Over 15 years experience of providing support of MEAN WELL Power Supplies
Image shown is a representation only. Exact specifications should be obtained from the product datasheet.
Mean Well RQ-125D Power Supply 125W 5V 24V 12V -12 8A
Overview
RQ-125D is the CH1: 5V, CH2: 12V, CH3: 24V, CH4: -12V output model of this series: rated current CH1: 8A, CH2: 2.5A, CH3: 2A, CH4: 0.5A, rated power 124W, 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
OUTPUT
- OUTPUT NUMBER
- CH1, CH2, CH3, CH4
- DC VOLTAGE
- CH1: 5V, CH2: 12V, CH3: 24V, CH4: -12V
- RATED CURRENT
- CH1: 8A, CH2: 2.5A, CH3: 2A, CH4: 0.5A
- CURRENT RANGENote.3
- CH1: 0 ~ 12A, CH2: 0 ~ 4A, CH3: 0 ~ 2.5A, CH4: 0 ~ 1A
- RATED POWERNote.6
- 124W
- RIPPLE & NOISE (max.)Note.2
- CH1: 80mVp-p, CH2: 120mVp-p, CH3: 150mVp-p, CH4: 80mVp-p
- VOLTAGE ADJ. RANGE
- CH1: 4.75 ~ 5.5V
- VOLTAGE TOLERANCENote.3
- CH1: ±2.0%, CH2: +10,-1%, CH3: ±8.0%, CH4: ±5.0%
- LINE REGULATIONNote.4
- CH1: ±0.5%, CH2: ±1.0%, CH3: ±1.0%, CH4: ±1.0%
- LOAD REGULATIONNote.5
- CH1: ±1.0%, CH2: ±3.0%, CH3: ±6.0%, CH4: ±2.0%
- 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 (Note 7)
- 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
- 2535.9K hrs min. Telcordia SR-332 (Bellcore) ; 377.7K 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. 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 > 20% rated current for B, C type and CH1 load > 10% rated current for D type.)
- 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
Downloads
FAQ
Can I use the RQ-125D in an automation system that needs 5V logic plus 24V and +/-12V rails?
Yes. The RQ-125D is a quad output constant voltage power supply with a 5V main output rated at 8A and a total power rating of 124W. Its output set is suited to systems that combine low-voltage logic with 24V and -12V or 12V support rails in one enclosure.
Is the RQ-125D a good choice for industrial test or data-acquisition equipment with multiple voltage rails?
It is designed for multi-rail equipment rather than a single-output load. The 5V rail is rated for 8A, while the product also includes 24V, 12V, and -12V outputs under a 124W total power rating. That makes it relevant for mixed digital and control-oriented equipment that needs several DC rails from one AC-fed supply.
Can the RQ-125D support embedded control hardware in a compact cabinet?
It can when the hardware needs a 5V logic rail and additional 24V and +/-12V rails. The housing measures 199.0 x 98.0 x 38.0 mm and weighs 0.7 kg, so it fits applications where space is tighter than larger industrial power supplies. The input range is 88-132VAC or 176-264VAC selected by a switch, supporting broad AC input conditions.
Is the RQ-125D meant for indoor industrial environments or outdoor exposure?
The listed operating temperature range is -25°C to +70°C, and the unit is specified to withstand 5G vibration. Those specs support use in industrial indoor environments with temperature variation and vibration. No IP rating is provided, so the available data does not confirm outdoor or washdown suitability.
What are the main differences between the RQ-125D and the other RQ series siblings listed here?
The RQ-125D is rated at 124W with a 5V main output at 8A. The listed siblings are RQ-125B at 120W and 5V 11A, RQ-125C at 122.5W and 5V 10A, RQ-50B at 45.5W and 5V 5A, RQ-50C at 50W and 5V 5A, RQ-50D at 53.4W and 5V 3A, RQ-65B at 62.5W and 5V 6A, RQ-65C at 65W and 5V 5A, RQ-65D at 68W and 5V 4A, RQ-85B at 80.7W and 5V 7A, RQ-85C at 82.5W and 5V 7A, and RQ-85D at 84W and 5V 6A. RQ-125ND is listed but its specs were not included in the source data.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Other RT Series Models
50 other modelsPlease log in to write a review.
Write a review
Reviews are checked before publishing. By submitting you confirm this is your genuine experience with this product.
Submitting your review…
It's published and now helps other buyers.
We're checking it and it'll appear shortly.
Please try again.
