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Mean Well

Mean Well DDRH-120-32 Ultra Wide Input DC-DC Converter, 120W 32V 3.75A

250~1500VDC 6:1 ultra-wide input range, withstand 1700Vdc surge input for 10 seconds, 63mm slim width, DC output voltage adjustable 30~36V
SKU:
DDRH-120-32
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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
    32 Volt
  • Rated Current
    3.75 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-120-32 supply power to 32V brushless DC motors or drives?

The DDRH-120-32 provides 32V at 3.75A (120W) and is suited for powering 32V BLDC motors, servo drives, or DC drives with loads within that current rating. Its DIN rail mount integrates directly into control cabinet builds.

Is the DDRH-120-32 suitable for use in railway or traction DC bus applications?

Yes. The DDRH-120-32 accepts 250–1500VDC input with the ability to withstand a 1700VDC surge for 10 seconds, making it compatible with traction DC bus architectures where intermediate voltage outputs at 32V are required for auxiliary loads.

Can I use the DDRH-120-32 to power 32V LED drivers or lighting in industrial enclosures?

The DDRH-120-32 can supply up to 3.75A at 32V from a high-voltage DC input, making it usable for driving 32V LED lighting systems or constant-voltage LED drivers rated within 120W. The output is also adjustable from 30V to 36V for fine-tuning.

What input voltages does the DDRH-120-32 accept?

The DDRH-120-32 accepts a 250–1500VDC input with a 6:1 ultra-wide range and can sustain a 1700VDC surge for 10 seconds. This suits applications drawing from high-voltage DC sources such as solar string outputs, battery banks, or traction buses.

Can the DDRH-120-32 operate in cold outdoor environments?

Yes. The DDRH-120-32 has an operating temperature range of -40°C to +80°C, making it appropriate for outdoor enclosures, cold-climate installations, and industrial environments where temperature extremes are expected.

How does the DDRH-120-32 compare to the other DDRH-120 series models?

The DDRH-120 series offers four output voltages: 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 use the same 63mm DIN rail housing and accept 250–1500VDC input.

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Mean Well DDRH-120-32 Ultra Wide Input DC-DC Converter, 120W 32V 3.75A
Mean Well

Mean Well DDRH-120-32 Ultra Wide Input DC-DC Converter, 120W 32V 3.75A

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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