MEAN WELL newly introduced the DBUF20/40 series of DIN rail-mounted 20A/ 40A buffer modules, which can be used with DIN
rail power supplies to provide short-term backup for the load. DBUF20/40 will enter the buffer mode when the AC mains power
is temporarily suspended or interrupted. The buffer function provides stable 24Vdc to extend the system operation time,
and the buffer time depends on the load current. The DBUF20 can sustain 20A load for 350ms, and the DBUF40 can sustain
40A load for 250ms.
The DBUF20/40 can provide similar functions as the DR-UPS40 uninterrupted power backup function. The main feature of the
DBUF20/40 is to provide a short buffer time through the internal electrolytic capacitor energy storage. There is no external battery
in the system, and the system maintenance costs reduce significantly since no battery replacement is needed. On the other hand,
the DC-UPS40 requires an external battery. The backup time can be longer, but the battery needs to be replaced regularly.
After the launch of the DBUF20/40 series, MEAN WELL's DIN rail power solutions have been completed,
as MEAN WELL can now provide 10~960W DIN rail power supplies and various peripheral accessory modules in one-stop-shop!