Mean Well Arcade Machine/JAMMA Power Supply - Switching - +12V, +5V, -5V

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£35.99 - £39.89 (Inc. VAT)
£29.99 - £33.24 (Ex. VAT)
Calculated at Checkout


This Mean Well power supply is suitable for various arcade machine/JAMMA projects. Featuring +12v, +5v AND -5v, this power supply is very reliable and manufactured by one of the most trusted names for power supplies - Mean Well.
CE certified and ISO-9001 certificated. This Mean Well power supply can withstand 300v AC surge input for 5 seconds and features short circuit, overload and over voltage protection. Don't settle for cheaper unreliable power supplies - give your arcade project the reliability and performance it deserves with one of these reliable, quality power supplies. 

Product 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°C long life electrolytic capacitors
* Withstand 300VAC surge input for 5 second
* High operating temperature up to 70°C
* Withstand 5G vibration test
* High efficiency, long life and high reliability
* 3 years warranty


Model RT-125A
Output Output Number CH1 CH2 CH3
DC Voltage 5V 12V -5V
Rated Current 12A 5.5A 1A
Current Range
Note 3
0 ~ 12A 0 ~ 6A 0 ~ 1A
Rated Power
Note 6
Ripple & Noise (max)
Note 2
80mVp-p 120mVp-p 80mVp-p
Voltage Adj. Range CH1: 4.75 ~ 5.5V
Voltage Tolerance
Note 3
±2.0% +9,-5% +6,-10%
Line Regulation ±0.5% ±1.0% ±1.0%
Load Regulation ±1.0% ±3.0% ±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 5 sec. 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 EN62368-1 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 EN55032 (CISPR32) Class B, EN61000-3-2,-3, BS EN/ BS EN/ EAC TP TC 020
EMC Immunity Compliance to EN61000-4-2,3,4,5,6,8,11, EN61000-6-2 (EN50082-2), heavy industry level, criteria A, BS EN/ BS EN/ BS EN/ EAC TP TC 020
Others MTBF 209.3Khrs min.
MIL-HDBK-217F (25 )
Dimension 199*98*38mm (L*W*H)
Packing 0.7Kg; 20pcs/14Kg/0.85CUFT

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25°C of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
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. 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
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. The ambient temperature derating of 3.5°C/1000m with fanless models and of 5°C/1000m with fan models for operating altitude higher than 2000m(6500ft).
* Product Liability Disclaimer: For detailed information, please refer to


  • 5
    Good quality, great price.

    Posted by Lee Mitchell on 23rd Dec 2021

    Good build quality, works exactly as expected and delivered well package very quickly.
    Many thanks Arcadeworlduk.

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