
400-3.8 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $2459.00 | Top Pick! Condition is New, GW Instek PSU 400-3.8 Programmable Switching DC Power Supply 400V DC 3.8A 1520W , FREE SHIPPING | 100.0% |
![]() | $2459.00 | Top Pick! Condition is New, GW Instek PSU 400-3.8 Programmable Switching DC Power Supply 400VDC 3.8A 1520W, FREE SHIPPING | 100.0% |
![]() | $2541.00 | Condition is New, Instek PSU 400-3.8 400VDC - 3.8A, 1520W Programmable DC Power Supply, FREE SHIPPING | 99.8% |
![]() | $2541.00 | Condition is New, Instek PSU 400-3.8 1 Ch Prog DC Power Supply, 1520W, 400V/3.8A, shipping cost = $50.95 | 99.9% |

The INSTEK 400-3.8 is a versatile and powerful Programmable Power Supply unit designed for various applications in laboratory settings, educational institutions, or industrial environments. This DC power supply delivers a constant voltage of 400V with a maximum current capacity of 3.8A, making it capable of supplying a maximum power output of 1520W.
This programmable power supply offers a user-friendly interface, featuring a high-resolution LCD display that shows real-time voltage, current, power, and energy readings. It also includes function keys for easy navigation and configuration of various operational parameters.
The INSTEK 400-3.8 is a programmable power supply, allowing users to set and save voltage, current, and power levels for various applications. It also supports various waveforms, including constant voltage (CV), constant current (CC), and constant resistance (CR) modes. This flexibility makes it an ideal choice for a wide range of applications, from charging batteries and testing electronic components to calibrating instruments and performing research.
Safety is a top priority with the INSTEK 400-3.8. It features overvoltage, overcurrent, short-circuit, and overpower protection to prevent potential damage to the unit or connected devices. Additionally, it includes a fan for efficient cooling to ensure reliable and stable operation even during high-power applications.
The INSTEK 400-3.8 is designed with a robust construction, featuring a sturdy metal housing and a detachable IEC power cord. It also includes a variety of output connectors, including banana plugs and binding posts, to accommodate different user requirements. Its compact size and portability make it a convenient choice for both benchtop and mobile applications.
In summary, the INSTEK 400-3.8 is a programmable power supply unit that delivers reliable and stable DC power with a maximum output of 1520W. Its user-friendly interface, versatile waveform support, and safety features make it an excellent choice for various applications in laboratory, educational, or industrial settings.
The Instek 400-3.8 is a programmable power supply designed for DC voltage applications. Here are some pros and cons that might help you decide if this power supply is a good fit for your needs.
Pros:1. Programmable: The Instek 400-3.8 is a programmable power supply, which means you can set the output voltage and current to specific values. This can be useful for various applications, such as testing electronic circuits or charging batteries.
2. Wide Voltage Range: The power supply can output voltage from 0 to 400V DC, which makes it suitable for a wide range of applications.
3. High Power: With a maximum output power of 1520W, the Instek 400-3.8 is a high-power power supply. This can be beneficial for applications that require a lot of power.
4. Safety Features: The power supply has several safety features, including overvoltage protection, overcurrent protection, and short-circuit protection. These features help prevent damage to the power supply or the connected equipment.
5. Remote Control: The Instek 400-3.8 comes with a remote control, which allows you to adjust the output voltage and current from a distance.
Cons:1. Size and Weight: The Instek 400-3.8 is a large and heavy power supply, weighing in at around 22 lbs (10 kg). This can make it difficult to transport or move around, especially if you need to take it to different locations for testing.
2. Price: The Instek 400-3.8 is a high-performance power supply, and its price reflects its capabilities. If you only need a power supply for simple applications, there are less expensive options available.
3. Complexity: The Instek 400-3.8 is a complex piece of equipment, and it may take some time to learn how to use all of its features effectively.
4. Limited Current Capability: While the Instek 400-3.8 can output a high voltage, its maximum current capacity is relatively low at 3.8A. This may limit its usefulness for certain applications that require a lot of current.
Ending Conclusion:The Instek 400-3.8 is a high-performance programmable power supply with a wide voltage range, safety features, and remote control. It is suitable for applications that require a lot of power and the ability to set specific output voltages and currents. However, it is a large and heavy power supply, and its price may be a deterrent for some users. Additionally, its maximum current capacity is relatively low, which may limit its usefulness for certain applications.
Recommendation:If you need a high-performance power supply with a wide voltage range and the ability to set specific output voltages and currents, the Instek 400-3.8 is a good option to consider. However, if you only need a power supply for simple applications or if the size, weight, and price are concerns, there are less expensive and more portable options available. Consider your specific requirements and budget before making a decision.
Details:
High-speed priority sets slew rate at the maximum speed to reach cc or CV mode. Option: glib, isolated analog interface voltage control/current control. Such tests include micro-resistor, relay, shunt resistors, etc. The psu-series provides 10 model's including 6v/200a, 12.5v/120a, 20v/76a, 40v/38a, 60v/25a, 100v/15a, 150v/10a, 300v/5a, 400v/3.8a, and 600v/2.6a.
Via 4 units of the same model's in parallel connection, maximum output current at 6v reaches 800a. Protection: op, cop, hop, UL, ac fail, fan fail. Three sets of preset function. There are two kinds of slew rate settings: high-speed priority.
Please consider troubleshooting prior to making a return request. It meets the demands of low voltage and high current, power density. Internal resistance function. Series/parallel connection: max.
Adjustable voltage /current rise and fall time. Photos are greatly appreciated. High efficiency and power density. C.v/c.c priority mode.
Panel lock function. Psu is suitable for electric components manufacturers to verify withstanding current tests of 100a and above. The psu-series allows settings for cc priority or CV. Under cc or CV mode, users can adjust the slew rate for output voltage current based upon test requirements.
Bleeder control function. Instek psu 400-3.8 400vdc - 3.8a, 1520w programmable dc power supply voltage output: 400v parallel master/slave operation with active current sharing remote sensing to compensate for voltage drop in load leads GE psu-series power supply 1u height is highly praised by various markets and it widely utilized system integrator.
specifications testmultimeters:
- brand: Instek
- mpn: 400-3.8
- part type: Supply
- country/region of manufacture: Taiwan
- upc: 645759322333
shipping testmultimeters:
- transit: 5-8 days
- service: economy
- type: fixed
- class: economy
payments testmultimeters:
- credit card: visa
- wallet: paypal
- other
general testmultimeters:
- category: Business & Industrial > Test, Measurement Inspection > Detectors > Multimeters
offer testmultimeters:
- options: ship-to-home
- prices: $2459.00–$2541.00
- item condition: New
- sold #: 18
- started: may 22, 2025
- in stock #: 4
- availability: in stock
seller testmultimeters:
- # reviews: 11279
- city: worcester, pennsylvania
- rating: 97.8%
returns testmultimeters:
- time: 30 days
- method: money back
- paid by: seller
- policy: returns accepted


