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Mean Well RQ-125B Power Supply 125W 5V 12V -5V -12V 11A
Overview
RQ-125B is the CH1: 5V, CH2: 12V, CH3: -5V, CH4: -12V output model of this series: rated current CH1: 11A, CH2: 4.5A, CH3: 1A, CH4: 0.5A, rated power 120W, typical efficiency 77%.
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: -5V, CH4: -12V
- RATED CURRENT
- CH1: 11A, CH2: 4.5A, CH3: 1A, CH4: 0.5A
- CURRENT RANGENote.3
- CH1: 0 ~ 12A, CH2: 0 ~ 4.5A, CH3: 0 ~ 1A, CH4: 0 ~ 1A
- RATED POWERNote.6
- 120W
- RIPPLE & NOISE (max.)Note.2
- CH1: 80mVp-p, CH2: 120mVp-p, CH3: 80mVp-p, CH4: 80mVp-p
- VOLTAGE ADJ. RANGE
- CH1: 4.75 ~ 5.5V
- VOLTAGE TOLERANCENote.3
- CH1: ±2.0%, CH2: +10,-1%, CH3: +6,-10%, 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.)
- 77%
- 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-125B for an industrial controller that needs 5V logic plus +/-12V and -5V rails?
Yes, this is a quad output supply with 5V, 12V, -5V, and -12V outputs. The main 5V output is rated for 11A, and the total output power is 120W. That makes it suitable for mixed-voltage control electronics built around a heavier 5V load.
Is the RQ-125B a fit for test equipment or instrumentation with several low-voltage rails?
It can fit instrumentation that needs multiple regulated rails from one supply, especially where the primary demand is on 5V up to 11A. The total rating is 120W, and the unit uses constant voltage operation. Its quad output design is the main differentiator for multi-rail electronics.
Would this power supply work for automation hardware in a vibration-prone machine environment?
The feature list states that it can withstand 5G vibration and 70C operation. Combined with a -25C to +70C operating range and 120W output, that makes it more appropriate for industrial environments than lighter-duty indoor electronics supplies with no vibration statement. It still needs an application that matches the listed outputs.
Can the RQ-125B support a larger 5V embedded system than the smaller RQ models?
Yes, its main 5V output is rated for 11A, which is higher than the 5A, 6A, 7A, 8A, and 10A figures shown on the smaller listed siblings. With 120W total output, it is positioned for heavier 5V-centric electronics that also need additional rails. The input range is 88-132VAC / 176-264VAC selected by switch.
Is the RQ-125B suitable for outdoor use or only for controlled enclosures?
The listed operating temperature range is -25C to +70C. No IP rating is provided in the specs, so the data does not define outdoor, rain, or dust-ingress suitability. From the published information, temperature and vibration are specified, while ingress protection is not.
How does the RQ-125B compare with the other RQ series options listed here?
Within the provided sibling list, RQ-50B is 45.5W with 5V and 5A, RQ-50C is 50W with 5V and 5A, RQ-50D is 53.4W with 5V and 3A, RQ-65B is 62.5W with 5V and 6A, RQ-65C is 65W with 5V and 5A, RQ-65D is 68W with 5V and 4A, RQ-85B is 80.7W with 5V and 7A, RQ-85C is 82.5W with 5V and 7A, RQ-85D is 84W with 5V and 6A, RQ-125C is 122.5W with 5V and 10A, and RQ-125D is 124W with 5V and 8A. RQ-125ND is listed as a sibling, but no wattage or current is provided in the supplied data.
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