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Mean Well

Mean Well RT-125D Power Supply 125W 5V 24V 12V 8A

miniature sizeeconomicalwithstand 5G vibration and 70°C operationtriple output
SKU RT-125D
$42.87 USD
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Available to order
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Overview

RT-125D is the 5V 24V 12V output model of this series: rated current 8A 3A 2A, rated power 136W, typical efficiency 80%.

Features

  • 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
  • High efficiency, long life and high reliability
  • 3 years warranty

Specifications

RT-125DSpecifications from the official datasheet (2024-11-22 edition)

OUTPUT

OUTPUT NUMBER
CH1 CH2 CH3
DC VOLTAGE
5V 24V 12V
RATED CURRENT
8A 3A 2A
CURRENT RANGENote.3
0 ~ 12A 0 ~ 4A 0 ~ 2A
RATED POWERNote.6
136W
RIPPLE & NOISE (max.)Note.2
80mVp-p 150mVp-p 120mVp-p
VOLTAGE ADJ. RANGE
CH1: 4.75 ~ 5.5V
VOLTAGE TOLERANCENote.3
±2.0% ±8.0% ±6.0%
LINE REGULATIONNote.4
±0.5% ±1.0% ±1.0%
LOAD REGULATIONNote.5
±1.0% ±5.0% ±6.0%
SETUP, RISE TIME
500ms, 20ms/230VAC 1200ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.)
25ms/230VAC 30ms/115VAC at full load

INPUT

VOLTAGE RANGE
88 ~ 132VAC / 176 ~ 264VAC selected by switch 248 ~ 373VDC(Withstand 300VAC surge for 5sec. Without damage)
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY (Typ.)
80%
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: 5.75 ~ 6.75V 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℃)on +5V output
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, EAC TP TC 004, 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(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
2853.1K hrs min. Telcordia SR-332 (Bellcore) ; 373.6K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
199*98*38mm (L*W*H)
PACKING
0.7Kg; 20pcs/14Kg/0.85CUFT
Test conditions and notes10
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
  2. 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. 3. Tolerance : includes set up tolerance, line regulation and load regulation. (In order to meet tolerance, it is recommended that CH1 load > 15% rated current for A, B,D type and CH1 load > 20% rated current for C type.)
  4. 4. Line regulation is measured from low line to high line at rated load.
  5. 5. Load regulation is measured from 20% to 100% rated load, and other output at 60% rated load.
  6. 6. Each output can work within current range. But total output power can't exceed rated output power.
  7. 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. 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. 9. Testing harmonic current at 85%load.
  10. 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

RT-125D Mechanical Specification
Mechanical Specification
RT-125D Block Diagram
Block Diagram
RT-125D Derating Curve
Derating Curve

Downloads

FAQ

Can I use the RT-125D for control hardware that needs both 5V and 24V from one supply?

Yes, this version provides 5V, 24V, and 12V outputs in one triple-output unit. That makes it relevant for control hardware where 5V logic and 24V industrial rails need to coexist.

Is the RT-125D suitable for automation systems that combine 24V devices with 5V logic boards?

It can be suitable because the output set includes both 24V and 5V, plus an additional 12V rail. The unit is rated for 136W total power, and the 5V output is rated at 8A.

Can the RT-125D power a compact embedded controller plus 12V and 24V support electronics?

Yes, that is the type of multi-rail arrangement this model addresses because it provides 5V, 12V, and 24V outputs together. Its compact 199.0 x 98.0 x 38.0 mm form factor also helps in enclosed equipment designs.

Would the RT-125D be appropriate in a machine enclosure with vibration and elevated ambient heat?

The listed features include 5G vibration resistance and operation up to 70°C. Its stated operating range is -25°C to +70°C, which supports use in demanding indoor machine environments.

Can the RT-125D be used in outdoor or washdown conditions?

No IP rating is listed in the provided specifications, so it should not be assumed suitable for exposed outdoor or washdown use. The temperature range is -25°C to +70°C, which supports wide-temperature operation when the supply is kept in a protected enclosure.

What sets the RT-125D apart from the other RT-125 models?

RT-125D is the highest-power listed RT-125 version at 136W, and it provides 5V, 24V, and 12V outputs. By comparison, RT-125A is 131W with 5V, 12V, and -5V, RT-125B is 132W with 5V, 12V, and -12V, and RT-125C is 132.5W with 5V, 15V, and -15V; their 5V current ratings are 12A, 12A, and 10A respectively.

Payment & Security

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Mean Well RT-125D Power Supply 125W 5V 24V 12V 8A
Mean Well

Mean Well RT-125D Power Supply 125W 5V 24V 12V 8A

$42.87 USD

RT-125D is the 5V 24V 12V output model of this series: rated current 8A 3A 2A, rated power 136W, typical efficiency 80%.

Features

  • 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
  • High efficiency, long life and high reliability
  • 3 years warranty
View product

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