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

250~1500VDC 6:1 ultra-wide input rangewithstand 1700Vdc surge input for 10 seconds63mm slim widthDC output voltage adjustable 30~36V

SKU DDRH-120-32

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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

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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Model	Power	Voltage	Current	IP Rating
Mean Well DDRH-120-48 Ultra Wide Input DC-DC Converter, 120W 48V 2.5A	120W	48V	2.5A	Indoor	View
Mean Well DDRH-120-24 Ultra Wide Input DC-DC Converter, 120W 24V 5A	120W	24V	5A	Indoor	View
Mean Well DDRH-120-12 Ultra Wide Input DC-DC Converter, 100.8W 12V 8.4A	100.8W	12V	8.4A	Indoor	View

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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

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

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Frequently Asked Questions

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

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