Benchtop power supply

The ES300 power supply has excellent lifetime and stability. Multiple power supplies can be connected in series, parallel or both in series and parallel to create numerous output configurations. Due to its small size, the unit is extremely suitable as a benchtop power supply.

Standard, the ES300 can be controlled either via the front or an analog input at the rear of the power supply. Optionally, ethernet and RS232 remote programming features can be factory installed. Furthermore, external interface modules are available to add this functionality to existing units.


High isolation voltage

The output terminals are floating and isolated up to 600V DC. Combined with the optional 19" mounting, the power supply can be integrated into larger systems easily to power main or auxiliary devices. 

Unit Voltage Current VI-curve
0 - 30 V
0 - 10 A


  • Very low output ripple and spikes
  • EMC surpasses CE requirements: low emission & high immunity
  • High programming speed
  • Excellent dynamic response to load changes
  • Protected against all overload and short circuit conditions
  • Designed for long life at full power


  • Master/Slave parallel and series operation with voltage and current sharing
  • Voltage and current control with 10-turn potentiometers
  • For laboratory use or optional 19” rack mounting


  • Input voltage (single phase): 92-265 VAC (48-62 Hz)
  • Active Power Factor Correction (PFC): 0.99 / 0.96 (at 100% load)
  • Efficiency: up to 86% (at full load)
  • Output ripple and spikes: 5 mVRMS / 15 VPP
  • Regulation: 10 mV (0-100% load step)
  • Recovery time: 50 µs (50-100% load step)
  • Programming speed: 0.8 ms (10-90%)
  • Analog programming accuracy: 0.2%
  • Output voltage and current stability: 30.10-5 / 10.10-4
  • MTBF: 500 000 hrs
  • Operating ambient temperature: -20 to +50 ºC


  • Emission: EN 61326-1 (class B equipment, for use in domestic establishment)
  • Immunity: EN 61326-1 (equipment for use in industrial and domestic establishment)
  • Safety: EN 60950-1 / EN 61010-1
  • Insulation input / output: 3750 VRMS (1 min.)
  • Protection class: IP20

Dimensions and weight

  • Width: half 19 inch
  • Height: 66 mm (incl. feet)
  • Depth: 333 mm
  • Weight: 3.1 kg


Optional factory installed features

Rear Power Output and Remote Sensing
Rear Power Output and Remote Sensing

Output terminals at the rear panel instead of binding posts at the front panel, includes remote sensing. For more information, download the data sheet ES300-series (see pages 1-3 & 1-4).

Increased Output Power
Increased Output Power

For conservatively rated units, extra output power (with the same reliability) is allowed. At some derating, either the maximum output voltage or current of these units can be increased by about 10%. Contact us or our local distributor for information which units extra output power is allowed.

Software Control and Interfaces
Software Control and Interfaces

Factory installed programming interfaces*:

* there is room for only one of the interfaces in a unit


Add-on interfaces to be added at any time

Order codes

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To order codes

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Data sheets Type/Format Size
Data sheet ES300 pdf 545.02 KB
Data sheet Isolation amplifier pdf 515.7 KB
Data sheet RS232 interface pdf 211.31 KB
Manuals Type/Format Size
Product manual ES300 pdf 938.35 KB
Product manual RS232 interface pdf 969.88 KB
Product manual Ethernet interface pdf 1.38 MB
Product manual Isolation amplifier pdf 379.7 KB
Application notes Type/Format Size
Application note Safe operation pdf 364.71 KB
Application note Battery charging pdf 54.34 KB
Software Type/Format Size
DE Applications bundle description pdf 104.29 KB
DE Applications zip 417.72 MB
Example Code and Software zip 168.81 KB
3D drawings Type/Format Size
3D drawings ES300 series zip 15.3 MB
Compliance Type/Format Size
ROHS pdf 192.81 KB
REACH pdf 195.25 KB