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Mean Well DDRH-30-24ST Ultra Wide Input DC-DC Converter, 30W 24V, Screw Terminal Type
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Mean Well DDRH-30-24ST Ultra Wide Input DC-DC Converter, 30W 24V, S...
The DDRH-30 is a 30W high-reliability ultra-wide input DC-DC converter engineered for photovoltaic, energy storage, and high-voltage industrial applications. Its 150~1500Vdc input range spans solar, battery string, and DC bus supply sources. Featuring 4KVac reinforced I/O isolation and fanless free air convection cooling, the DDRH-30 delivers dependable isolated power with no minimum load requirement across a -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 Rating30 Watt
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Output Voltage24 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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Length5.32 in
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Width2.76 in
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Height1.26 in
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Weight0.67 lb
::specification::
Frequently Asked Questions
Can the DDRH-30-24ST power 24 V load cells, pressure transmitters, or other field instruments from a high-voltage DC source?
Yes. The DDRH-30-24ST delivers 24 V at up to 1.25 A (30 W), which is appropriate for powering 24 V industrial field instruments such as pressure transmitters, load cells, and flow meters. Its screw terminal connections suit direct wiring in field junction boxes or control panels with a high-voltage DC bus input between 150 and 1500 VDC.
Is the DDRH-30-24ST suitable for wind turbine or solar inverter auxiliary circuits that need 24 V control power?
The 150–1500 VDC input range covers the high-voltage DC buses common in wind turbine nacelles and solar string inverters. The DDRH-30-24ST can supply 24 V / 1.25 A to control boards, communication modules, or contactor coils in these systems, and the –40°C to +80°C range suits outdoor nacelle and inverter enclosures.
Will the DDRH-30-24ST work reliably in cold-storage or refrigeration plant control panels?
With a lower operating temperature limit of –40°C, the DDRH-30-24ST can function in cold-storage environments without heaters or additional thermal management. The fanless design also avoids fan-related failures in condensing or frost-prone environments.
Can this unit supply 24 V to motion control drives or servo amplifiers in a high-voltage DC distribution system?
The DDRH-30-24ST provides 30 W at 24 V, which is sufficient for the logic and control circuitry of small servo drives or motion controllers, but may not supply the full power stage of larger drives. It is best used for the 24 V control supply rail rather than the main drive bus.
How does the screw terminal type differ from the DIN rail and PCB-mount variants in the DDRH-30-24 family?
All three provide 30 W, 24 V / 1.25 A output from 150–1500 VDC input with –40°C to +80°C operating range. The DDRH-30-24ST (screw terminal) measures 135.0 × 70.0 × 32.0 mm and weighs 0.305 kg; the DDRH-30-24DR (DIN rail) is 135.0 × 70.0 × 43.5 mm at 0.31 kg; the DDRH-30-24P (PCB) is 89.0 × 63.5 × 25.0 mm at 0.24 kg.
What certifications and warranty does the DDRH-30-24ST carry?
The DDRH-30-24ST is CE and EAC certified and covered by a 3-year warranty.
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