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Mean Well DDRH-15-12ST Ultra Wide Input DC-DC Converter, 15W 12V, Screw Terminal Type
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Mean Well DDRH-15-12ST Ultra Wide Input DC-DC Converter, 15W 12V, S...
The DDRH-15 is a 15W high-reliability ultra-wide input DC-DC converter designed for photovoltaic, renewable energy, and demanding high-voltage industrial applications. Its exceptional 150~1500Vdc input range — a 10:1 ratio — covers solar panels, battery strings, and high-voltage DC bus sources. With 4KVac reinforced I/O isolation, fanless free air convection cooling, and no minimum load requirement, the DDRH-15 provides stable, isolated power conversion across a wide -40~+80°C operating range.
Key Features
- ✓ Ultra-wide 150~1500Vdc input range — covers solar, ESS, and DC bus sources
- ✓ DC output voltage adjustable ±10%
- ✓ 4KVac reinforced I/O isolation
- ✓ Cooling by free air convection — fanless design, no minimum load required
- ✓ Wide operating temperature: -40°C ~ +80°C
- ✓ Protections: Short circuit / Overload / Over voltage / Reverse polarity / Under voltage lockout
- ✓ DIN rail TS-35/7.5 or 15 compatible (DR type)
- ✓ Safety approvals: IEC62109-1 (LVD), EAC TP TC 004
- ✓ 3 years warranty
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BrandMean Well
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SeriesDDRH Series
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Power Rating15 Watt
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Output Voltage12 Volt
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Rated Current1.25 Ampere
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Input Voltage150V~1500V
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No of Output1
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Dimming ControlNone
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Standards MetCE,EAC
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Operation ModeConstant Voltage
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Operating Temperature-40°C~80°C
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Warranty3 Year
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Length4.82 in
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Width2.26 in
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Height1.26 in
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Weight0.46 lb
::specification::
Frequently Asked Questions
Can the DDRH-15-12ST power a 12V industrial Ethernet switch or communication module from a high-voltage DC bus?
Yes. The DDRH-15-12ST accepts a 150–1500VDC input and provides a stable 12V/1.25A output, making it appropriate for powering compact 12V communication modules, managed switches, or other low-power networking equipment in industrial control panels fed from high-voltage DC distribution.
Is the DDRH-15-12ST suitable for use in solar or wind energy storage systems with variable high-voltage DC inputs?
The DDRH-15-12ST is designed for a 10:1 ultra-wide input range from 150V to 1500VDC, which covers the variable bus voltages common in solar string inverters, battery storage systems, and wind turbine converters. It can power 12V auxiliary loads such as monitoring circuits or control logic at up to 15W.
Can I use this unit to derive 12V logic power in a high-voltage motor drive or servo amplifier enclosure?
Yes. The screw terminal connection style of the DDRH-15-12ST makes it practical to wire directly into a motor drive enclosure where high-voltage DC bus power is available. It provides 12V at up to 1.25A (15W) for powering auxiliary logic circuits, fans, or field bus interfaces within the drive cabinet.
What are the mounting and physical characteristics of the DDRH-15-12ST compared to other 15W 12V mounting options in this series?
The DDRH-15-12ST uses screw terminal connections and measures 122.3 × 57.3 × 32.0 mm at 0.21 kg. The DDRH-15-12P (PCB mount) is more compact at 76.2 × 50.8 × 25.0 mm and 0.17 kg, while the DDRH-15-12DR (DIN rail) is the largest at 122.3 × 57.3 × 43.5 mm and 0.215 kg. All share identical 15W/12V/1.25A output and 150–1500VDC input.
Is the DDRH-15-12ST fanless, and does that affect its suitability for sealed or vibration-prone enclosures?
Yes, the DDRH-15-12ST uses a fanless design with no moving parts. This makes it well-suited for sealed enclosures where ventilation is limited and for vibration-prone industrial environments such as machine tool panels or transportation equipment. Its -40°C to +80°C operating range further supports demanding thermal conditions.
Does the 15W output of the DDRH-15-12ST limit what industrial devices it can power?
At 15W and 1.25A output, the DDRH-15-12ST is sized for low-power 12V loads such as sensors, signal converters, HMI displays under 15W, or logic power rails. It is not intended for loads requiring several amps at 12V; for higher current requirements the series includes models such as the DDRH-60-12 at 60W/5A or DDRH-120-12 at 100.8W/8.4A.
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