Over 15 years experience of providing support of MEAN WELL Power Supplies
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Mean Well RD-125B Power Supply 125W 5V 24V
The RD is a 125W Mean Well DIN rail power converter with a 99mm profile (input range: 176~264VAC, operating temperature: -25~+70°C).
Key Features
- ✓ 99mm width — DIN rail TS-35 compatible
- ✓ Input voltage range: 176~264VAC
- ✓ DC output voltage adjustable ±10%
- ✓ Cooling by free air convection
- ✓ Wide operating temperature: -25~+70°C
- ✓ Protections: Short circuit / Overload / Over voltage
- ✓ Safety approvals: UL62368- TUV EN62368-1, EAC TP TC 004
- ✓ 3 years warranty
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BrandMean Well
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SeriesRD Series
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Power Rating133.4 Watt
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Output Voltage5 Volt
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Rated Current4.6 Ampere
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Input Voltage88V~264V
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No of Output2
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Standards MetCB,CE,EAC,RCM,TUV,UL
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Operation ModeConstant Voltage
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Operating Temperature-25°C~70°C
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Warranty3 Year
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Length7.83 in
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Width3.86 in
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Height1.5 in
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Weight1.54 lb
::specification::
Frequently Asked Questions
Can I use the RD-125B for a control system that needs 5V electronics and 24V devices from one power supply?
Yes. The RD-125B is a dual output constant voltage supply with 5V and 24V outputs. The listed 5V output is rated at 4.6A, and total power is 133.4W, which suits systems that need both rails in one chassis supply.
Is the RD-125B a good fit for industrial automation panels with mixed 5V and 24V loads?
It is intended for dual output applications where 5V control electronics and 24V equipment are used together. The unit is rated for 133.4W total power and accepts 88-264VAC input. That makes it suitable for industrial and automation cabinets using universal AC input.
Can the RD-125B handle embedded or machine subsystems in harsher enclosed environments?
Yes, the specifications list operation from -25°C to +70°C and resistance to 5G vibration. Those ratings support use in enclosed equipment where temperature swings and mechanical vibration are concerns. Its compact size of 199.0 x 98.0 x 38.0 mm also helps in tighter panel layouts.
Is the RD-125B rated for outdoor use?
No outdoor protection rating is listed in these specs. Because there is no stated IP rating, it should be used indoors or inside a protective enclosure. The operating temperature range is -25°C to +70°C, but that does not replace ingress protection.
What are the main differences between the RD-125B and other RD series models listed here?
The RD-125B is 133.4W with a listed 5V output current of 4.6A. Other specified siblings are RD-125A at 130.9W with 5V 7.7A, RD-3513 at 35.1W with 13.5V 1.3A, RD-35A at 32W with 5V 4A, RD-35B at 35W with 5V 2.2A, RD-50A at 54W with 5V 6A, RD-50B at 53.6W with 5V 4A, RD-65A at 66W with 5V 6A, RD-65B at 68W with 5V 4A, and RD-85A and RD-85B at 88W with 5V 8A.
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