12 volt DIN Rail DC switch mode power supply 12V 4.2A 50W

9 In stock
£39.59 £32.99

DIN rail supplies are a long awaitied addition to our power supply range. 

As we have been stocking the Heng Fu range for many years now, we are confident of the quality and reliability of these supplies. 

Coupled with competitive pricing, there really is no need to source elsewhere.


Universal AC input, 12 VDC Output, 100% load burn-in tested.

Overload, over voltage and short circuit protection.

  • Load regulation: 0.5%
  • R&N: 120mV p-p
  • Efficiency: 80%


45mm x 89.2mm x 75.2mm


AC input range selected by switch

High reliability, low cost

Installed on DIN rail TS35/ 7.5 or 15


Protections: overload / over voltage / short circuit

AC input voltage range

85~132 / 170~264VAC selected by switch

Input frequency


Inrush current

cold start, 20A/115V, 40A/230V

Input leakage current

Less than 1mA / 230VAC

Line regulation (full load)

Less than or equal to +/- 0.5%

Output voltage adjust range


Short Circuit Protection

hiccup mode, auto-recovery

Output overload protection

105~150%, hiccup mode, auto recovery

Output over voltage protection

115~150%, shut off, re-power on to recover

Withstand voltage

I/P -O/P: 3.0KVAC/1min

I/P -F/G: 1.5KVAC/1min

O/P-F/G: 0.5KVAC/1min

Rise time

50ms@full load (typical)

Hold up time

20ms@full load (typical)

Operating temperature

-20degreesC ~ +70degreesC (ref. derating curve)

Safety standards

meets UL508, UL60950, EN60950

EMC standards

meets GB9254, EN55022 classB, EN55024

EN61000-3-2,3, EN61000-4-2,3,4,5,6,8,11

Cooling method



3P / 7.5mm pitch, plug-in terminal block

5P / 5.0mm pitch, plug-in terminal block





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