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Mean Well IRM-20-12 Switching Power Supply 3W 12V 1.8A - Encapsulated
Description
Description
Features
| Universal AC input / Full range |
| No load power consumption < 0.1W |
| Protections: Short circuit / Overload / Over voltage |
| Miniature size, high power density |
| Cooling by free air convection |
| Isolation class II |
| Fully isolated plastic case |
| Withstand 5G vibration test |
| Low cost, high reliability |
| 100% full load burn-in test |
| 3 years warranty |
General Specification
| AC input voltage range | 85~264VAC; 120~370VDC |
| AC inrush current (max.) | Cold start, 20A at 115VAC, 40A at 230VAC |
| Setup, rise, hold up time | 1000ms, 20ms, 40ms at full load and 230VAC |
| Overload protection | 115%~160% |
| Over voltage protection | 115%~135% rated output voltage |
| Withstand voltage | I/P-O/P: 3kVAC |
| Working temperature | -30~+70°C (refer to output derating curve) |
| Leakage current | Less than 0.75mA at 240VAC |
| Safety standards | UL60950-1, TUV EN60950-1 approved |
| EMC standards | EN55022 class B, EN61000-3-2,3, EN61000-4-2,3,4,5,6,8,11 |
| Connection | 4 industrial pins |
| Dimension (LxWxH) | 52.4x 27.2x 24 |
| Vibration | 10~500Hz, 5G 10min./1 cycle, period for 60 min. each along X, Y, Z axes |
Specifications
Specifications
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BrandMean Well
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SeriesIRM Series
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Power Rating21.6 Watt
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Output Voltage12 Volt
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Rated Current1.8 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~70°C
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Warranty3 Year
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Length2.06 in
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Width1.07 in
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Height0.94 in
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Weight0.11 lb
File Downloads
File Downloads
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Payment & Security
Payment methods
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Frequently Asked Questions
Can I use the IRM-20-12 for 12V PLC accessories, control electronics, or automation modules?
Yes, if the equipment needs a constant 12V input and the total demand stays within 1.8A and 21.6W. That fits many compact PLC accessories, control boards, and automation electronics that run on a 12V DC rail. The wide 85-305VAC input is also useful for equipment deployed across varying mains conditions.
Is the IRM-20-12 suitable for 12V embedded systems with multiple sensors or communication devices?
It can be a good fit when the complete 12V load remains at or below 1.8A. That gives more current headroom than the lower-power 12V IRM models for embedded systems with several 12V subsystems. Its PCB-mount encapsulated design is aimed at internal integration inside finished equipment.
Can this model power 12V industrial monitoring, HMI support, or panel electronics?
Yes, for compact 12V monitoring and panel electronics that stay within 21.6W. The 52.4 × 27.2 × 24.0 mm package keeps the supply relatively compact for board-level use. It is a better match for moderate 12V loads than for high-current motors, heaters, or other heavier 12V equipment.
Is the IRM-20-12 appropriate for indoor industrial environments with temperature variation?
The rated operating temperature is -30°C to +70°C, which supports many protected industrial environments. No IP rating is listed in the provided specs, so the specs do not verify exposed outdoor suitability. Based on the stated data, it should be treated as an enclosed internal power supply module.
How does the IRM-20-12 compare with other 12V models in the IRM series?
The provided 12V siblings are IRM-01-12 and IRM-01-12S at 1W and 0.08A, IRM-02-12 and IRM-02-12S at 2W and 167A, IRM-03-12 and IRM-03-12S at 3W and 250A, IRM-05-12 at 5.04W and 0.42A, IRM-10-12 at 10.2W and 0.85A, IRM-15-12 at 15W and 1.25A, IRM-20-12 at 21.6W and 1.8A, IRM-30-12 and IRM-30-12ST at 30W and 2.5A, IRM-45-12 and IRM-45-12ST at 45.6W and 3.8A, IRM-60-12 and IRM-60-12ST at 60W and 5A, and IRM-90-12 and IRM-90-12ST at 80.4W and 6.7A. IRM-20-12 sits above the 15W, 1.25A model and below the 30W, 2.5A model in the 12V range.
Other IRM-20 Models
4 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well IRM-20-5 Switching Power Supply 3W 5V 4A - Encapsulated | 20W | 5V | 4A | Indoor | $10.77 | View |
| Mean Well IRM-20-3.3 Switching Power Supply 3W 3.3V 4.5A - Encapsulated | 14.85W | 3.3V | 4.5A | Indoor | $10.85 | View |
| Mean Well IRM-20-24 Switching Power Supply 3W 24V 0.9A - Encapsulated | 21.6W | 24V | 0.9A | Indoor | $10.77 | View |
| Mean Well IRM-20-15 Switching Power Supply 3W 15V 1.4A - Encapsulated | 21W | 15V | 1.4A | Indoor | $10.77 | View |
