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Mean Well DDRH-45-24ST Ultra Wide Input DC-DC Converter, 45W 24V, Screw Terminal Type
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Mean Well DDRH-45-24ST Ultra Wide Input DC-DC Converter, 45W 24V, 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 Voltage24 Volt
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Rated Current1.87 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 I use the DDRH-45-24ST to power 24V industrial automation controllers in a panel with a high-voltage DC bus?
Yes. The DDRH-45-24ST accepts 150–1500VDC input, making it suitable for stepping down from high-voltage DC buses commonly found in industrial automation panels. It delivers 24V at up to 1.87A (45W) with constant voltage output.
Is the DDRH-45-24ST suitable for powering 24V sensors and I/O modules in rail-mounted control cabinets?
Yes. The screw terminal form factor integrates directly into control cabinet wiring, and the 45W, 24V output is well suited for powering distributed I/O modules, proximity sensors, and signal converters that operate at 24VDC.
Can the DDRH-45-24ST operate in outdoor enclosures or cold-climate installations?
The unit is rated for –40°C to +80°C operation, which allows deployment in cold-climate industrial sites and unheated outdoor enclosures. No internal fan means no moving parts to fail in harsh conditions.
Does the fanless design affect the DDRH-45-24ST's ability to run continuously at full load?
The fanless design relies on conduction and convection cooling. At 45W output, the unit is built for continuous operation within its –40°C to +80°C temperature range, provided adequate airflow around the enclosure is maintained.
How does the DDRH-45-24ST differ from the DDRH-45-24DR and DDRH-45-24P?
All three models share identical electrical specs: 45W, 24V, 1.87A output with 150–1500VDC ultra-wide input. The difference is the mounting and termination style: the ST uses screw terminals, the DR mounts on a DIN rail, and the P is a PCB-mount type.
What embedded or IT equipment can the DDRH-45-24ST power at 24V and 45W?
The 24V, 45W output is compatible with embedded computing boards, industrial Ethernet switches, and PoE injectors that accept 24VDC input. The ultra-wide 10:1 input range also supports applications converting from photovoltaic or battery bank DC sources.
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