ZJBeny DC breaker load side

[uksa007]

Hi,

So I'm using a ZJBeny 125A DC circuit breaking between my 16* 280Ah, 51.2V Battery and Inverter.

BENY BDM Series: DC Circuit Protection for BESS | BENY New Energy

BENY New Energy's BDM series, including BDM-125 and BDM-250, offer robust DC circuit protection for BESS, with a 500V rating and up to 250A current capacity.

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Just trying to work out if the ZJBeny circuit breaker has a dedicated side that the load must be connected.
It doesn't have a polarity, but does have +/- -/+ at the top on the sticker, see photo below.

It would be preferential to use the top for the load due to cable routing as using(oversized) 35mm2 or 2 AWG cable, but don't want to cause issues.

Can the load be on the top terminals 1,3
Battery on the bottom terminals 2,4 ?

 

[Quattrohead]

Supply into the top, load into the bottom as it clearly shows on the label.
The electro-mechanical reason is not to have a potential failure of the moving parts still connected to the power supply.
Turn the breaker upside down if you wish.

 

[uksa007]

Thinking further about this, the inverter is also a charger so both sides of the breaker will be load and supply at different times.
I guess the battery has the potential for the highest fault current.

 

[uksa007]

Turn the breaker upside down if you wish.

Would turning it upside down cause a potential issue with arc snubbing? (apart from all the electrons falling out)