Ultra-compact switch-mode power supply CA-U4

CA-U4 - Ultra-compact switch-mode power supply

*Please note that accessories depicted in the image are for illustrative purposes only and may not be included with the product.

  • CE Marking
  • UL Listing(c/us)
  • UL Recognition(c/us)





24 VDC Power supply

Input conditions

Rated input voltage

85 to 264 VAC , 47 to 63Hz , 110 to 370 VDC*1


82% (100 VAC)/85% (200 VAC)typ. (with 100% load)

Rated input current

2.2 A or less (100 VAC)/1.1 A or less (200 VAC)

Output conditions

Rated output voltage

24 VDC

Rated output current



Overvoltage protection

Constant current voltage limiting. Automatic reset 7.9 A min.

Activates at 26.4 V or more. Voltage interruption method,
recovers when input is applied again.*2

Applicable standards

Safety standards

UL : UL508、UL60950-1
C-UL : CSA C22.2 No.14-M95, CSA C22.2 No.60950-1-03
EN : EN62368-1、EN50178
IEC : IEC62368-1

EMC standard

FCC Part15B Class A, EN55011 Class A, EN61000-6-2

Limits for harmonic current emissions


Environmental resistance

Ambient temperature

-10 to +55 °C (No freezing)

Storage temperature

-20 to +70 °C (No freezing)

Relative humidity

85% RH or less (no condensation)


Approx 700 g

*1 The rated input voltage and rated frequency when applying for safety standards are 100 to 240 VAC, 50/60 Hz.
*2 To recover, turn off the input power supply, leave it off for 1 minute or more, and then turn it on again.

Data Sheet (PDF) Other Models