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Mean Well RS-50-12 Power Supply 50W 12V 4.2A

Name: Mean Well RS-50-12 Power Supply 50W 12V 4.2A
Brand: Mean Well
SKU: RS-50-12
Price: 18.74 USD
Availability: InStock

miniature sizeeconomicalwithstand 5G vibration and 70°C operation

SKU RS-50-12

$18.74 USD

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Select model — 7 in this family

RS-50-12

RS-15-12 15W 12V In stock$10.75 USD

RS-25-12 25W 12V In stock$12.61 USD

RS-35-12 35W 12V In stock$17.32 USD

RS-50-12 50W 12V In stock$18.74 USD

RS-75-12 75W 12V In stock$22.70 USD

RS-100-12 100W 12V In stock$30.44 USD

RS-150-12 150W 12V In stock$32.60 USD

Product variants

In stock

Overview

RS-50-12 is the 12V output model of this series: rated current 4.2A, rated power 50.4W, typical efficiency 84.5%.

Features

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

Specifications

RS-50-12Specifications from the official datasheet (2024-11-22 edition)

OUTPUT

DC VOLTAGE: 12V
RATED CURRENT: 4.2A
CURRENT RANGE: 0 ~ 4.2A
RATED POWER: 50.4W
RIPPLE & NOISE (max.)^Note.2: 120mVp-p
VOLTAGE ADJ. RANGE: 10.8 ~ 13.2V
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION^Note.4: ±0.5%
LOAD REGULATION^Note.5: ±0.5%
SETUP, RISE TIME: 500ms, 30ms/230VAC 1200ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.): 60ms/230VAC 14ms/115VAC at full load

INPUT

VOLTAGE RANGE: 88 ~ 264VAC 125 ~ 373VDC (Withstand 300VAC surge for 5sec. Without damage)
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY(Typ.): 84.5%
AC CURRENT (Typ.): 1.3A/115VAC 0.8A/230VAC
INRUSH CURRENT (Typ.): COLD START 33A/230VAC
LEAKAGE CURRENT: <2mA / 240VAC

PROTECTION

OVERLOAD: 110 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 13.8 ~ 16.2V Protection type : Hiccup mode, recovers automatically after fault condition is removed

ENVIRONMENT

WORKING TEMP.: -25 ~ +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

SAFETY STANDARDS: UL62368-1, TUV BS EN/EN62368-1 , AS/NZS 62368.1 , EAC TP TC 004, CCC GB4943.1 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
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11; BS EN/EN55035, BS EN/EN61000-6-2 (BS EN/EN50082-2), heavy industry level, EAC TP TC 020

OTHERS

MTBF: 2956.7K hrs min. Telcordia SR-332 (Bellcore) ; 575.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 99*97*36mm (L*W*H)
PACKING: 0.41Kg; 45pcs/19.5Kg/0.94CUFT

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 360mm*360mm 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-50-12 Mechanical Specification — Mechanical Specification

RS-50-12 Derating Curve — Derating Curve

Downloads

Certificates4

UL Certificate (RS-50)(EN) PDF Download

CB Certificate (RS-50)(EN) PDF Download

TUV Certificate (RS-50)(EN) PDF Download

EMC Certificate (RS-50)(EN) PDF Download

Test reports1

Test Report (RS-50-12)(EN) PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the RS-50-12 for a 12V HMI, control panel accessory, or small automation device?

Yes, if the equipment needs a constant 12V supply and draws no more than 4.2A or 50.4W. That makes it appropriate for many compact industrial and automation loads built around a 12V DC input.

Is the RS-50-12 suitable for 12V industrial sensors, relays, or alarm electronics?

It is suitable for 12V constant-voltage devices as long as the total load remains within 4.2A and 50.4W. It fits low-power control and monitoring hardware that is specified for 12V DC operation.

Can this power supply run a 12V embedded or communications device in a machine cabinet?

It can, provided the device requires 12V constant voltage and stays under 4.2A with 50.4W total demand. The wide 88-264VAC input also makes it practical for equipment deployed across different AC mains environments.

How does the RS-50-12 compare with other 12V RS series models?

The RS-50 series includes 12V models such as the RS-15-12 (15.6W, 1.3A), RS-25-12 (25.2W, 2.1A), RS-35-12 (35W, 3A), RS-50-12 (50.4W, 4.2A), RS-75-12 (72W, 6A), RS-100-12 (102W, 8.5A), and RS-150-12 (150W, 12.5A). The RS-50-12 is the mid-range 12V option between the 35W and 72W models.

Can the RS-50-12 be used in hot, cold, or vibration-prone indoor industrial settings?

The unit is rated for -25°C to +70°C operation and is specified to withstand 5G vibration. No IP rating is provided, so the specs support use in protected indoor equipment environments rather than open outdoor exposure.

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Mean Well RS-50-12 Power Supply 50W 12V 4.2A

Select model — 7 in this family

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC

OTHERS

Technical drawings

Downloads

Certificates4

Test reports1

Catalogues1

FAQ

Payment & Security

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Mean Well RS-50-12 Power Supply 50W 12V 4.2A

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