Image shown is a representation only. Exact specifications should be obtained from the product datasheet.

Mean Well IRM-20-3.3 Switching Power Supply 3W 3.3V 4.5A - Encapsulated

Q: Can I use the IRM-20-3.3 to power a 3.3V embedded controller board from AC mains?

Yes, this model is designed for constant-voltage 3.3V output up to 4.5A, with 14.85W total power. That makes it suitable for embedded controller boards, logic backplanes, or communication modules that run on 3.3V DC. The 85-305VAC input supports direct AC-powered equipment designs.

Q: Is the IRM-20-3.3 a good fit for industrial communication or gateway hardware that runs on 3.3V?

It can be a good fit when the 3.3V electronics require no more than 4.5A. The output rating suits low-voltage digital hardware such as gateways, protocol modules, or board-level communications assemblies powered from an internal AC source. Its encapsulated PCB-mount format is intended for integration inside equipment.

Q: Can this power supply support a 3.3V SBC or processor module in an automation system?

Yes, if the processor module and attached 3.3V loads stay within 14.85W and 4.5A. The supply delivers a fixed 3.3V output, which is appropriate for logic-level computing and embedded processing hardware. The compact 52.4 x 27.2 x 24.0 mm footprint also helps in dense controller layouts.

Q: Would the IRM-20-3.3 work for low-voltage digital I/O and logic circuits?

It is intended for 3.3V constant-voltage loads, so it can serve digital I/O, logic, and control circuits that remain within 4.5A. Compared with higher-voltage models in the same family, this version is specifically aimed at low-voltage electronics rather than 12V, 15V, or 24V control rails. Buyers should match both the required voltage and total current draw to the 3.3V, 4.5A rating.

Q: Is the IRM-20-3.3 suitable for outdoor electronic assemblies?

The specified operating temperature range is -30C to +70C, which supports a broad range of internal operating conditions. However, no IP rating is listed in the provided specs, so it should not be assumed to be suitable for direct outdoor exposure. It is better used inside a protected enclosure or equipment housing.

miniature encapsulated type, PCB mouting style

SKU:

IRM-20-3.3

Please for Pricing

Notify me when it's back in stock

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

Brand

Mean Well
Series

IRM Series
Power Rating

14.85 Watt
Output Voltage

3.3 Volt
Rated Current

4.5 Ampere
Input Voltage

85V~305V
Standards Met

BSMI,CB,CE,EAC,TUV,UL
Operation Mode

Constant Voltage
Operating Temperature

-30°C~70°C
Warranty

3 Year
Length

5.24 cm
Width

2.72 cm
Height

2.4 cm
Weight

0.05 kg

File Downloads

::specification::

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Frequently Asked Questions

Can I use the IRM-20-3.3 to power a 3.3V embedded controller board from AC mains?

Yes, this model is designed for constant-voltage 3.3V output up to 4.5A, with 14.85W total power. That makes it suitable for embedded controller boards, logic backplanes, or communication modules that run on 3.3V DC. The 85-305VAC input supports direct AC-powered equipment designs.

Is the IRM-20-3.3 a good fit for industrial communication or gateway hardware that runs on 3.3V?

It can be a good fit when the 3.3V electronics require no more than 4.5A. The output rating suits low-voltage digital hardware such as gateways, protocol modules, or board-level communications assemblies powered from an internal AC source. Its encapsulated PCB-mount format is intended for integration inside equipment.

Can this power supply support a 3.3V SBC or processor module in an automation system?

Yes, if the processor module and attached 3.3V loads stay within 14.85W and 4.5A. The supply delivers a fixed 3.3V output, which is appropriate for logic-level computing and embedded processing hardware. The compact 52.4 x 27.2 x 24.0 mm footprint also helps in dense controller layouts.

Would the IRM-20-3.3 work for low-voltage digital I/O and logic circuits?

It is intended for 3.3V constant-voltage loads, so it can serve digital I/O, logic, and control circuits that remain within 4.5A. Compared with higher-voltage models in the same family, this version is specifically aimed at low-voltage electronics rather than 12V, 15V, or 24V control rails. Buyers should match both the required voltage and total current draw to the 3.3V, 4.5A rating.

Is the IRM-20-3.3 suitable for outdoor electronic assemblies?

The specified operating temperature range is -30C to +70C, which supports a broad range of internal operating conditions. However, no IP rating is listed in the provided specs, so it should not be assumed to be suitable for direct outdoor exposure. It is better used inside a protected enclosure or equipment housing.

Model	Power	Voltage	Current
Mean Well IRM-20-5 Switching Power Supply 3W 5V 4A - Encapsulated	20W	5V	4A	View
Mean Well IRM-20-24 Switching Power Supply 3W 24V 0.9A - Encapsulated	21.6W	24V	0.9A	View
Mean Well IRM-20-15 Switching Power Supply 3W 15V 1.4A - Encapsulated	21W	15V	1.4A	View
Mean Well IRM-20-12 Switching Power Supply 3W 12V 1.8A - Encapsulated	21.6W	12V	1.8A	View

{ "id":8430708490539, "variants" :[{ "context":"default", "variant_id": 45663704973611, "sku":"IRM-20-3.3", "inventory_qty" : 0, "customer" :false, "custom_html" :"\u003ca class=\"text-current logged-out-price logged-out\" href=\"https:\/\/wellforces.co.nz\/customer_authentication\/redirect?locale=en\u0026region_country=NZ\"\u003e\n \u003cspan \u003ePlease \u003c\/span\u003e \u003cspan class=\"login-text\"\u003eLogin\u003c\/span\u003e \u003cspan\u003e for Pricing\u003c\/span\u003e\n \u003c\/a\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }

Mean Well IRM-20-3.3 Switching Power Supply 3W 3.3V 4.5A - Encapsulated

Description

Features

General Specification

Specifications

File Downloads

Payment & Security

Frequently Asked Questions

Other IRM-20 Models

Your cart