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400V Power Supply

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20 Best 400V Power Supply of 2023 – Romance University

After hours researching and comparing all models on the market, Romance University finds out the Best 400V Power Supply of 2023. Check our ranking below.

2,085 Reviews Scanned

Rank No. #1
NICE-POWER DC Power Supply Variable, 0-400V 0-1A High Voltage Bench Power Supply with Memory Storage & Encoder Knob, Adjustable Regulated Lab Power Supply with Output Switch Lock Button Color Display
  • Storage Memory, Output Switch: DC power supply variable with four sets of data storage function buttons M1-M4, can save four sets of commonly used voltage and current value combinations, recalled at any time, no need to repeat the input. The output switch controls the output of the DC power supply to prevent damage to the load.
  • Encoder Adjustment Knob, Lock Button: The encoder knob helps you to adjust the voltage and current quickly and precisely. Press the knob to determine the number of digits to be adjusted, then rotate the button to adjust the desired voltage/current value. The DC power supply LOCK button prevents re-adjustment by accidentally touching other buttons.
  • High Precision, 4-Digit Color Display: The DC Power Supply 400V 1A features a high resolution of 0.01V and 0.001A, and our DC power supply voltage is adjustable up to 400V. The lab power supply's 4-digit, backlit, colour LCD display provides a more accurate, clearly visible reading of voltage and current values.
  • Multi-Protection, Intelligent Temperature-Controlled Fan: Safety is our priority. The DC power supply variable has multiple protections for over-voltage, over-current, over-heat and short-circuit protection. When the internal temperature of the DC power supply reaches 122℉/50℃, the fan of the DC power supply will turn on automatically to effectively cool down and prolong the life.
  • Various Applications: This dc power supply variable is suitable for battery charging ( LiFePO4, lead acid batteries, etc.), electronics repair, communication equipment maintenance, electrolysis, electroplating, brush plating, lamp test, aging test, burn-in test, production line test, DIY, labs, schools, laboratories scientific research and teaching etc. The NICE-POWER DC power supply is a nice choice for beginners or professional electricians and DIY electronics hobbyist.
Rank No. #2
Adjustable Switching Power Supply DC Output 2000W 0-300V 400V 500V 600V Current and Adjustable Voltage 110/220/380VAC
  • 1. DC power supply simple phase, singular output
  • 2. Current and voltage can be adjusted from 0 to nominal value
  • 3. 2LED digital display, built-in EMI filter. Have an anti-interference circuit)
  • 4. Intelligent temperature control fan to help power supply fast cooling
  • 5. Uses: charging batteries, PCB board manufacturing industry. DC motors and fans, electrophating, electrolysation, electronic aging laboratory, electronic equipment, automatic test equipment, all other occasions must use a DC power supply
Rank No. #3
Acxico 1pcs High Voltage DC-DC Boost Converter 5V-12V Step up to 300V-1200V Power Module
  • When the input voltage is 5V, the output voltage can be adjusted in 300-900V.when the input voltage is 6-12V, the output voltage can be adjusted in 400-1200V.
  • The capacitor can he charged, but charging speed is somewhat slow, please note.
  • As the module power output module, it is not possible for the sensor.This module is used on security products. stability is fairly good.
  • Package includes:1pcs High Voltage DC-DC Boost Converter 5V-12V Step up to 300V-1200V Power Module
  • We are very grateful to all customers for their suggestions to improve sales, if you are not satisfied, please contact us to find the best solution
Rank No. #4
LM YN High-Voltage Power Supply Module DC-DC ±45-390V Adjustable Step-Up ZVS Capacitor Charge Ultra High Voltage Adjustable Output
  • Warning: High voltage danger! Please use with caution in non-electrician's profession! If you are a professional electrician who also pay attention to safety, good security measures.
  • Input voltage: DC10-32V. Input current: 5A (MAX).
  • Static operating current: 15mA (12V to 50V, the higher the output voltage will increase the quiescent current).
  • Output voltage: ± 45-390V 780V continuously adjustable. Output power: 40W (peak 70W).
  • Operating temperature: -40 ~ +75 ℃ (If the ambient temperature is high, please strengthen the heat). Operating frequency: 75KHz.
Rank No. #5
RS232/USB Programmable Switching DC Power Supply Variable 400V 1A Adjustable 30V 10A 60V 120V Automatic Control Connect PC Store Data for Laboratories, Electronic Work, DIY, etc.(RS232-400V1A)
  • Programmable DC Power Supply You can connect the dc power supply variable to your computer via the back USB or RS232 port to precise control or upgrade your dc power supply.
  • Memory Storage, Output Switch The dc power supply with four sets of data storage function button M1-M4. you can save four sets of commonly used voltage and current value combinations and recall it for use at any time without repeated input. The output switch controls the output of the DC power supply and prevents damage to the load.
  • Upgraded Encoder Knob, Lock Button The dc power supply encoder adjustment knob can be used to precisely regulate the voltage and current. Press the knob to determine the number of digits to be regulated and rotate the pushbutton to regulate the desired voltage/current value. The dc power supply lock button prevents you from accidentally touching other buttons to avoid re-adjustment.
  • Two USB Ports, Power Button Front-Mounted This dc power supply is equipped with two USB ports. Rear USB interface (upgrade program, upper computer control interface); DC power supply variable front 5V 2A USB interface can be used to charge mobile phones. More importantly the power button is on the front of DC power supply, making it easier to use and needn't turn to the back to turn on/off DC power supply.
  • 4-digit Color LCD Display The dc power supply has a high resolution of 0.01V and 0.01A, and our dc power supply the voltage can be adjusted up to 32V. The lab power supply 4-digit back-lit color LCD display provides more accurate and clearly visible readings for the voltage and current value.

