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Mean Well RID-125-1248 AC-DC Dual output enclosed power supply 125W 2.3A

Name: Mean Well RID-125-1248 AC-DC Dual output enclosed power supply 125W 2.3A
Brand: Mean Well
SKU: RID-125-1248
Price: 45.45 USD
Availability: InStock

miniature sizeeconomicalwithstand 5G vibration and 70°C operationisolated dual output

SKU RID-125-1248

$45.45 USD

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In stock

Overview

RID-125-1248 is the CH1: 12V / CH2: 48V output model of this series: rated current CH1: 2.3A / CH2: 2.3A, rated power 138W, typical efficiency 85%.

Features

Isolated output & GND for CH1,CH2
AC input range selectable by switch
Withstand 300VAC surge input for 5 seconds
Protections: Short circuit / Overload / Over voltage
All using 105℃ long life electrolytic capacitors
Withstand 5G vibration test
LED indicator for power on
100% full load burn-in test
High realibility
3 years warranty

Specifications

RID-125-1248Specifications from the official datasheet (2025-12-19 edition)

OUTPUT

OUTPUT NUMBER: CH1 / CH2
DC VOLTAGE: CH1: 12V / CH2: 48V
RATED CURRENT: CH1: 2.3A / CH2: 2.3A
CURRENT RANGE^Note.3: CH1: 0~ 7A / CH2: 0 ~ 2.5A
RATED POWER^Note.6: 138W
RIPPLE & NOISE (max.)^Note.2: CH1: 120mVp-p / CH2: 240mVp-p
VOLTAGE ADJ. RANGE: CH1: 11.4 ~ 13.2V
VOLTAGE TOLERANCE^Note.3: CH1: ±2.0% / CH2: ±8.0%
LINE REGULATION^Note.4: CH1: ±0.5% / CH2: ±1.0%
LOAD REGULATION^Note.5: CH1: ±1.0% / CH2: ±5.0%
SETUP, RISE TIME: 500ms, 20ms/230VAC 1200ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.): 36ms/230VAC 30ms/115VAC at full load

INPUT

VOLTAGE RANGE: 88 ~ 132VAC / 176 ~ 264VAC selected by switch 248 ~ 373VDC(300VAC peak 5sec. No damage)
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY(Typ.): 85%
AC CURRENT (Typ.): 3A/115VAC 2A/230VAC
INRUSH CURRENT (Typ.): COLD START 50A/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: CH1: 13.8 ~ 16.2V Protection type : Hiccup mode, recovers automatically after fault condition is removed

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℃)on CH1 output
VIBRATION: 10 ~ 500Hz, 5G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note 7)

SAFETY STANDARDS: UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004 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(Note 9),-3, 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: 2755.4K hrs min. Telcordia SR-332 (Bellcore) ; 425.8K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 199*98*38mm (L*W*H)
PACKING: 0.59Kg; 20pcs/12.85Kg/0.85CUFT

Test conditions and notes10

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.(In order to meet tolerance, it is recommended that CH1 load > 5% rated current.)
4. Line regulation is measured from low line to high line at rated load.
5. Load regulation is measured from 20% to 100% rated load, and other output at 60% rated load.
6. Each output can work within current range. But total output power can't exceed rated output power.
7. 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 )
8. Length of set up time is measured at cold first start. Turning ON/OFF the power supply very quickly may lead to increase of the set up time.
9. Testing harmonic current at 85%load.
10. 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

RID-125-1248 Mechanical Specification — Mechanical Specification

RID-125-1248 Block Diagram — Block Diagram

RID-125-1248 Derating Curve — Derating Curve

Downloads

Certificates1

Mean Well EAC Certificate PDF Download

FAQ

Can I use the RID-125-1248 for 12V industrial electronics with a lighter current draw?

It is suitable for 12V industrial electronics where the load fits within its 2.3A output current and 138W rating. That makes it a better match for lighter 12V control loads than for higher-current 12V systems.

Is the RID-125-1248 a fit for 12V embedded devices or compact automation subsystems?

Yes, this power supply matches 12V embedded or compact automation subsystems that do not need more than 2.3A. Its enclosed format also supports use inside equipment housings or control cabinets.

Can the RID-125-1248 be used for 12V sensing, alarm, or interface hardware?

It can work for 12V sensing, alarm, or interface hardware when the power budget stays within 138W and the current draw stays within 2.3A. Buyers comparing 12V models should note that this version provides less output current than the 3.7A sibling.

Does the RID-125-1248 support harsh indoor environments?

The specified operating range is -20°C to +70°C, so it is built for more demanding indoor equipment environments than room-only supplies. No IP rating is provided in the specs, so direct outdoor or wet-location use is not established here.

How does the RID-125-1248 compare with related RID series units?

The listed alternatives are RID-125-1205 at 125.4W, 12V/5V; RID-125-1224 at 133.2W, 12V/24V; RID-125-2405 at 125.4W, 24V/5V; RID-125-2448 at 144W, 24V/48V. The RID-125-1248 is the 138W, 12V/48V option in this list with 2.3A output current per channel.

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Mean Well RID-125-1248 AC-DC Dual output enclosed power supply 125W 2.3A

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC (Note 7)

OTHERS

Technical drawings

Downloads

Certificates1

FAQ

Payment & Security

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Mean Well RID-125-1248 AC-DC Dual output enclosed power supply 125W 2.3A

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