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Mean Well IRM-03-12S Switching Power Supply 3W 12V 250mA - Encapsulated

miniature encapsulated typeSMD style

SKU IRM-03-12S

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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

Frequently Asked Questions

Can I use the IRM-03-12S for a small 12V PLC interface or relay logic board?

Yes, it is a constant-voltage 12V unit rated at 3W, which fits low-power 12V control electronics. It is intended for smaller interface and logic loads rather than higher-power 12V equipment.

Is the IRM-03-12S suitable for embedded 12V sensor hubs or monitoring modules?

It can be a fit when the embedded load needs regulated 12V and stays within the 3W output rating. The SMD style package and 37.0 × 24.0 × 16.0 mm size support compact board-level power designs.

Can this model be used in industrial HMIs or automation accessories that need a small 12V supply?

Yes, for low-power 12V accessory electronics, the IRM-03-12S provides constant-voltage output from an 85-305VAC input. That wide input range is useful for equipment intended for different AC supply regions.

Would the IRM-03-12S make sense for a small 12V communications or signaling module?

It can, provided the module is a low-power 12V load within the 3W rating. The encapsulated construction is aimed at internal use in compact electronic assemblies.

Is the IRM-03-12S rated for outdoor use?

The operating temperature range is -30°C to +85°C, so temperature capability is broad. However, no IP rating is listed in the provided specs, so the data does not confirm suitability for exposed outdoor environments.

How does the IRM-03-12S compare with other 12V IRM options?

In the 12V group, IRM-01-12 and IRM-01-12S are 1W, 12V, 0.08A; IRM-02-12 and IRM-02-12S are 2W, 12V, 167A; IRM-03-12 and IRM-03-12S are 3W, 12V, 250A; IRM-05-12 is 5.04W, 12V, 0.42A; IRM-10-12 is 10.2W, 12V, 0.85A; IRM-15-12 is 15W, 12V, 1.25A; IRM-20-12 is 21.6W, 12V, 1.8A; IRM-30-12 and IRM-30-12ST are 30W, 12V, 2.5A; IRM-45-12 and IRM-45-12ST are 45.6W, 12V, 3.8A; IRM-60-12 and IRM-60-12ST are 60W, 12V, 5A; and IRM-90-12 and IRM-90-12ST are 80.4W, 12V, 6.7A. The IRM-03-12S sits near the low-power end of that 12V range.

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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

Mean Well IRM-03-12S Switching Power Supply 3W 12V 250mA - Encapsulated

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Mean Well IRM-03-12S Switching Power Supply 3W 12V 250mA - Encapsulated

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