCS) architectures. Designed to deliver reliable and regulated DC power to sensitive logic and control circuits, this unit ensures stable operation within demanding industrial environments.

The module functions as a high-efficiency DC/DC power converter, accepting a standard industrial input voltage range and providing a tightly regulated low-voltage output. It integrates seamlessly into standard control cabinets, making it an ideal choice for powering internal rack components, digital I/O loops, and associated instrumentation.

Features

  • Wide input voltage tolerance supporting standard industrial 24V DC infrastructure
  • Precisely regulated low-voltage DC output for sensitive electronic logic circuits
  • Galvanic isolation between input and output stages to prevent ground loops and protect downstream components
  • Compact modular construction optimized for standard DIN rail or panel mounting within control enclosures
  • Designed for high-reliability continuous operation in industrial temperature ranges

Applications

  • Distributed Control Systems (DCS) power distribution
  • Industrial automation and motor control panels
  • Process control instrumentation power conditioning
  • OEM machinery and control cabinet manufacturing

Technical Specifications

Parameter Specification
Manufacturer ABB
Product Type DC Power Supply Module
Model / Ordering Code CMA121 / 3DDE300401
Input Voltage Range 18 to 32 V DC (24 V DC nominal)
Output Voltage 5 V DC regulated
Maximum Output Current 4 A (20 W)
Efficiency Greater than 85 percent
Isolation 500 V DC input-to-output
Mounting Type DIN Rail / Panel Mount
Country of Origin Sweden
Dimensions 2.8 x 18.5 x 12.8 cm
Net Weight 0.54 kg

Installation Guidelines

  1. Verify the ABB CMA121 part number and order code against system design requirements before unboxing.
  2. Ensure all incoming power sources to the cabinet are fully de-energized and locked out prior to handling wiring.
  3. Inspect the module housing and terminals for any transit damage or contamination.
  4. Securely mount the module onto the designated mounting rail or backplane within the control enclosure.
  5. Connect input power and output load lines to the corresponding terminal blocks, ensuring proper polarity and torque specifications.
  6. Restore system power and verify output voltage levels using a calibrated multimeter before connecting downstream logic loads.

FAQ

What is the primary function of the ABB CMA121 3DDE300401?
The ABB CMA121 3DDE300401 is a DC power supply module designed to convert standard industrial DC supply voltages into a precisely regulated output for sensitive control system electronics.

What are the input and output electrical ratings for this module?
The ABB CMA121 accepts an input voltage range of 18 to 32 V DC and delivers a regulated 5 V DC output at up to 4 A of current.

Does the ABB CMA121 provide electrical isolation?
Yes, the ABB CMA121 features 500 V DC input-to-output isolation to prevent ground loops and protect downstream instrumentation in harsh industrial environments.

What are the physical dimensions and weight of the CMA121 module?
The ABB CMA121 measures 2.8 x 18.5 x 12.8 cm and has a net weight of 0.54 kg.

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  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
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  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
Sweden

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