Over 15 years experience of providing support of MEAN WELL Power Supplies
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Mean Well IRM-03-12 Switching Power Supply 3W 12V 250mA - Encapsulated
The IRM-03 is a 3W Mean Well power converter (input range: 85~305VAC, operating temperature: -30~+85℃).
Key Features
- ✓ Input voltage range: 85~305VAC
- ✓ 3KVAC reinforced I/O isolation
- ✓ Cooling by free air convection — no minimum load required
- ✓ Wide operating temperature: -30~+85℃
- ✓ Protections: Short circuit / Overload / Over voltage
- ✓ Safety approvals: UL62368-1, TUV EN62368, TUV EN60335-1, EAC TP TC 004 BSMI CNS14336-1
- ✓ 3 years warranty
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BrandMean Well
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SeriesIRM Series
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Power Rating3 Watt
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Output Voltage12 Volt
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Rated Current0.25 Ampere
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Input Voltage85V~305V
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No of Output1
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Dimming ControlNone
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Standards MetBSMI,CB,CE,EAC,TUV,UL
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Operation ModeConstant Voltage
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Operating Temperature-30°C~85°C
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Warranty3 Year
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Length1.46 in
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Width0.94 in
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Height0.59 in
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Weight0.06 lb
::specification::
Frequently Asked Questions
What are the main output specifications of the Mean Well IRM-03-12?
The IRM-03-12 is a 3W encapsulated switching power supply with a regulated 12V DC output. Its rated output current is 250mA, making it suitable for low-power PCB-based equipment that needs a compact internal power source.
What input voltage range does the IRM-03-12 support?
This model supports a universal input range of 85 to 305VAC and 120 to 430VDC. That wide range helps it fit products intended for different mains environments without needing region-specific input versions.
What types of applications is the IRM-03-12 best suited for?
The IRM-03-12 is designed for compact embedded applications where space, low standby power, and board-level integration matter. It is a practical choice for OEM and industrial electronics that need a small enclosed AC-DC power module rather than a larger chassis-style supply.
Can the IRM-03-12 operate in demanding temperature conditions?
Yes, the specified working temperature range is -30°C to +85°C, subject to the output derating curve. That makes it a strong candidate for equipment exposed to a broad range of indoor or controlled industrial temperature conditions.
What protection and safety features are included in the IRM-03-12?
This model includes short circuit, overload, and over voltage protection, with overload behavior specified as hiccup mode with auto-recovery. It is also listed with isolation class II and references multiple safety and EMC standards, which supports use in professionally designed equipment.
How compact is the Mean Well IRM-03-12 compared with larger internal power supplies?
The IRM-03-12 is much smaller than conventional enclosed or open-frame power supplies, with a PCB mounting size of 37 x 24 x 15mm. Its encapsulated format is intended for space-constrained designs that need a low-power internal AC-DC module.
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