Yes, Acti9 iC60N/H MCBs are suitable for DC applications ranging from 12VDC to 250VDC subject to the number of poles connected in series and the required breaking capacity.
The attached document shows the number of poles that are required to be connected in series in relation to the supply voltage and the breaking capacity that is achieved.
The magnetic tripping threshold of the Acti 9 and older Multi 9 circuit breakers is higher than in alternating current. The magnetic tripping threshold is determined based on the attached documents.
The 4 pole Vigi unit is the A9V02763.
See below for more information
https://eshop.schneider-electric.com/product.aspx?org=21&lang=1&dist=276&prod_id=A9V02763
Yes, there is a padlocking device. The part number is A9A27049 and it comes in lots of 10.
For further information please visit https://www.clipsal.com/Trade/Products/ProductDetail?catno=A9A27049
Part number for a 3 pole 32 amp 'D' curve Breaker in 10kA is....A9F55332
See link for more detail....
https://eshop.schneider-electric.com/product.aspx?org=21&lang=1&dist=276&prod_id=A9F55332
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