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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: weho 3a dinrail power supply
  • Model Number: MDR-40-12
  • Output Power: 40w
  • Output Type: Single
  • Input Voltage: 85~264VAC,120~370VDC
  • Output Voltage: 12V
  • Output Frequency: 47~63Hz
  • Output Current: 3.33A
  • IP code: IP20
  • Ship Term: By air ,By sea , Express(DHL ,fedex ,TNT, Ups EMS)
  • Warranty: 100% responsible for the quality
  • Materail: Aluminum
  • Service: Free Technology inquiry
  • Factory experience: 10 years
  • More service: OEM ODM
  • Brand: WEHO
  • Sample lead time: Within 1 working days
  • Category: 3a dinrail power supply

Packaging & Delivery

Packaging Details: 0.3Kg;42pcs / 13.6Kg / 0.82CUFT
Delivery Detail: instock

 Dinrail 40w single switching power supply 12v 3a dinrail power supply


a.We do have enough ability to produce your customized order

b.Samples are available

c.High quality and competive price .

d.If need samples, pls click this link of our aliexpress shop, much more discount on our store.http://www.aliexpress.com/store/200977

e.2 years warrenty ,buy with confidence



Related Products
  Related Products
FeaturesHigh number of economic type safety with series
3.3V, 5V, 7.5V, 9V, 12V, 15V, 24V, 27V,36V,  48V
Model No.
Date Link
MS Series
MS-15W  MS-25W   MS-35W  MS-50W  MS-60W MS-100W

S Series
S-15W  S-25W  S-35W   S-50W   S-60W  S-75W
S-100W  S-120W  S-145W  S-150W   S-200W   S-201W

S-250W  S-300W  S-350W   S-400W   S-500W  S-600W

SCN Series
SCN-600W   SCN-800W   SCN-1000W  SCN-1500W 
DR Series

DR-30W  DR-45W DR-60W  DR-75W  DR-120W 


MDR Series
MDR-20W  MDR-40W  MDR-60W
LPV Series
LPV-15W  LPV-20W   LPV-30W   LPV-50W   LPV-60W
LPV-100W  LPV-150W   LPV-200W   LPV-250W
NES Series
NES-15W  NES-25W  NES-35W  NES-50W 
NES-75W  NES-100W   NES-350W


Product Description


Model                               OutputTolerance VoltageRipple and NoiseEfficiency
MDR-40-55V, 0-6.0A± 2%80mvp-p78%
NDR-40-1212V, 0-3.3A± 1%120mvp-p86%
MDR-40-1515V, 0-2.66A± 1%120mvp-p88%
MDR-40-2424V, 0-1.7A± 1%200mvp-p88%
1. Universal AC input/ Full range
2. Installed on DIN rail TS35/ 7.5 OR 15
3. Protection: short circuit/ over-load/ over-voltage
4. No load power consumption <0.75W
5. LED indicator for power on
6. DC OK signal output (20W)
7. DC OK relay contact (40W&60W)
8. Cooling by free air condition
9. 100% full load burn-in
10. 2 years warranty
1. AC input voltage range: 85-264VAC; 120-370VDC
2. AC input current: cold start, 30A at 115VAC, 60A at 230VAC
3. DC adjustment range: 0±20% rated output voltage
4. Over-load protection: 105-150% constant current limiting, auto-recovery
5. Over-voltage protection: 125%-150% rated output voltage
6. Setup, rise, hold up time: 500ms,30ms,50ms AT FULL LOAD AND 230VAC
7. Withstand voltage: I/P-O/P:3KVAC, I/P-FG: 1.5KVAC, 1minute
8. Working temperature: -20-60°C@100%, 70°C@50% load
9. DC OK signal: relay contact
10. EMC standards: EN55022 class B, EN61000-3-2,-3, EN50204, EN61000-4-2,3,4,5,6,8,11, EN61204-3, (EN61000-6-2 heavy industry level also for 40W&60W)
11. Connection: I/P: 3 poles, O/P: 3poles screw DIN terminal
12. Dimension (L*W*H): 40*90*100 mm
Please Note:
1. The testing condition for the parameter above is: 230VAC input, rated load, 25°C 70%Rh, Humidity.
2. Error, include the setting error, line stability and load stability.
3. Wave test: adopting "A12" double wire for 20MHZ, and 0.1uF&uF capacitor short-circuit for interrupting.
4. Inlet Voltage Stability test: when is over load, the lowest voltage of inler is representative to the highest voltage.
5. Load stability test: the load is from 0% to 100%, others 60%.
6. Total stability test: the load is from 0% to 100%, others 60%.
7. C2,3,6 must be knocked down.



Packaging & Shipping



we use 4 trips to reinforce our carton,

the international standards package methods guaranteed our goods safety during transportation


we are a professional manufacturer of power supplies ,

all of our products have approved CE ROHS and ISO9001:2008




Company Information


: anniechina3



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