GW Instek PSW 250-4.5 DC Power Supply, Single CH, Multi-Range, Switch, 250V, 4.5A, 360W, PSW Series

PSW Series Programmable DC Power Supplies

Key Features

• Multi-Range Output (Up to 1080W)
  Flexible voltage/current combinations maximize usable power range

• Wide Voltage Range Options
  Models from 30V up to 800V

• Series & Parallel Capability

  • Up to 2 units in series (higher voltage)

  • Up to 3 units in parallel (higher current)

• C.V / C.C Priority Selection
  Prevents inrush current and protects sensitive DUTs

• Adjustable Slew Rate
  Control voltage/current rise and fall times for precise testing

• Built-in Protection Functions
  OVP, OCP, and thermal protection for safe operation

• Multiple Interfaces (Standard)
  USB (Host/Device) and LAN; optional GPIB/RS-232

• Analog Remote Control
  External control and monitoring via 26-pin connector

• Output On/Off Delay Control
  Synchronize multiple units in automated systems

• High Power Density Design
  Compact form factor with rack-mount capability

The PSW Series from GW Instek is a high-performance, single-output programmable DC power supply designed for demanding R&D, production testing, and system integration applications. Featuring multi-range operation up to 1080W, flexible voltage/current combinations, and advanced DUT protection capabilities, the PSW Series delivers precision, efficiency, and scalability in one platform.

With support for series and parallel operation, remote interfaces, and programmable control, it is ideal for testing LEDs, batteries, power modules, and high-current devices.

The PSW Series is engineered to provide maximum flexibility and protection in modern power testing environments. Its multi-range architecture allows users to operate across a wide combination of voltage and current without being limited to fixed ranges, significantly reducing the need for multiple power supplies.

Advanced protection features such as C.V/C.C priority control and adjustable slew rate help prevent damage to sensitive devices during testing. With built-in USB and LAN interfaces, the PSW Series integrates easily into automated test environments and production systems.

Calibration & Support
Optional calibration services are available through TestEquity to help maintain measurement accuracy and ensure compliance with quality standards over time.

In The Box

• PSW Series Power Supply Unit

• Power Cord (region dependent)

• GTL-240 USB cable "L" type

• GTL-123 Test leads for PSW 30 V / 40 V / 80 V / 160 V models

• Basic Accessory Kit, including terminals, screws, and air filter:

  • PSW-004 for PSW 30 V / 40 V / 80 V / 160 V models

  • PSW-008 for PSW 250 V / 800 V models

• Output Terminal Cover:

  • PSW-009 for PSW 30 V / 40 V / 80 V / 160 V models

  • PSW-011 for PSW 250 V / 800 V models

  • PSW-012 High voltage for PSW 250 V / 800 V models

• User manual

• Programming manual (CD-ROM)

Frequently Asked Questions (FAQ)

1) What makes the PSW Series different from a standard DC power supply?
The PSW Series from GW Instek uses multi-range operation, allowing one unit to cover a wider range of voltage and current combinations—reducing the need for multiple power supplies.

2) Can I increase voltage or current output?
Yes. You can connect up to 2 units in series to increase voltage or up to 3 units in parallel to increase current, depending on your application.

3) How does the PSW Series protect my device under test (DUT)?
It includes C.V/C.C priority mode, adjustable slew rate, and built-in protections (OVP, OCP, thermal) to help prevent inrush current and damage during testing.

4) What interfaces are available for remote control?
Standard interfaces include USB and LAN. Optional adapters are available for GPIB and RS-232 for additional system integration.