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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: steadypower
  • Model Number: S-120-12
  • Output Power: 101 - 200W
  • Output Type: Single
  • Input Voltage: 110/220VAC selected by switch
  • Output Voltage: 12 V
  • Output Frequency: 47~63HZ
  • Output Current: 10A
  • Efficiency: 83%
  • Certification: CE
  • Guarantee: 2 year
  • Case material: Aluminium
  • Dimension: 199*98*38
  • G.W: 0.65kg

Packaging & Delivery

Packaging Details: it is packed by vacuum plastic bag to provent moisture and then put into the inner box, 30 pcs to a neutral carton.
Delivery Detail: Shipped in 7 days after payment

Welcome,my friend! Glad to introduce   CE certification high quality led power supply 12v 10a psu  , 220v ac to 12v dc transformer 120w switch power supply. If you have any questions, please don't hesitate to ask me.

 We control every aspect                                          

s Series







• Non-PFC, complete protections 
• Economical medium to high power models with safety certificate

High number of economic type safety with series

3.3V, 5V, 7.5V, 9V, 12V, 15V, 24V, 27V,36V, 48V














Here is 220v 12v ac transformer  120W switch power supply !   

Product Description


Features :


• AC input range selectable by switch 

• Protections:Short circuit/Over load/Over voltage 

• Cooling by free air convection 

• 100% full load burn-in test 

• Fixed switching frequency at 83KHz 

• 2 years warranty

Model S-120-5S-120-7.5S-120-12S-120-15S-120-24S-120-48
OutputDC Voltage5V7.5V12V15V24V48V
Rated Current24A16A10A8A5A2.5A
Current Range0~24A0~160~10A0~8A0~5A0~2.5A
Rated Power120W120W120W120W120W120W
Ripple & Noise (max.) Note.2100mVp-p125mVp-p125mVp-p125mVp-p150mVp-p150mVp-p
Voltage Adj. Range4.5~5.5V6.75~8.25V10.8~13.2V13.5~16.5V21.6~26.4V43.2~52.8V
Voltage Tolerance Note.3±2.0%±1.0%±1.0%±1.0%±1.0%±1.0%
Line Regulation±0.5%±0.5%±0.5%±0.5%±0.5%±0.5%
Load Regulation±1.0%±0.5%±0.5%±0.5%±0.5%±0.5%
Setup,Rise time1000ms, 30ms at full load
Hold time (Typ.)20ms at full load
InputVoltage Range88 ~ 132VAC/176 ~ 264VAC selected by jumper or switch          248 ~ 370VDC
Frequency Range47~63HZ
AC Current(Typ.)3.15A/115VAC          1.5A/230VAC
Inrush Current (Typ.)COLD START 20A/115VAC          40A/230VAC
Leakage Current<1mA / 240VAC
ProtectionOver Load105 ~ 150% rated output power
Protection type : Hiccup mode, recovers automatically after fault condition is removed

Over Voltage  

5.75 ~ 6.75V  8.63~10.13V13.8 ~ 16.2V  17.25 ~ 20.25V  27.6 ~ 32.4V  55.2~64.8
Protection type : Hiccup mode, recovers automatically after fault condition is removed    
EnvironmentWorking Temperature-10 ~ +60°c (Refer to "Derating Curve" )
Working Humidity20~90% RH  Non-condensing
Storage temp.& humidity-20~+85°C, 10~95%RH
Temp. coefficient±0.03%/°C (0~50°C)
Vibration10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

Safety & EMC

(Note 4.)

Safety StandardsUL1012, UL60950-1, TUV EN60950-1, CCC GB4943 approved
Withstand VoltageI/P-O/P:1.5KVAC     I/P-FG:1.5KVAC     O/P-FG:0.5KVAC
Isolation ResistanceI/P-O/P, I/P-FG, O/P-FG:100M Ohms/500VDC/ 25°c / 70% RH
EMC EmissionCompliance to  EN55022 (CISPR22) Class B, EN61000-3-2,-3
EMC ImmunityCompliance to EN61000-4-2,3,4,5,6,8,11, EN55024, light industry level,  criteria A
OthersMTBF314.9K hrs min.      MIL-HDBK-217F (25 °c)
Dimension199*98*38mm (L*W*H)
Packing0.65Kg; 20pcs/14.2Kg/0.8CUFT

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.

4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives.

Important Notice

* These products are Constant Voltage LED Drivers. For dimming purpose, please equip with compatible low voltage dimmer switches and arrange your circuit in the following sequence:

Mains – LED Driver – Low Voltage Dimmer – Low Voltage LEDs

Packaging & Shipping

we use 4 trips to reinforce our carton,the international standards package methods guaranteed our goods safety during transportation

Company Information

 we are a professional manufacturer of power supplies ,all of our products have approved CE

Promise & More items

Our Promise:

Customers satisfaction, provide good quality and reasonable price be to engaged in 100% of us

The above sample photos are coming from main production.

Thanks and the first cooperation to be expected.

How to pay?

1.T/T 30% in advance, T/T 70% before delivery.

2.Others: Paypal, Western union, Money gram, L/C

Production cycle:

1. About big order: Our producing capacity is 50,000-80,000pcs each month, your order will according to real producing    planning, finished in 2-4 weeks.

2. About sample: if sample do not have stock or it is customize type, we will need 7-21days to ready, include purchaing material, producing time and delivery time.

About certificates:

If you need UL, TUV, GS, CB, or others certificate in your market, pls tell us, we willing to invest in certificates, and we are able to do, but according to your quantity.

What is your MOQ?

According to G.W. we will have different MOQ in each models, total G.W. should heavier than 21KGS, because we'll have big discount in delivery freight if G.W. ≥21KGS.

More items you may interested, kindly click links:


                   S-350-12( 350W 12V)  single output                                          SFS-100-24 (100W 24V) with Waterproof



   MDR-100-24 DIN rail type              Adapter (24W 12V)               Power Supply 120w12v           NES-350-24 (350W 24V)




CE certification high quality led power supply 12v 10a switch power supply , 220v ac to 12v dc transformer 120w psu

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