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Switchmode voltage regulator


  • AC/DC input voltage
  • Adjustable output 5...24 VDC, max. 40 W
  • Adjustable from external potentiometer
  • Short-circuit protection
  • Thermal overload protection
  • Standard 11-pole relay socket
  1. Overview +

  2. Technical details +

  3. Accessories +

Advanced features

  • The regulator is based on primary switchmode technology to achieve a high efficiency.
  • The outputs are adjustable from a front potentiometer in the range 5...24 VDC or from an external potentiometer.


  • General voltage regulator for external transformer used in connection with measurement systems requiring fixed stabilized 24 VDC.
  • Supply for any other sensors, transmitters or a general variable voltage regulator in the range 5...24 VDC.
  • Used as a power efficient pre-regulator for 5 VDC linear regulator (e.g. from 32 V to 8 V).
  • Used as adjustable power supply controlled from external potentiometer.

Technical characteristics

  • A green LED indicates active output.
  • AC or DC input voltages.
  • A rectifier bridge allows free choice of polarity for the DC input.
  • Mounting for a standard 11-pole socket which can be adapted for DIN rail or plate use with PR’s 7023 adaptor and 7024 mounting keying.

Environmental Conditions

  • Operating temperature

    -20°C to +60°C

  • Relative humidity

    < 95% RH (non-cond.)

  • Protection degree


Mechanical specifications

  • Dimensions (HxWxD)

    80.5 x 35.5 x 84.5 mm (D is without pins)

  • Weight approx.

    170 g

Common specifications

  • Supply

  • Internal power dissipation

    10 W

  • Transient stability (10%-max. load)

    < 250 mV

  • Temperature coefficient

    0.05% / °C

  • EMC immunity influence

    < ±0.5%

Input specifications

  • Input voltage (AC)

    Max. 28 VAC

    Min. VAC = ( Vout. + 5 ) / 1.2

  • Input voltage (DC)

    Max. 40 VDC

    Min. VDC = ( Vout. + 5)

  • Frequency

    50...60 Hz

Output specifications

  • Current output

  • Current limit

    Typ. 5.8 A (short circuit)

  • Output voltage

    4.5...26.4 VDC

  • Output power

    Max. 40 W

  • Output current

    Max. 2.5 A / 5 VDC

    Max. 2.5 A / 12 VDC

    Max. 2.5 A / 15 VDC

    Max. 1.7 A / 24 VDC

  • Load effect, (0-max. load)

    < 1.5% / A

  • Output ripple

    < 20 mVRMS

Observed authority requirements

  • EMC


  • EAC

    TR-CU 020/2011

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