MEAN WELL DIN-Rail DC-DC Power Supply – DDR Series from 15W to 120W
The MEAN WELL DDR Series represents a powerful and flexible line of dc dc din rail power supply and tailored for modern industrial systems. Designed to convert one DC voltage to another while ensuring isolation and protection, these converters are widely used in factory automation, process control, railway systems, and smart energy infrastructure. The DDR series excels in harsh environments where consistent, isolated, and regulated power is essential.
With options ranging from 15W to 120W, DDR converters feature wide input voltage ranges—including 4:1 input ratios for some models—making them compatible with diverse DC power sources such as batteries, solar panels, or unstable field voltages. The series includes models with 5V, 12V, 24V, and 48V DC outputs, offering flexibility across multiple industrial applications.
Each DDR unit is DIN-rail mountable, ensuring easy integration into control cabinets or panel systems. The fanless design, high efficiency (up to 93%), and built-in protections such as overload, short-circuit, over-voltage, and over-temperature safeguards enhance operational safety and reduce maintenance overhead.

| Model | Output Voltage | Output Current | Input Range | Efficiency | Dimensions (mm) |
|---|---|---|---|---|---|
| DDR-15L-24 | 24VDC | 0.63A | 9~36VDC | 89% | 17.5×90×54.5 (W*H*D) |
| DDR-30L-24 | 24VDC | 1.25A | 9~36VDC | 91% | 35×90×54.5 (W*H*D) |
| DDR-60G-24 | 24VDC | 2.5A | 18~75VDC | 92% | 52.5×90×54.5 (W*H*D) |
| DDR-120B-24 | 24VDC | 5A | 18~75VDC | 93% | 32×125.2×102 (W*H*D) |
Key Product Features:
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Compact DIN rail mounting (TS-35/7.5 or 15)
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Fully isolated outputs, ensuring stable power separation
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Wide input voltage ranges: 9–36V, 18–75V, or 40–160V DC
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High conversion efficiency (up to 93%)
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Integrated protections for industrial safety
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Conformal coating for moisture, dust, and chemical resistance
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Certified to UL 508, EN 62368, and Class I Division 2 (Hazardous Locations)
Typical Application Scenarios:
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Industrial automation: powering programmable logic controllers (PLCs), sensors, and relays
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Smart buildings: integration into energy-efficient control panels
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Communication infrastructure: powering radio systems or base stations
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Railway systems: reliable operation under high-vibration environments
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Off-grid energy systems: battery-buffered solar or wind installations
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SCADA systems: stable DC supply in remote monitoring environments
The DDR Series reflects MEAN WELL’s expertise in creating industrial-grade, compact power solutions that meet the evolving needs of global manufacturers and system integrators. Whether you’re designing a control panel for an automated production line or powering a remote data acquisition module, DDR delivers dependable and efficient performance in a DIN rail form factor.
If you’re searching for a rugged dc dc converter for automation that is easy to install, efficient, and capable of withstanding industrial challenges, the MEAN WELL DDR Series is the ideal choice.
For more product details, availability, and application guides, visit our website:
www.ruidelitechnology.com









