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Mean Well DDRH-30-12ST Ultra Wide Input DC-DC Converter, 30W 12V, Screw Terminal Type
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Mean Well DDRH-30-12ST Ultra Wide Input DC-DC Converter, 30W 12V, 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 Voltage12 Volt
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Rated Current2.5 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-30-12ST power 12V field devices or remote terminal units using screw terminal connections?
Yes. The DDRH-30-12ST is a screw terminal DC-DC converter providing 30W at 12V and 2.5A, making it appropriate for powering 12V field devices such as remote terminal units (RTUs), small controllers, or sensors where screw terminal wiring is standard practice. Its 10:1 input range (150–1500VDC) accommodates diverse DC source voltages.
Is the DDRH-30-12ST suitable for use in ruggedized industrial enclosures with screw-terminal wiring practice?
Yes. The screw terminal form factor of the DDRH-30-12ST is well-suited for industrial panel builders and system integrators who wire using terminal blocks rather than connectors or PCB board mounting. At 30W and 2.5A, it powers lightweight 12V automation and control loads in these enclosures.
Can this converter power 12V relay modules or output cards in a control system?
Yes. The DDRH-30-12ST provides 30W at 2.5A, sufficient to drive 12V relay modules, output expansion cards, or small actuator coils used in industrial control systems. The fanless design means it operates without moving parts, reducing maintenance requirements in sealed enclosures.
What environmental temperature range does the DDRH-30-12ST support?
The DDRH-30-12ST is rated for -40°C to +80°C, supporting deployments in cold-weather outdoor cabinets, freezer automation, or high-temperature factory environments. No IP rating is specified, so the enclosure around the unit must provide appropriate ingress protection for the installation environment.
What is the difference between the DDRH-30-12ST and the other 30W 12V models in the DDRH series?
The DDRH-30-12ST (screw terminal, 135.0 × 70.0 × 32.0 mm, 0.305 kg), DDRH-30-12DR (DIN rail, 135.0 × 70.0 × 43.5 mm, 0.31 kg), and DDRH-30-12P (PCB mount, 89.0 × 63.5 × 25.0 mm, 0.24 kg) all share 30W, 12V, 2.5A output and 150–1500VDC input. The key difference is the mechanical form factor for mounting and wiring.
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