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Switchmode power supply


  • Mains voltage input
  • Isolation 3.75 kVAC
  • Short-circuit protection
  • Thermal overload protection
  • Standard 11-pole relay socket
  1. Overview +

  2. Technical details +

  3. Accessories +

Advanced features

  • The power supply is based on secondary switchmode technology to achieve a high efficiency.
  • The output is adjustable from front potentiometer in the range 5...24 VDC.


  • General power supply for smaller measurement systems requiring fixed stabilized 24 VDC, or supply for any other sensors, transmitters or as a general variable power supply 5 to 24 VDC.
  • Two units may be connected in series for plus / minus or higher output voltage.
  • Suitable for PELV/SELV applications.

Technical characteristics

  • A green LED indicates active output.
  • Double-isolated safety transformer.
  • Isolation test voltage between input and output is 3.75 kVAC.
  • The input circuit is protected with a thermal fuse.
  • Output short circuit protection with current limiter.


Data sheet

EAC declaration

EAC LVD declaration

Metrology Pattern Approval (MPA)

Environmental Conditions

Operating temperature -20°C to +60°C
Relative humidity < 95% RH (non-cond.)
Protection degree IP50

Mechanical specifications

Dimensions (HxWxD) 80.5 x 35.5 x 84.5 mm (D is without pins)
Weight approx. 425 g

Common specifications


Internal power dissipation 4 W

Isolation voltage

Isolation voltage, test / working 3.75 kVAC / 250 VAC
Transformer EN 60742
Effect of supply voltage change < ±30 mV (±10%)
Transient stability (10%-max. load) < 250 mV
Temperature coefficient 0.05% / °C
EMC immunity influence < ±0.5%

Input specifications

Input voltage (AC) 21.6...26.4 VAC 99...121 VAC
108...132 VAC
207...253 VAC
Frequency 50...60 Hz

Output specifications

Current output

Current limit Typ. 2.2 A (short circuit)
Output voltage 4.75...25.2 VDC
Output power Max. 7 W
Output current 1 A / 5 VDC 0.55 A / 12 VDC
0.45 A / 15 VDC
0.3 A / 24 VDC
Load effect (10%-max. load) < 1.5% / A
Output ripple < 20 mVRMS

Observed authority requirements

EMC 2014/30/EU
LVD 2014/35/EU
EAC TR-CU 020/2011
EAC LVD TR-CU 004/2011

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