Maximum values of the series: 300Vrms L-N / 42A / 3KVA / ØPL = 1,18€/W

Phase:1Display Accuracy I:±0.5% FS + 5 dig
Voltage:0 … 300Vrms L-NDisplay Accuracy P:±0.5% FS + 5 dig
Current:0 … 42A L-NDisplay Accuracy F:±0.01% FS + 5 dig
Frequency:45Hz … 250HzSetting Accuracy U±1% FS
Power:0 … 3KVASetting Accuracy F:±0.1% FS
Cabinet:Non-StandardExt. Control Analoque:No
Regulation:UExt. Feedback Analoque:No
Load Regulation U:≤1%RS232:Yes (only 51XXX Models)
Line Regulation U:≤1%RS485:No
Frequency Stability:≤0.01%RS422:no
Voltage Stability:±1%Open Protocol:Yes
Harmonic Distortion:≤2%Modbus-RTU:No
Crest Factor:≤2%SCPI:No
Recovery Time (50% Chg.):≤15msInterlock:Yes*
Display Accuracy U:±0.5% FS + 5 digExt. Outp. On/Off Contrl.:Yes*
Voltage:0 … 300Vrms L-N
Current:0 … 42A L-N
Frequency:45Hz … 250Hz
Power:0 … 3KVA
Load Regulation U:≤1%
Line Regulation U:≤1%
Frequency Stability:≤0.01%
Voltage Stability:±1%
Harmonic Distortion:≤2%
Crest Factor:≤2%
Recovery Time (50% Chg.):≤15ms
Display Accuracy U:±0.5% FS + 5 dig
Display Accuracy I:±0.5% FS + 5 dig
Display Accuracy P:±0.5% FS + 5 dig
Display Accuracy F:±0.01% FS + 5 dig
Setting Accuracy U±1% FS
Setting Accuracy F:±0.1% FS
Ext. Control Analoque:No
Ext. Feedback Analoque:No
RS232:Yes (only 51XXX Models)
Open Protocol:Yes
Ext. Outp. On/Off Contrl.:Yes*

* Optional

Alternating current laboratory power supplies of the DF-S series provide excellent stability, precision, performance and functionality in a compact laboratory power supply. The ARM microprocessor-based advanced digital controller provides fast response times and constant output monitoring, resulting in high stability and accuracy. Partly equipped with RS232 connection (51XXX models), the power supply can be controlled via an open protocol, the front panel also allows easy setting and monitoring of the output values ​​even in autonomous operation. Designed for laboratory and industrial use, alternating current laboratory power supplies of the DF-S series can also be operated 24/7 completely maintenance free and feature a strong overpower capacity of 300% for 2s plus 1.5x the maximum rated current for 100ms.


The following is a brief description of the possible additional options for alternating current laboratory power supplies of the DF-S series. A detailed description can be found in the datasheet of the series, should you have any questions contact our support during our opening hours via the live chat or by e-mail and we will gladly assist you.

[A] Interlock
For security reasons, the power supply output can be enabled / stays enabled only as long as the interlock loop is closed.

Laboratory Power Supply Configurator

Select a voltage, current, power combination from the model list by clicking on the corresponding line. Then configure the model with additional options, the configuration is displayed at the bottom of the screen in the configurator. Press “CONFIRM” to end the configuration and to proceed with the request. Fill out the required fields and send your request to our support team by pressing the “REQUEST” button, you will receive an offer by e-mail within a few minutes.

ModelPhaseVoltageCurrent (LV)Current (FS)PowerPricePrice / PerformanceLead time / Calendar days
DF-S5000351300Vrms L-N3 A1.5 A350 VA790,00 €2,26 €25 – 30

DF-S500071300Vrms L-N6 A3 A700 VA880,00 €1,26 €25 – 30
DF-S500121300Vrms L-N10 A5 A1200 VA1.000,00 €0,83 €25 – 30
DF-S510051300Vrms L-N4.2 A2.1 A500 VA870,00 €1,74 €25 – 30
DF-S51011300Vrms L-N8.4 A4.2 A1000 VA980,00 €0,98 €25 – 30
DF-S51021300Vrms L-N16.8 A8.4 A2000 VA1.270,00 €0,64 €25 – 30
DF-S51031300Vrms L-N25 A12.5 A3000 VA1.650,00 €0,55 €25 – 30

Model[Accessories] and [Options]Price plus Vat and Shipping
GerätemodellPrice plus Vat and Shipping