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Mean Well DDRH-45-48ST Ultra Wide Input DC-DC Converter, 45W 48V, Screw Terminal Type
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Mean Well DDRH-45-48ST Ultra Wide Input DC-DC Converter, 45W 48V, S...
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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Height1.26 in
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Weight0.67 lb
::specification::
Frequently Asked Questions
Can the DDRH-45-48ST power 48V relay coils and solenoid valves in industrial control panels wired with high-voltage DC?
Yes. The 48V, 0.94A (45W) screw terminal output is appropriate for driving 48V relay coils and solenoid valves in control panels that distribute power from a high-voltage DC bus. The screw terminal connections suit standard panel wiring practice.
Is the DDRH-45-48ST suitable for use in railway or rolling stock DC applications with variable bus voltages?
The 150–1500VDC ultra-wide input range covers common DC traction voltages including 600V and 750V systems. The –40°C to +80°C operating range also meets the thermal demands of rail environments.
Can the DDRH-45-48ST be used to power 48V battery chargers or maintenance circuits in energy storage systems?
The constant voltage output at 48V, 0.94A is appropriate for trickle charging or maintaining 48V lead-acid or lithium battery banks up to the 45W power limit. Verify that the charger's input requirements are within the 0.94A current capacity.
What installation environments are suitable for the DDRH-45-48ST given its temperature rating?
With an operating range of –40°C to +80°C and a fanless design, the DDRH-45-48ST is suited to harsh indoor environments such as cold storage, foundry floors, or outdoor cabinets where temperature extremes are common.
How does the DDRH-45-48ST compare to the DDRH-45-48DR and DDRH-45-48P?
All three models deliver 48V at 0.94A (45W) with the same 150–1500VDC ultra-wide input range. The ST version uses screw terminals for direct panel wiring, the DR version mounts on a DIN rail, and the P version mounts on a PCB.
Is the DDRH-45-48ST appropriate for supplying 48V to industrial Ethernet media converters or managed switches?
Yes. The regulated 48V, 45W output suits managed Ethernet switches and media converters that accept 48VDC input, particularly in environments where the input source is a high-voltage DC bus requiring step-down conversion.
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