TOMZN 250 AMP DC Breaker/Disconnect

[@tenzinchiodak4537]

Thanks for verifying the polarity on this thing. I recently received mine and had the same question. I was really unsure as the other MCCBs off Aliexpress don't have that cross. So ya, thanks a lot for this video!

[@daniloantonelli5196]

Just got one, exatly the same, from Aliexpress. I was unsure about the + / - notations and something wrong in the device. Good that it is normal.

[@med687]

Hello, I’m looking to buy this breaker, I’m just wondering if you have installed it and working well, I’m worried about the polarity, your help would be greatly appreciated, thank you for sharing your video.

[@MMMM2MMMM2MMMM]

How are you going to mount it on a wall?

[@MMMM2MMMM2MMMM]

How can you guys tell it is a polarised breaker? If it is, i need to return it.

[@mr.garibaldi182]

I have this circuit breaker and a seller told me that power cords can be installed from top side and from a bottom.. its bidirectional... can some1 pls confirm that?

[@fabiomiguel3]

Any update on this?

[@UKsystems]

This can be due to translation issues they can also mean they want current to flow one way through and that hybrid inverted are on suitable as writing that could be quite hard for someone who has very limited English

[@ricardophelps6323]

You clarified the breakers are vertical but is there a particular direction the current should flow? ie from the battery in at the top and out at the bottom to loads/ busbars or doesn't it matter which way Thnx

[@mr.garibaldi182]

I have smaller breakers but this exact brand and seller told me its bidirectional but i dont know for sure and trus is a good thing but I would like to know for sure....

[@Rando32]

This is a polarized breaker and has to be wired correctly. If not it can't extinguish the arc and catches on fire. That's what the + and - mean. This shouldn't be used with a hybrid inverter.

[@MMMM2MMMM2MMMM]

How can you tell it is a polarised breaker? TOMZN claimed it is bi-directional. If it is polarised, i need to return it.