Author Topic: Panel mount MNDC breakers still required for bi-directional DC breakers?  (Read 483 times)


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Hi, at one point in time, the DIN rail mount breakers could only be used in one directional DC flow and the panel mount (MNDC style) could be used bi-directionally. (IIRC)

Is this still the case ?

I looked at the data sheet and wasn't completely sure.

If it matters, the application will have 12 and 48 volts and on these particular breakers, only 30 amps max.


« Last Edit: August 08, 2017, 01:31:25 AM by harryn »


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I remember reading in another post that the Din rail mount breakers must be installed with the correct polarity but the panel type breakers can be wired in any direction even though the sticker on them has one terminal labeled line .

Discussion on this was here

« Last Edit: August 08, 2017, 10:02:03 AM by ClassicCrazy »
system one
Classic 150 , 5s4p  Kyocera 135watt , 12s Soneil 2v 540amp lead crystal for 24v pack , Outback 3524 inverter
system two
Classic 150 ,5s 135 watt Kyocero , 16s Calb 100AH LiFePO4 , Outback VFX 3648 inverter
system three
Midnite KID MPPT 24 DC in to  12 volt AGM batterie