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Mean Well DDRH-45-24DR Ultra Wide Input DC-DC Converter, 45W 24V, Din Rail Type 1.87A

150~1500VDC 10:1 ultra-wide input rangefanless design-40~80°C ultra-wide operating temperature

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DDRH-45-24DR

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The DDRH-45 is a 45W high-reliability ultra-wide input DC-DC converter designed for photovoltaic, renewable energy storage, and demanding high-voltage industrial systems. Supporting a 150~1500Vdc input range, it adapts to solar, battery string, and DC bus supply sources. With 4KVac reinforced I/O isolation, fanless free air convection cooling, and no minimum load requirement, the DDRH-45 offers reliable power conversion 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

Frequently Asked Questions

Can the DDRH-45-24DR power 24VDC industrial actuators and solenoid valves from a high-voltage DC bus?

Yes. The 24V, 1.87A (45W) output is the standard supply for many pneumatic solenoid valves, linear actuators, and relay coils in industrial automation. The DIN rail form factor and 150–1500VDC input suit direct integration into automation panels fed from a high-voltage bus.

Is this converter suitable for supplying 24V to a Modbus RTU network of field instruments?

At 24V and 1.87A, the DDRH-45-24DR can power a small network of 4–20 mA field transmitters, RTU nodes, and I/O modules. For larger networks drawing more than 45W total, a higher-wattage model in the DDRH series would be needed.

Can the DDRH-45-24DR be used in a battery energy storage system (BESS) to supply 24V control electronics?

The 150–1500VDC input range encompasses typical BESS stack voltages. It can reliably power 24V BMS communication boards, contactors, and protection relays at up to 1.87A while operating across the –40°C to +80°C temperature range.

What temperature range does the DDRH-45-24DR support, and is it suitable for outdoor cabinet installations?

The unit operates from –40°C to +80°C. No IP rating is specified, so outdoor deployment requires an appropriately rated enclosure. The wide temperature range accommodates most geographic climates when properly enclosed.

Does the DDRH-45-24DR require forced ventilation in a tightly packed DIN rail assembly?

No forced ventilation is required thanks to the fanless design. Leave adequate clearance—typically 25 mm—above and below the unit so natural convection can carry heat away from the 135×70×43.5 mm chassis.

How does the DDRH-45-24DR compare to the DDRH-45-24P and DDRH-45-24ST?

All three provide 45W at 24V, 1.87A with a 150–1500VDC input. The DDRH-45-24DR (135×70×43.5 mm, 0.31 kg) snaps onto a DIN rail. The DDRH-45-24P (89×63.5×25 mm, 0.24 kg) is a PCB-mount module. The DDRH-45-24ST (135×70×32 mm, 0.305 kg) has screw terminals but no DIN clip.

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Model	Power	Voltage	Current	IP Rating
Mean Well DDRH-45-48ST Ultra Wide Input DC-DC Converter, 45W 48V, Screw Terminal Type 938mA	45W	48V	0.93A	Indoor	View
Mean Well DDRH-45-48P Ultra Wide Input DC-DC Converter, 45W 48V, PCB Type 938mA	45W	48V	0.93A	Indoor	View
Mean Well DDRH-45-48DR Ultra Wide Input DC-DC Converter, 45W 48V, Din Rail Type 938mA	45W	48V	0.93A	Indoor	View
Mean Well DDRH-45-24ST Ultra Wide Input DC-DC Converter, 45W 24V, Screw Terminal Type 1.87A	45W	24V	1.87A	Indoor	View
Mean Well DDRH-45-24P Ultra Wide Input DC-DC Converter, 45W 24V, PCB Type 1.87A	45W	24V	1.87A	Indoor	View
Mean Well DDRH-45-15ST Ultra Wide Input DC-DC Converter, 45W 15V, Screw Terminal Type 3A	45W	15V	3A	Indoor	View
Mean Well DDRH-45-15P Ultra Wide Input DC-DC Converter, 45W 15V, PCB Type 3A	45W	15V	3A	Indoor	View
Mean Well DDRH-45-15DR Ultra Wide Input DC-DC Converter, 45W 15V, Din Rail Type 3A	45W	15V	3A	Indoor	View
Mean Well DDRH-45-12ST Ultra Wide Input DC-DC Converter, 45W 12V, Screw Terminal Type 3.75A	45W	12V	3.75A	Indoor	View
Mean Well DDRH-45-12P Ultra Wide Input DC-DC Converter, 45W 12V, PCB Type 3.75A	45W	12V	3.75A	Indoor	View
Mean Well DDRH-45-12DR Ultra Wide Input DC-DC Converter, 45W 12V, Din Rail Type 3.75A	45W	12V	3.75A	Indoor	View

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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

Mean Well DDRH-45-24DR Ultra Wide Input DC-DC Converter, 45W 24V, Din Rail Type 1.87A

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Frequently Asked Questions

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Mean Well DDRH-45-24DR Ultra Wide Input DC-DC Converter, 45W 24V, Din Rail Type 1.87A

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