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  • Double-isolated transformer
  • 3.75 kVAC isolation voltage
  • 30 VA ring core transformer
  • Thermal overload protection
  • 12 or 24 VAC secondary voltage
  • Standard 11-pole relay socket
  1. Overview +

  2. Technical details +

  3. Accessories +

Advanced features

  • Two transformers may be paralleled for higher output power.


  • Transformer for supply of components with 12 or 24 VAC supply voltage.
  • Transformer for stabilized DC power supplies, e.g. type 2229.
  • Suitable for PELV/SELV applications.

Technical characteristics

  • Standard primary input voltages of 115 or 230 VAC.
  • Standard secondary voltages of 12 or 24 VAC.
  • Ring core transformer with separate 3.75 kVAC isolation voltage between primary and secondary windings.
  • Fitted with a thermal fuse.
  • The device is supplied with a retention clip for a safe attachment to the relay socket.
  • 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.


Data sheet

EAC 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. 600 g

Common specifications

Isolation voltage

Isolation voltage, test / working 3.75 kVAC / 250 VAC
Power derating Tamb. > 25°C, 0.4 VA/°C
EMC immunity influence < ±0.5% of span

Input specifications

Primary voltage 207...253 VAC 97.75...132.25 VAC
Frequency 50...60 Hz

Output specifications

Secondary voltage (loaded) 24 VAC / 1.25 A 12 VAC / 2.50 A
Secondary voltage (unloaded) 28 VAC 14 VAC
of span = of the presently selected range

Observed authority requirements

EMC 2014/30/EU
LVD 2014/35/EU
RoHS 2011/65/EU
EAC TR-CU 020/2011

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