MEAN WELL has newly launched the rail-type 20A/40A redundant buffer module DBUF20/40 series, which can be used with DIN rail power supply for the short-term backup of the load, when the AC mains power is short-term or instantaneous, the DBUF20/40 will start the buffer function to provide stable 24 to ensure the operation of the system, the buffer time is determined according to the load current, DBUF20 can buffer 350ms under 20A conditions, DBUF40 can buffer 250ms under 40A conditions.
The DBUF20/40 is similar to the DR-UPS40 with uninterruptible redundancy function, and its main features are: It provides a short buffer time through internal electrolytic capacitor energy storage, no need to connect an additional battery, and reduces system maintenance costs without regular battery replacement. The DC-UPS40 requires an external battery, and the redundancy time can be longer but the battery needs to be replaced regularly. After the launch of the DBUF20/40 series, MEAN WELL DIN rail peripheral modules have been quite complete, providing 10-960W rail power supplies and peripheral accessory modules
Electrolytic capacitors are used to replace batteries as redundant buffers to save battery maintenance costs
24Vdc load can be buffered
Redundancy buffer time :
DBUF20: 350ms at 20A load
DBUF40: 250ms at 40A load
Buffer voltage can be flexibly switched: 22Vdc (fixed mode, factory setting), Vin-1Vdc (dynamic mode)
It can support multiple DBUF20/40 units in parallel to extend the buffer time
Operating temperature -25-+70°C
LED status indicator
Protection function: short circuit protection, overload protection, overvoltage protection, voltage reverse polarity protection (no damage)
Class I power supply (with ground terminal)
Passed CB/UL/CUL/EAC//CE international certification
Dimensions (WxHxD): 63 x 125.2 x 114.9 mm
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