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Mean Well DDRH-30-48ST Ultra Wide Input DC-DC Converter, 30W 48V, Screw Terminal Type
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Mean Well DDRH-30-48ST Ultra Wide Input DC-DC Converter, 30W 48V, 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 Voltage48 Volt
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Rated Current0.62 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-30-48ST supply 48 V power to industrial Ethernet switches or wireless access points in a panel with a high-voltage DC bus?
Yes. The DDRH-30-48ST provides 48 V at 0.62 A (30 W), which covers small industrial Ethernet switches and wireless access points. Its screw terminal connections and 150–1500 VDC input allow direct wiring from a high-voltage DC distribution rail in industrial control panels.
Is this converter suitable for providing 48 V auxiliary power in rail or transit control cabinets?
The DDRH-30-48ST's 150–1500 VDC input range accommodates the high-voltage DC buses used in rail traction and transit systems. Its –40°C to +80°C range and fanless design suit the harsh thermal and vibration environments typical of rail vehicles and wayside installations.
Can the DDRH-30-48ST be used in outdoor enclosures or harsh environments without active cooling?
Yes. The fanless design requires no ventilation openings, making it compatible with sealed outdoor enclosures. The –40°C to +80°C operating range covers extreme ambient conditions found in outdoor substations, wind farms, and remote monitoring installations.
Is the DDRH-30-48ST a good choice for powering 48 V load cells or precision measurement instruments in industrial weighing systems fed from a high-voltage DC rail?
At 48 V / 0.62 A (30 W), the DDRH-30-48ST can supply 48 V instruments and measurement devices with moderate power draws. The screw terminals provide robust wiring connections suitable for industrial measurement environments, and the wide input range supports integration into high-voltage DC-powered weighing system panels.
How does the screw terminal 30 W 48 V model compare to the PCB and DIN rail variants?
All three share 30 W output at 48 V / 0.62 A, 150–1500 VDC input, and –40°C to +80°C operating range. The DDRH-30-48ST (screw terminal) measures 135.0 × 70.0 × 32.0 mm and weighs 0.305 kg; the DDRH-30-48DR (DIN rail) is 135.0 × 70.0 × 43.5 mm at 0.31 kg; the DDRH-30-48P (PCB) is 89.0 × 63.5 × 25.0 mm at 0.24 kg.
What certifications and warranty coverage apply to the DDRH-30-48ST?
The DDRH-30-48ST carries CE and EAC certifications and is covered by a 3-year warranty.
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