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Mean Well DDRH-45-12DR Ultra Wide Input DC-DC Converter, 45W 12V, Din Rail Type
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Mean Well DDRH-45-12DR Ultra Wide Input DC-DC Converter, 45W 12V, D...
The DDRH-45 is a 45W high-reliability ultra-wide input DC-DC converter designed for photovoltaic, renewable energy storage, and demanding high-voltage industrial systems. Supporting a 150~1500Vdc input range, it adapts to solar, battery string, and DC bus supply sources. With 4KVac reinforced I/O isolation, fanless free air convection cooling, and no minimum load requirement, the DDRH-45 offers reliable power conversion 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 Rating45 Watt
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Output Voltage12 Volt
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Rated Current3.75 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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Height1.71 in
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Weight0.68 lb
::specification::
Frequently Asked Questions
Can I use the DDRH-45-12DR in a solar-powered remote monitoring station?
Yes. The DDRH-45-12DR accepts 150–1500VDC input, making it well suited for solar arrays or battery banks that produce high and variable bus voltages. It delivers 12V at up to 3.75A (45W) to power sensing and communication equipment on the DIN rail.
Is the DDRH-45-12DR suitable for powering 12V PLCs and industrial controllers in an automation panel?
Yes. The 12V, 3.75A output is a standard supply rail for many PLCs, HMIs, and I/O modules. Its DIN rail form factor fits directly into standard control cabinets, and the fanless design keeps the panel noise-free.
Can this converter run in a traction or vehicle electrification system with a high-voltage DC bus?
The 150–1500VDC input range covers the high-voltage bus voltages common in EV charging infrastructure and rail traction auxiliaries. At 45W output it is best suited for auxiliary loads such as control electronics rather than high-power drive systems.
What is the operating temperature range of the DDRH-45-12DR, and can it be used outdoors?
The unit is rated for –40°C to +80°C operation. It does not carry an IP rating for ingress protection, so outdoor deployment requires mounting inside a suitably rated enclosure to protect against moisture and dust.
Does the DDRH-45-12DR need forced-air cooling in a sealed cabinet?
No. The DDRH-45-12DR uses a fanless convection-cooled design, so no forced-air ventilation is required. Ensure adequate clearance around the unit for natural convection, especially when ambient temperatures approach the 80°C maximum.
How does the DDRH-45-12DR (DIN Rail) differ from the DDRH-45-12P and DDRH-45-12ST variants?
All three share the same 45W, 12V, 3.75A output and 150–1500VDC input. The DDRH-45-12DR (135×70×43.5 mm, 0.31 kg) clips onto a DIN rail. The DDRH-45-12P (89×63.5×25 mm, 0.24 kg) is a compact PCB-mount module. The DDRH-45-12ST (135×70×32 mm, 0.305 kg) uses screw terminals without the DIN rail clip.
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