
250-4.5 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $1568.44 | Condition is New, GW INSTEK PSW 250-4.5 Multi-Range D.C. Power Supply 360W, shipping cost = $26.67 | ![]() |
![]() | $1759.00 | Top Pick! Condition is New, GW Instek PSW 250-4.5 Programmable DC Auto Range Power Supply 360W 250VDC, FREE SHIPPING | 100.0% |
![]() | $1759.00 | Top Pick! Condition is New, GW Instek PSW 250-4.5 Programmable DC AutoRange Power Supply 360W 250VDC, FREE SHIPPING | 100.0% |
![]() | $1815.00 | Condition is New, Instek PSW 250-4.5 Programmable DC Power Supply, 360W, FREE SHIPPING | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $960.00 | Condition is Used, GW Instek PSW 250-4.5 Programmable DC AutoRange Power Supply 360W, shipping cost = $100.00 | 98.2% |

The Instek 250-4.5 PSW is a versatile and powerful programmable DC power supply designed to meet the needs of various electronic applications. With a maximum output power of 360 watts, this power supply can deliver a continuous current of up to 14.3 amps and a peak current of up to 18 amps.
The Instek 250-4.5 PSW features a user-friendly LCD display that shows real-time voltage, current, power, and energy readings. It also includes a built-in digital multimeter function, which allows users to measure voltage, current, and resistance without the need for additional test equipment.
This power supply is programmable, allowing users to set and store up to 10 voltage and current levels for each output channel. It also includes a remote control function, which can be activated using an optional IR remote control (sold separately).
The Instek 250-4.5 PSW is designed with safety in mind, featuring overvoltage, overcurrent, and short-circuit protection. It also includes a fan for cooling, which automatically turns on when the power supply reaches a certain temperature to ensure stable and reliable operation.
The power supply is housed in a sturdy, metal enclosure with a compact size of 14.2 x 10.2 x 3.1 inches. It includes a detachable AC cord and a set of output cables, making it easy to use right out of the box. The Instek 250-4.5 PSW is an ideal choice for electronics enthusiasts, students, and professionals who require a reliable and programmable power supply for their projects and experiments.
The Instek 250-4.5P SWP Programmable Power Supply 360W is a versatile and feature-rich power supply unit that can be used in various applications, particularly in laboratories, educational settings, and electronic projects. Here are some pros and cons to help you make an informed decision about purchasing this power supply:
Pros:1. Programmable: This power supply allows users to set and save voltage and current levels, making it ideal for experiments and applications where precise control is necessary.
2. Wide Input Voltage Range: The Instek 250-4.5P can accept a wide input voltage range of 100-240V AC, making it suitable for use in various regions and power environments.
3. Overvoltage, Overcurrent, and Short-Circuit Protection: The power supply includes built-in protection features to prevent damage to the device or the connected load in case of overvoltage, overcurrent, or short-circuits.
4. Remote Control: The power supply comes with an optional remote control, allowing users to adjust voltage and current levels without having to physically interact with the device.
5. Safety Features: The Instek 250-4.5P includes safety features such as a lockout function, a grounding terminal, and a fuse to protect against potential hazards.
Cons:1. Limited Output Power: With a maximum output power of 360W, this power supply may not be suitable for heavy-duty applications that require a higher power supply.
2. No Parallel or Series Operation: The Instek 250-4.5P cannot be used in parallel or series configurations, limiting the ability to increase the output power or voltage range.
3. Lack of Digital Display: Although the power supply includes a voltage and current meter, it is an analog display, which may not be as precise or convenient as a digital one.
In conclusion, the Instek 250-4.5P SWP Programmable Power Supply 360W is an excellent choice for users who require precise voltage and current control, a wide input voltage range, and safety features. However, it may not be suitable for applications that require a higher power output or parallel/series operation. Considering its features, versatility, and affordability, I would recommend the Instek 250-4.5P as a reliable and cost-effective power supply solution for various electronic projects and laboratory applications.
Details:
Please consider troubleshooting prior to making a return request. The conventional power supply normally operates under CV mode when the output is turned on. Adjustable slew rate. Taking the i-v curve verification of led as an example, it becomes a very challenging task to perform this measurement using conventional power supply.features:: voltage rating: 250v, output power 360w.
Series operation: up to 2 units 30v, 80v, 160v model's only. This series of products include fifteen model's with the combination 30v, 80v, 160v, 250v, and 800v rated voltage s 360w, 720w 1080w maximum output powers. With the flexibility of multi-range power utilization and series/parallel connection, psw series significantly reduces users investment for various supply products to accommodate projects with different requirements. Optional interface: glib-USB adaptor.
Constant power output for multiple range v I operation. As the psw-series can be connected in series for maximum 2 units or parallel 3 units, capability of connecting multiple psw higher voltage current output provides a broad coverage applications. The multi-range feature allows the flexible and efficient configuration of voltage current within rated power range. Lab view driver.
High efficiency and power density. This could bring a high inrush current to the capacities load or current-intensive at power output-on stage. The CV/cc priority selection of the psw-series is a very useful feature for duet protection. Standard interface: LAN,USB,analog control interface.
Photos are greatly appreciated.
specifications testmultimeters:
- brand: Instek
- mpn: 250-4.5
- part type: Supply
- country/region of manufacture: Taiwan
shipping testmultimeters:
- class: economy
- service: economy
- transit: 4-7 days
- type: fixed
general testmultimeters:
- category: Business & Industrial > Test, Measurement Inspection > Detectors > Multimeters
seller testmultimeters:
- rating: 97.9%
- city: worcester, pennsylvania
- # reviews: 11225
returns testmultimeters:
- time: 30 days
- method: money back
- paid by: seller
- policy: returns accepted
offer testmultimeters:
- in stock #: 5
- sold #: 19
- started: april 17, 2025
- prices: $960.00–$1815.00
- item condition:
- New
- Used
- options: ship-to-home
- availability: in stock
payments testmultimeters:
- other
- credit card: discover
- wallet: apple-pay




