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Mean Well

Mean Well DDRH-120-48 Ultra Wide Input DC-DC Converter, 120W 48V 2.5A

250~1500VDC 6:1 ultra-wide input range, withstand 1700Vdc surge input for 10 seconds, 63mm slim width, DC output voltage adjustable 48~58V
SKU:
DDRH-120-48
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Description

The DDRH-120 is a 120W high-reliability ultra-wide input DIN Rail DC-DC converter engineered for photovoltaic, renewable energy storage, and high-voltage industrial systems. Its 250~1500Vdc input range covers high-voltage DC bus and battery string sources, while 4KVac reinforced I/O isolation ensures clean, noise-free power conversion. Featuring fanless free air convection cooling and a DC OK relay output, the DDRH-120 reliably operates across a -40~+80℃ temperature range.

Key Features

  • ✓ Ultra-wide 250~1500Vdc input range — high-voltage DC bus and battery string compatible
  • ✓ 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
  • ✓ DC OK relay contact output — signals supply status
  • ✓ Protections: Short circuit / Overload / Over voltage / Reverse polarity / Under voltage lockout
  • ✓ DIN rail TS-35 compatible
  • ✓ Safety approvals: IEC62109-1, BS EN/EN62109-1, EAC TP TC 004
  • ✓ 3 years warranty

Specifications
  • Brand
    Mean Well
  • Series
    DDRH Series
  • Power Rating
    120 Watt
  • Output Voltage
    48 Volt
  • Rated Current
    2.5 Ampere
  • Input Voltage
    250V~1500V
  • Standards Met
    CE,EAC
  • Operation Mode
    Constant Voltage
  • Operating Temperature
    -40°C~80°C
  • Warranty
    3 Year
  • Length
    6.3 cm
  • Width
    12.52 cm
  • Height
    11.5 cm
  • Weight
    0.85 kg

File Downloads

::specification::

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Frequently Asked Questions

Can the DDRH-120-48 supply 48V DC to PoE switches or telecom equipment from a high-voltage DC bus?

Yes. The DDRH-120-48 provides 48V at 2.5A (120W) and accepts 250–1500VDC input, making it a good fit for stepping down high-voltage DC buses to the 48V rail used by telecom equipment, PoE switches, and VoIP gear in industrial or data center settings.

Is the DDRH-120-48 suitable for powering 48V servo drives or motor controllers?

The DDRH-120-48 delivers up to 2.5A at 48V (120W), which can power 48V servo drives and motor controllers within that power envelope. The output voltage is also adjustable from 48V to 58V via the trim function if a higher rail is needed.

Can I use the DDRH-120-48 in solar or battery storage systems where the bus voltage varies widely?

Yes. The 6:1 ultra-wide input range of 250–1500VDC and the 1700VDC surge tolerance for 10 seconds make the DDRH-120-48 well suited for solar string inverter housings or battery energy storage systems where bus voltage fluctuates significantly.

Does the DDRH-120-48 require any cooling fan?

No fan information is specified for the DDRH-120-48. The related 15W DDRH series models are documented as fanless; the DDRH-120-48 product specs do not list active cooling, though buyers should confirm with the datasheet for the full thermal management details at maximum load.

What is the operating temperature range of the DDRH-120-48?

The DDRH-120-48 operates from -40°C to +80°C, providing reliable performance in both low-temperature outdoor installations and high-ambient industrial enclosures.

How does the DDRH-120-48 differ from the other DDRH-120 models?

The DDRH-120 series has four variants: DDRH-120-12 (100.8W, 12V, 8.4A), DDRH-120-24 (120W, 24V, 5A), DDRH-120-32 (120W, 32V, 3.75A), and DDRH-120-48 (120W, 48V, 2.5A). All share the 63mm DIN rail housing and 250–1500VDC input range.

Is the output voltage of the DDRH-120-48 adjustable?

Yes, the output voltage is adjustable from 48V up to 58V using the built-in trim. This allows the converter to serve loads that require a voltage higher than the nominal 48V output.

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Mean Well DDRH-120-48 Ultra Wide Input DC-DC Converter, 120W 48V 2.5A
Mean Well

Mean Well DDRH-120-48 Ultra Wide Input DC-DC Converter, 120W 48V 2.5A

Please for Pricing

The DDRH-120 is a 120W high-reliability ultra-wide input DIN Rail DC-DC converter engineered for photovoltaic, renewable energy storage, and high-voltage industrial systems. Its 250~1500Vdc input range covers high-voltage DC bus and battery string sources, while 4KVac reinforced I/O isolation ensures clean, noise-free power conversion. Featuring fanless free air convection cooling and a DC OK relay output, the DDRH-120 reliably operates across a -40~+80℃ temperature range.

Key Features

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