PR Electronics 2223 Dual Switchmode Power Supply


  • 24 / 115 / 230 VAC supply voltage
  • 3.75 kVAC isolation
  • 2 adjustable 5…24 VDC outputs
  • Output: ±5…24 VDC, 10…48 VDC
  • Short-circuit protection
  • Thermal protection against overload

PR Electronics 2223 Dual Switchmode Power Supply is designed to provide high-efficiency power with adjustable dual outputs. Utilizing switch mode technology, it offers flexibility and robust protection, making it suitable for small measuring systems requiring two stabilized voltages.

Advanced Features

  • High Efficiency: Based on switch mode technology, ensuring high efficiency.
  • Adjustable Outputs: The outputs are adjustable via two front potentiometers within the ranges of 5…24 VDC.


  • Dual Voltage Supply: Provides supply for small measuring systems demanding two stabilized voltages, either as a combination of positive and negative voltages or as two separate supplies as required.
  • Series or Independent Supplies: The two supplies are galvanically separated with 500 VAC test voltage and can be connected in series to achieve 10…48 VDC or ±5…24 VDC, or used as two independent supplies with or without a common ground.
  • Safety Installations: Suitable for separating circuits in safety installations according to the PELV/SELV norm.
  • Galvanic Isolation: Achieves galvanic isolation between the primary and secondary voltage through a double-isolated safety transformer.

Technical Characteristics

  • Power Indicators: Two green LEDs (Power ON 1 and Power ON 2) indicate active outputs.
  • Series Connection: By connecting the two outputs in series, 10…48 VDC or ±5…24 VDC can be achieved.
  • Thermal Fuse Protection: Input circuit protected with a bimetal thermal fuse.
  • Short Circuit Protection: DC output short circuit protection with a current limiter.
  • Mounting Options: Designed for mounting on a standard 11-pole socket, adaptable for DIN rail or plate use with PR’s 7023 adaptor and 7024 mounting keying.

PR Electronics 2223 Dual Switchmode Power Supply is an efficient and versatile solution for providing dual stabilized voltages, suitable for various industrial applications, including safety installations requiring galvanic isolation. Its adjustable outputs and robust protection features ensure reliable performance in demanding environments.


Operating temperature -20°C to +60°C
Relative humidity < 95% RH (non-cond.)
Protection degree IP30
Dimensions (HxWxD) 80.5 x 35.5 x 84.5 mm (D is without pins)
Weight approx. 400 g
Internal power dissipation 4 W
Isolation voltage
Isolation voltage, test / working 3.75 kVAC / 250 VAC
Isolation output 1 / 2, test / working 500 VAC / 50 VAC (75 VDC)
Effect of supply voltage change < ±30 mV (±10%)
Transformer EN 60742
Transient stability (10%-max. load) < 250 mV
Temperature coefficient 0.05% / °C
EMC immunity influence < ±0.5%
Supply voltage 21.6…26.4 VAC 103.5…126.5 VAC
207…253 VAC
Frequency 50…60 Hz
Current output
Current limit Typ. 100 mA (short circuit)
Output voltage 4.75…25.2 VDC
Output power Max. 7.5 W (total)
Output current, per channel 0.5 A / 5 VDC (2.5 W) 0.37 A / 12 VDC (4.5 W)
0.30 A / 15 VDC (4.5 W)
0.18 A / 24 VDC (4.3 W)
Load effect (10%-max. load) < 1.5% / A
Output ripple < 20 mVRMS
EMC 2014/30/EU
LVD 2014/35/EU
EAC TR-CU 020/2011
EAC LVD TR-CU 004/2011


PR Electronic 2223 Dual switchmode power supply-DpstarGroup