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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: ETOP
  • Model Number: HPP-U401SxxA/HPP-U451SxxA
  • Output Power: 401 - 500W
  • Output Type: Single
  • Input Voltage: 100-240VAC
  • Output Voltage: +24Vdc +27Vdc +48Vdc +52Vdc
  • Output Frequency: 47-63Hz
  • Output Current: 18A 16.7A 9.37 A 8.65 A
  • Ripple&Noise: 270-520mVp-p
  • Efficiency: 90%
  • MTBF: ≥ 1207.4K hrs. ( 25℃ )
  • working tem.: 0~+40 degree
  • built-in active PFC function: 0.95
  • dimession: 220*102*52mm

Packaging & Delivery

Packaging Details PP bag, small carton box and standard carton box
Delivery Time 15 working days


1.AC full range
2.100% burn-in test
3.High reliability & ZVS technology
4.3 years warranty
5.Cooling by free air convection

HPP-U401S24A 400W-450W power supply for LED, street light, stage lighting & automatical machine  

Product Description



ModelOutputR&NTol  Line
LPP-U401S27A 27V/14.8A270mVp-p±3%±1%±5%>90%
Input voltage range & frequency range90-264VACor127-370VDC     47-63Hz
Input current(Max)3.6A/115VAC    1.8A/230VAC
Leakage current(Max) 0.75mA/240VAC
Set up ,rise time2000mS,30mS/230VAC    3000mS,30mS/115VAC(full load)
Hold up time50mS/230VAC   15mS/115VAC(full load)
Working tem.& Humidity-30~+60℃(please refer to the "deduction" curve) 
storage tem.& Humidity-40~+85℃,10-95%RH
Tem. coefficicient±0.03%/℃(0-50℃)
Withstand pressureI/P-O/P:3KVAC  I/P-PG:1.5KVAC  O/P-PG:0.5KVAC
Short circuit protection longtime short circuit, recovers automatically after fault
condition is moved 
Over load protection 110%-175% Rated output current,(constant voltage)
MTBF≥711Khrs   MIL-HDBK-217F(25℃)
PackagingCould be customised
Note (1) All parameters NOT specially mentioned are measured at  230VAC input,rated load and 25℃, 70% RH temperature.AC intent voltage testing: measured at 50% loading and at the end of  connector.     
(2) Ripple & noise are measured at 20MHz of bandwidth by using a 20"twisted par-wire terminated with a 0.1uF & 47uF parallel capacitor.    
(3) Tolerance:includes set up toletance,line regulation and load regulation.
(4) Line regulation is measured from low line to high line at rated load.The power supply is considered acomponent which will be installed into a final equipment.
(5) The dinal equipment must be re-confinnned that  it still meets.EMC directives.For guidance  on how it perform these EMC test,please refer to EMI tesing of component  power supplies. 

Our product series include: industrial power supply, power adaptor, LED driver etc., which are widely used in communication, power electronics, automation control, railway, military industry,medical care and a good deal of others.

Our Services


Our advantage:

1.Good and High efficiency Team:our company have sales team,R&D team,purchase team,PMT team,production team and quality team etc.Our teams works hard together with highefficiency,and our teams have the same target--Excellent quality,the highest service !  

2.OEM&ODM Services: Our company have professional engineers,so we cancustomize products ccording to your  detailed requirements,your samples or your ideas.





3.High efficiency automatic SMT machine and production process:it is fast,high-efficient and standard.Professional 

surface-mounting and trough-hole soldering technology.-our production process must through below steps to guarantee good quality Inspecting Raw Materials-Auto machine to SMT--Plug-in  module--Pass wave-soldering (Auto solder)--Angle  cutter cutting angles--Post-solder &Assembling--QC Inspection--FQC Testing Products--Ageing --Quality department spot-check goods--Packing--Shipping out.










4. Excellent geographical location: Our company locate in good place,the transportation is very convenient. It takes short time to reach our company.


Packaging & Shipping


Our Product Package:

 In order to protect products,the inner package is often use PP bags or Anti Static bags,and the use white box to pack each product,then put each one into the strong carton,at last finish packing.




Transportation ways of products: 

You can choose any way which you like to ship the goods,we will try our best tohelp you save shipping cost.



 Product Certificates:

 Almost all of our products get CE/CCC/ROHS/FCC etc certificates,and if you have Special requirements of certificates,we can help to apply it for you.And our company pass ISO9001and ISO14001.


Company Information


About our company

1.Company profile and contact information.

2.Our Teams and working place


well-known power supply brand with consulting, design, manufacturing and service.


Transaction History of the Supplier

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Transaction Overview


Transaction Details

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Transaction Value
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China (Mainland)
Transaction Level:
Supplier Assessments:
5 Transactions 30,000+
The supplier’s transactions conducted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $39,000
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