Last update on 2025-07-02 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

How Do You Buy The Best 400V Power Supply?

Do you get stressed out thinking about shopping for a great 400V Power Supply? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching 400V Power Supply, which is why we have assembled a comprehensive list of the greatest 400V Power Supply available in the current market. We’ve also come up with a list of questions that you probably have yourself.

Romance University has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 400V Power Supply that you consider buying. Your questions might include the following:

  • Is it worth buying an 400V Power Supply?
  • What benefits are there with buying an 400V Power Supply?
  • What factors deserve consideration when shopping for an effective 400V Power Supply?
  • Why is it crucial to invest in any 400V Power Supply, much less the best one?
  • Which 400V Power Supply are good in the current market?
  • Where can you find information like this about 400V Power Supply?

We’re convinced that you likely have far more questions than just these regarding 400V Power Supply, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 400V Power Supply, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 400V Power Supply. Make sure that you are only using trustworthy and credible websites and sources.

Romance University provides an 400V Power Supply buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 400V Power Supply currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of 400V Power Supply has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 400V Power Supply?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 400V Power Supply.
  5. Customer Ratings: Number ratings grade 400V Power Supply objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 400V Power Supply.
  7. Product Quality: You don’t always get what you pay for with an 400V Power Supply, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an 400V Power Supply is should be an indication of how long it will work out for you.

Romance University always remembers that maintaining 400V Power Supply information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding 400V Power Supply is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

FAQ:

Q: Why is the power supply voltage 400V when?

A: Take a three phase power supply. Each phase will be 230V when taking the neutral as a reference. Because each phase is phased out by 120°, the voltage between any two phase is 400V. Here is the quick demonstration for $U_ {21}=V_2-V_1$; same goes for the others.

Q: What is the phase voltage of a power supply?

A: Phase voltage is 230V. Line Voltage is 400V. The voltage applied to the load does not magically switch from 230V to 400V when you remove the neutral. The wiring configuration between the supply and the load, called “coupling”, determines whether 230V or 400V is applied across the load (s). Take a three phase power supply.

Q: What kind of programmable power supply is available?

A: Figure 1: The TDK-Lambda Z+ Programmable Power Supply is available as a bench top or rack mount with output to 650V, and features built-in USB, RS-232 & RS-485 interfaces. Many of the models are capable of connecting to another model of the same kind in series to increase the voltage output or in parallel to increase the current output.

Q: Can a power supply be controlled from the front?

A: These power supplies (Table 1) all provide high, reliable power with low noise and excellent regulation and can be controlled from the front panel or remotely through a number of interface options.

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