Breaker selection advice request

[harryn]

Hi, I have a mostly 48 volt mobile application product.

The bulk of the chargers feeding in and loads are 30 amps or less ( on purpose ).

Right now I am using a high end fuse block arrangement because the power flow can be in both directions. ( some are charging / some discharge ) and the strong desire to use ring lugs for mobile use.  This ring lug use is a big deal to us vs screw down terminals.

They are usually mounted to din rail but sometimes screwed down to the mounting board.

Width wise, they are the same as the MNEDC breakers and we also use some of those in another location in the system.   

I would like to find a breaker that has the MNEDC terminals for attaching ring lugs, but that can fit on a din rail or be screwed down to a mounting board - for example like the the mnepv.

Ideally that is bi directional.

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I guess a related question is - for a polarized breaker viable to use with 48 volt DC that is only running ~ 60 volts and < 50 amps ?  Will it trip if the current is reversed from the designed polarity?

Thanks for any insights and suggestions.

Harry

[harryn]

Just so it is clear, I would like all of the handles on / off to be going the same direction when they are on vs tripped to avoid customer confusion.

The fuses are working just fine, but it is just easier for customers to flip a breaker vs changing a fuse.  The fuse holder is a very high vibration, extended temperature rated, 600 VDC setup.  The only reason to change to breakers is customer convenience / marketing.

Thanks