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Mean Well DDRH-45-48DR Ultra Wide Input DC-DC Converter, 45W 48V, Din Rail Type
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Mean Well DDRH-45-48DR Ultra Wide Input DC-DC Converter, 45W 48V, 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 Voltage48 Volt
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Rated Current0.93 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-45-48DR to supply 48V to VoIP gateways or PoE switches in a telecom rack with a 48V DC bus?
Yes. The DDRH-45-48DR delivers 48V at 0.94A (45W) and accepts 150–1500VDC input, allowing it to interface with high-voltage DC distribution while providing a regulated 48V rail for telecom and networking equipment.
Is the DDRH-45-48DR suitable for 48V DC motor driver modules used in small automation systems?
At 45W and 0.94A, the DDRH-45-48DR can power low-wattage 48V DC motor drivers and stepper motor controllers used in light-duty automation. Verify that the combined load does not exceed 0.94A continuous draw.
Can the DDRH-45-48DR handle the input voltage range found in photovoltaic or battery-backed DC systems?
Yes. The 10:1 ultra-wide input range of 150–1500VDC makes the DDRH-45-48DR compatible with high-voltage PV string outputs and large battery bank systems before a main inverter stage.
Does the DDRH-45-48DR DIN rail mount work in standard industrial enclosures rated for cold environments?
The operating temperature range is –40°C to +80°C, making DIN rail installations in cold storage facilities or outdoor junction boxes viable. The fanless design eliminates a common ingress and maintenance concern in sealed enclosures.
What are the differences between the DDRH-45-48DR, DDRH-45-48P, and DDRH-45-48ST?
All three variants output 48V at 0.94A (45W) with the same 150–1500VDC ultra-wide input. The DR suffix indicates DIN rail mounting, the P is a PCB-mount unit, and the ST uses screw terminal connections for panel wiring.
Is the DDRH-45-48DR appropriate for powering 48V industrial sensors in a high-voltage DC distribution environment?
Yes. Many industrial field instruments and HART-compatible transmitters operate on a 48V supply, and the DDRH-45-48DR's 45W output provides a stable regulated source while its DIN rail form factor suits standard cabinet mounting.
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