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75W Open-frame Single-phase AC/DC Converter for Power Grid--- LO75-26Bxx Series

75W Open-frame Single-phase AC/DC Converter for Power Grid--- LO75-26Bxx Series.jpg

MORNSUN launched an open-frame single-phase AC/DC Converter LO75-26Bxx Series to help to solve the problem of 220VAC single-phase grounding failure in the power grid. This series can be used in a three-phase four-wire high-power system with the feature of ultra-wide single-phase input voltage range of 176-576VAC.


This LO75-26Bxx series ac to dc converter features high efficiency, high reliability, meets safety class I and EMI meets CLASS A standards. EMC and safety specifications meet IEC/EN61000-4, CISPR32/EN55032, and UL/EN/IEC62368 standards. It can also be used in industrial control applications with its compact and structured layout.


Advantages of open-frame single-phase AC/DC Converter


1. Ultra wide input voltage range: 176-576VAC

2. Operating temperature range: -40℃ to +85℃

3. High reliability with multiple protection functions

a. High isolation voltage up to 4000VAC

b. Impulse withstand voltage 1.2/50us 5KV

c. Output short circuit, over-current, over-voltage protection

4. Outstanding EMC performance

a. EMS Immunity, EFT/Surge: ±4KV perf. Criteria A

b. EMI meets CLASS A standards


Applications of LO75-26Bxx Series AC/DC Converter 

As a professional industrial power supply manufacturer, Mornsun LO75-26Bxx Series AC/DC Converter can be widely used in the three-phase four-wire high-voltage systems and industrial control applications, as well as the applications requiring high isolation voltage and strict electromagnetic compatibility.

75W Open-frame Single-phase AC/DC Converter for Power Grid--- LO75-26Bxx Series.jpg


Features of Mornsun open-frame single-phase AC/DC Converter


  • Specific power supply designing for power grid

  • Ultra-wide input voltage range: 176-576VAC

  • Operating temperature range: -40℃ to +85℃

  • High isolation voltage up to 4000VAC

  • High efficiency, high reliability

  • Regulated output, low ripple & noise

  • Immunity, EFT/Surge: ±4KV perf. Criteria A

  • Impulse withstand voltage 1.2/50us 5KV

  • Output short circuit, over-current, over-voltage protection

  • Safety according to UL/EN/IEC62368



* For detailed information please refer to the related datasheet, product news is for reference only.
Please refer to the technical manual for specific product parameters:

Series Power(W) Vin(VAC) Vin(VDC) Vout(VDC) Iout No. of Outputs Isolation Package Dimension(mm) Footprint & 3D Markings Datasheet Sample Buy
LO75-26B12 75 176-576 - 12 6.250A 1 4000VAC Open frame 127.00*76.19*38.00
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LO75-26B24 75 176-576 - 24 3.125A 1 4000VAC Open frame 127.00*76.19*38.00
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LO75-26B48 75 176-576 - 48 1.562A 1 4000VAC Open frame 127.00*76.19*38.00
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