Used Power Supply Modules for Sale

A power supply module is designed for ATE rack integration, VXI or PXI chassis installation, or modular system configurations — it typically lacks a front-panel display and is controlled exclusively over GPIB, LAN, or USB. A bench power supply is a standalone unit with a display, knobs, and manual controls. Both deliver regulated DC output, but modules are sized and interfaced for automated test racks, not manual bench use. If you are building a rack-based ATE system, a module is the right choice.

The Keysight E3600 family covers single-output modules from 8 V/7 A to 60 V/1.5 A in fixed-range configurations. The N5700 and N5750 series (100 W to 500 W per module) cover 20 V/5 A through 300 V/1.7 A. Kepco BOP series modules are bipolar, covering ±72 V/±15 A for amplifier supplies. For higher-power ATE supplies in the 1–5 kW range, Sorensen SGA and Xantrex XDC modules are common.

The E3600 series (E3615A, E3616A, E3617A, E3620A, E3630A) ages well mechanically. The most common bench finding is calibration drift — voltage and current output accuracy drifts from factory spec after several years without recalibration. We measure output voltage accuracy at full and half scale for every module before listing. The second issue is fan bearing noise on older units. We note both conditions in the listing.

High-precision battery simulation requires a supply with fast transient response, bidirectional current (source and sink), and a programmable load profile — the Keysight N6900 series advanced power system or the Chroma 62000P series are built for this. Standard power supply modules can provide a static bus voltage but cannot replicate the dynamic impedance profile of a battery cell. For EV pack simulation the bidirectional requirement eliminates most single-quadrant supplies.

Keysight E3600 and N5700 series modules use GPIB (IEEE-488.2) as the standard interface. Later N5700 series units add LAN (LXI) and USB. Kepco BOP series modules use GPIB or an optional analog remote programming interface. Sorensen SGA series uses GPIB or RS-232. When integrating into a modern test system without a GPIB card, confirm that LAN or USB interface is available on the specific model.

Yes. The Keysight E3630A is a triple-output module: 0–6 V/2.5 A, 0–25 V/1 A, and 0–(negative)25 V/1 A, all independently regulated. The E3620A is a dual-output 0–25 V/1 A module. Multi-output modules are cost-effective for digital logic boards that require +5 V, +12 V, and −12 V or +3.3 V, +1.8 V, and +1.2 V without installing three separate modules in the rack.