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MEAN WELL RD-125-4812 Multiple Output Power Supply, +48 V / +12 V, 138 W
MEAN WELL RD-125-4812 Multiple Output Power Supply, +48 V / +12 V, 138 W
MEAN WELL RD-125-4812 Multiple Output Power Supply, +48 V / +12 V, 138 W

At a glance

Output Channels
CH1 +48 V 2.3 A
Rated Output Power
138 W
Operating Temperature
-25 to +70 °C
Efficiency (typ.)
86%
Dimensions
199 x 98 x 38 mm (L x W x H)
MEAN WELL logoModel RD-125-4812Current model

MEAN WELL RD-125-4812 Multiple Output Power Supply, +48 V / +12 V, 138 W

Price on request

At a glance

Output Channels
CH1 +48 V 2.3 A
Rated Output Power
138 W
Operating Temperature
-25 to +70 °C
Efficiency (typ.)
86%
Dimensions
199 x 98 x 38 mm (L x W x H)

An enclosed supply that gives two DC rails from one unit, for control panels and equipment needing a logic rail alongside a second voltage. Multiple output power supply, +48 V / +12 V, 138 W. Protection against short circuit, overload and over voltage.

Part of the MEAN WELL RD-125 series. Compare all 8 models

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Ask for helpCompatibility, sizing and what else you need.
  • WarrantyManufacturer warranty under MEAN WELL's terms: 3 years. Warranty claims
  • DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery

Overview

What it is

The MEAN WELL RD-125-4812 is a multiple output power supply from the RD-125 series (125 W Dual Output Switching Power Supply), rated +48 V / +12 V, 138 W.

What it is used for

An enclosed dual output supply that provides two DC rails from one unit, for control panels and equipment that need, for example, a logic or relay rail alongside a second supply voltage.

Key features

  • Protection against short circuit, overload and over voltage.
  • Cooling by free air convection.
  • LED indicator for power on.
  • 105 °C long life electrolytic capacitors.
  • Withstands 300 V AC surge input for 5 seconds.
  • Operating temperature up to 70 °C, withstands 5G vibration.

Key Specifications

  • Output Channels: CH1 +48 V 2.3 A; CH2 +12 V 2.3 A.
  • Rated Output Power: 138 W.
  • Input Voltage Range: 88 to 132 V AC / 176 to 264 V AC selected by switch, 248 to 373 V DC.
  • Operating Temperature: -25 to +70 °C (refer to derating curve).

Buying considerations

Size the unit with headroom above the connected load and check the derating information in the datasheet for high ambient temperature or low input voltage. Other models in the same series are listed on this page.

Installation considerations

MEAN WELL treats this unit as a component of the final equipment, so approvals and EMC performance should be confirmed for the complete installation. Wiring and safety details are in the official datasheet linked below.

Features

MEAN WELL RD-125-4812 Multiple Output Power Supply, +48 V / +12 V, 138 W, dimension drawing
Check the datasheet for tolerances.

Size and fit

Dimensions
199 x 98 x 38 mm (L x W x H)
Weight
0.59 kg

Technical specifications

Key facts

What is it?
Multiple output power supplyBrand MEAN WELL, model RD-125-4812
What does it output?
138 W
What input does it accept?
88 to 132 V AC / 176 to 264 V AC selected by switch, 248 to 373 V DC
Which documents are available?
Datasheet, certificate (2) Open documents

RelatedSeriesMEAN WELL RD-125 series, 8 modelsDocumentsAll MEAN WELL documents

Output

Output Channels
CH1 +48 V 2.3 A; CH2 +12 V 2.3 A
Output Current Range
CH1 0 to 2.5 A; CH2 0 to 7 A
Rated Output Power
138 W
Ripple and Noise (max.)
CH1 240 mVp-p; CH2 120 mVp-p
Output Voltage Tolerance
CH1 ±2.0%; CH2 ±10%
Efficiency (typ.)
86%
Output Voltage Adjustment Range
CH1: 45.6 to 52.8 V

Input

Input Voltage Range
88 to 132 V AC / 176 to 264 V AC selected by switch, 248 to 373 V DC
Input Frequency Range
47 to 63 Hz

Protection

Withstand Voltage
I/P-O/P: 3 kV AC, I/P-FG: 2 kV AC, O/P-FG: 0.5 kV AC

Environment

Operating Temperature
-25 to +70 °C (refer to derating curve)
Operating Humidity
20 to 90% RH non-condensing
Cooling
Free air convection

Physical

Dimensions
199 x 98 x 38 mm (L x W x H)
Weight
0.59 kg

Approvals

MTBF
425.8 K hours min. (MIL-HDBK-217F, 25 °C)

Other

Series
RD-125
Warranty
Manufacturer warranty under MEAN WELL's terms: 3 years. How claims work
Product attributes and shipping details
Brand

MEAN WELL
Power Output

138 W

Downloads

Documentation

  • RD-125 series datasheetPublicDatasheet · Family · meanwell.com
    Download
Certificates and compliance documents (2)
  • RD-125 BIS certificate (MEAN WELL)PublicCertificate · Family · meanwell.com
    Download
  • RD-125 CE declaration of conformityPublicCertificate · Family · meanwell.com
    Download

Series documents can differ from your exact model. Report a wrong or missing file

Questions about this product

What input voltage does the RD-125-4812 accept?

MEAN WELL lists 88 to 132 V AC / 176 to 264 V AC selected by switch, 248 to 373 V DC for this model.

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Looking for an alternative?

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