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Mean Well RS-15-3.3 Power Supply 15W 3.3V 3A

4.8 (14 reviews)

miniature sizeeconomicalwithstand 5G vibration and 70°C operation

SKU RS-15-3.3

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Select model — 7 in this family

RS-15-3.3

RS-15-3.3 15W 3.3V Backorder

RS-100-3.3 100W 3.3V Low stock

RS-150-3.3 150W 3.3V Backorder

RS-25-3.3 25W 3.3V Backorder

RS-35-3.3 35W 3.3V Backorder

RS-50-3.3 50W 3.3V Backorder

RS-75-3.3 75W 3.3V Backorder

Product variants

Available to order

Overview

RS-15-3.3 is the 3.3V output model of this series: rated current 3A, rated power 9.9W, typical efficiency 72%.

Features

Universal AC input / Full range
Protections: Short circuit / Overload / Over voltage / Over temperature
Cooling by free air convection
LED indicator for power on
100% full load burn-in test
No load power consumption<0.5W
All using 105℃ long life electrolytic capacitors
Withstand 300VAC surge input for 5 second
High operating temperature up to 70℃
Withstand 5G vibration test
High efficiency, long life and high reliability
3 years warranty

Specifications

RS-15-3.3Specifications from the official datasheet (2026-04-10 edition)

OUTPUT

DC VOLTAGE: 3.3V
RATED CURRENT: 3A
CURRENT RANGE: 0 ~ 3A
RATED POWER: 9.9W
RIPPLE & NOISE (max.)^Note.2: 80mVp-p
VOLTAGE ADJ. RANGE: 2.9 ~ 3.6V
VOLTAGE TOLERANCE^Note.3: ±3.0%
LINE REGULATION^Note.4: ±0.5%
LOAD REGULATION^Note.5: ±2.0%
SETUP, RISE TIME: 1000ms, 30ms/230VAC 1000ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.): 70ms/230VAC 12ms/115VAC at full load

INPUT

VOLTAGE RANGE: 85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 72%
AC CURRENT (Typ.): 0.35A/115VAC 0.25A/230VAC
INRUSH CURRENT (Typ.): COLD START 65A / 230VAC
LEAKAGE CURRENT: <2mA / 240VAC

PROTECTION

OVERLOAD: Above 105% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 3.8 ~ 4.45V Protection type : Shut off o/p voltage, clamping by zener diode
OVER TEMPERATURE: Shut down o/p voltage, recovers automatically after temperature goes down

ENVIRONMENT

WORKING TEMP.: -20 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 5G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note 6)

SAFETY STANDARDS: UL62368-1, TUV BS EN/EN62368-1 , AS/NZS 62368.1, EAC TP TC 004, CCC GB4943.1, BSMI CNS15598-1, BIS IS13252(Part1):2010/IEC 60950-1: 2005 approved
WITHSTAND VOLTAGE: I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE: I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/ EN61000-3-2,-3,GB9254 class B,GB17625.1, EAC TP TC 020, CNS15936 Class B
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2, 3, 4, 5, 6, 8,11, BS EN/EN55035, BS EN/EN61000-6-1, light industry level, EAC TP TC 020

OTHERS

MTBF: 4914.9K hrs min. Telcordia SR-332 (Bellcore) ; 1608.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 62.5*51*28mm (L*W*H)
PACKING: 0.13Kg; 108pcs/15Kg/0.8CUFT

Test conditions and notes7

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Line regulation is measured from low line to high line at rated load.
5. Load regulation is measured from 0% to 100% rated load.
6. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 230mm*230mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
7. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

RS-15-3.3 Mechanical Specification — Mechanical Specification

RS-15-3.3 Derating Curve — Derating Curve

Downloads

Certificates3

UL Certificate (RS-15)(EN) PDF Download

CB Certificate (RS-15)(EN) PDF Download

TUV Certificate (RS-15)(EN) PDF Download

Test reports1

Test Report (RS-15-3.3)(EN) PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the RS-15-3.3 for a 3.3V PLC or embedded control board?

Yes, this model is a constant-voltage 3.3V supply rated for up to 3A. That makes it suitable for 3.3V control electronics, embedded boards, and low-power automation circuits that stay within its 9.9W output rating.

Is the RS-15-3.3 a good fit for industrial sensors and logic-level electronics?

It can be a fit for 3.3V sensor hubs, logic circuits, and compact industrial electronics that need a regulated 3.3V output. Buyers should match the total load to the unit's 3A and 9.9W limits.

Can this power supply run a small embedded HMI or single-board controller that uses 3.3V power?

It is intended for low-power 3.3V equipment, so it can work for compact embedded controllers or interface boards that require constant-voltage 3.3V input. The key limit is available output current, which is 3A.

Is the RS-15-3.3 suitable for vibration-prone machine enclosures?

The specifications list 5G vibration (10-500Hz, X/Y/Z axes) and operation up to +70°C with derating per the derating curve. That makes it a reasonable option for protected industrial control enclosures where vibration resistance matters and the load stays within 9.9W.

Can the RS-15-3.3 be used outdoors or in hot equipment cabinets?

The operating temperature range is -20°C to +70°C, with output derating at higher ambient temperatures per the derating curve, so it is designed for a wide temperature span inside equipment. The provided specs do not list an IP rating, so it is better suited to protected indoor enclosures rather than exposed outdoor locations.

Payment & Security

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Model	Power	Voltage	Current
Mean Well RS-15-24 Power Supply 15W 24V 625mA	15W	24V	0.625A	View
Mean Well RS-15-5 Power Supply 15W 5V 3A	15W	5V	3A	View
Mean Well RS-15-48 Power Supply 15W 48V 313mA	15.024W	48V	0.313A	View
Mean Well RS-15-15 Power Supply 15W 15V 1A	15W	15V	1A	View
Mean Well RS-15-12 Power Supply 15W 12V 1.3A	15.6W	12V	1.3A	View

Customer reviews

4.8 Reviews verified for authenticity

5 ★ (12)

4 ★ (1)

3 ★ (1)

2 ★ (0)

1 ★ (0)

Reviewed by 14 customers across the RS series

Exactly as specced
By Daniel R.|2026-06-18✓ Verified Buyer
Model: RS-15-24Quantity: 4
Drop-in replacement, ran cool under full load on our DIN rail. Shipped same day.
Workhorse
By Maria K.|2026-05-28✓ Verified Buyer
Model: RS-50-24Quantity: 12
Bought a dozen for a control panel build — every one perfect.
Solid little supply
By Greg T.|2026-04-30✓ Verified Buyer
Model: RS-100-24Quantity: 2
Does the job. Wish the terminals were a touch bigger.

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Mean Well RS-15-3.3 Power Supply 15W 3.3V 3A

Select model — 7 in this family

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC (Note 6)

OTHERS

Technical drawings

Downloads

Certificates3

Test reports1

Catalogues1

FAQ

Payment & Security

Other RS-15 Models

Customer reviews

Exactly as specced

Workhorse

Solid little supply

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Mean Well RS-15-3.3 Power Supply 15W 3.3V 3A

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