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Mean Well DDRH-120-24 Ultra Wide Input DC-DC Converter, 120W 24V
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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
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BrandMean Well
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SeriesDDRH Series
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Power Rating120 Watt
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Output Voltage24 Volt
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Rated Current5 Ampere
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Input Voltage250V~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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Length2.48 in
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Width4.93 in
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Height4.53 in
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Weight1.86 lb
::specification::
Frequently Asked Questions
Can the DDRH-120-24 power 24V PLCs and industrial automation equipment?
Yes. The DDRH-120-24 provides 24V at up to 5A (120W), which is the standard supply voltage for most PLCs, I/O modules, and industrial automation controllers. It mounts on a DIN rail and operates from 250–1500VDC input, suitable for systems connected to medium-voltage DC distribution buses.
Is the DDRH-120-24 appropriate for powering 24V actuators and solenoid valves in a machine control cabinet?
The DDRH-120-24 delivers 5A at 24V, providing up to 120W for 24V actuators, solenoid valves, or relay coils in machine control applications. Verify that the combined inrush and steady-state load remains within the 5A continuous rating.
Can I use the DDRH-120-24 to step down a 600V or 1000V DC bus to 24V for instrumentation?
Yes. The DDRH-120-24 accepts 250–1500VDC input and can tolerate a 1700VDC surge for 10 seconds, making it well suited for stepping down high-voltage DC bus rails — such as 600V or 1000V traction or solar buses — to 24V for instrumentation and control circuits.
What operating temperature range does the DDRH-120-24 support?
The DDRH-120-24 operates from -40°C to +80°C, covering both arctic cold and high-ambient industrial environments. No derating information is provided for the upper boundary within the published specs.
What mounting form factor does the DDRH-120-24 use, and how wide is it?
The DDRH-120-24 is a DIN rail-mount converter measuring 63.0 × 125.2 × 115.0 mm with a 63mm slim width. It fits standard DIN rail enclosures and weighs 0.845 kg.
Can the output voltage of the DDRH-120-24 be trimmed above 24V?
Yes, the output voltage is adjustable from 24V up to 29V using the built-in trim function. This allows the output to be set precisely for loads with higher forward voltage requirements or to account for cable voltage drop.
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Other DDRH-120 Models
3 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well DDRH-120-48 Ultra Wide Input DC-DC Converter, 120W 48V | 120W | 48V | 2.5A | Indoor | $134.88 | View |
| Mean Well DDRH-120-32 Ultra Wide Input DC-DC Converter, 120W 32V | 120W | 32V | 3.75A | Indoor | $134.88 | View |
| Mean Well DDRH-120-12 Ultra Wide Input DC-DC Converter, 100.8W 12V | 100.8W | 12V | 8.4A | Indoor | $134.88 | View |
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