FAQ
Q.
I would like to select a breaker. What are the different times for inrush current flow?
  • Stromversorgungen
  • >
  • DC-DC-Wandler
  • /
  • AC-DC-Netzgeräte


A. The inrush current varies depending on the model.
For the inrush current waveform, see the section on "Input Surge Current (Inrush Current) Characteristics" in the model data on the technical data page of each product on the product information website (TDK Product Center).

Depending on the performance characteristics of the breaker, this inrush current may trip a breaker.
Breaker characteristics: Before selecting a breaker, check the section entitled "Operating Time Against Current Ratio" to confirm that it is outside the operating range of the breaker.
Breaker types suitable for the switching power supply are low-speed breakers or delay breakers, which are resistant to being tripped by pulse current.
Moreover, please perform an evaluation using the device.