Going from 30amps to 15amps

[Regnar]

I have a 220v 30 amp circuit that I can plug the control box into. I use this circuit for the welders and the mill but I cannot use any of them at the same time. My question/thinking is that it probably not good to have 30 amps on the machine with out some sort of protection. Especially to the router. So I was wondering if something like this will work out. I read Gerald that you dont like fuses in the box but would this be ok in your mind for my situation. Its a circuit breaker that is din mountable. I would have to say its comparable in price to other circuit breakers here in the Big Box stores and it would be cheaper then running a new 20 or 15 amp circuit.

http://www.automationdirect.com/adc/Shopping/Catalog/Circuit_Protection_-z-_Fuses_-z-_Disconnects/UL1077_Rated_Supplementary_Circuit_Breakers/Single_Pole_Circuit_Breakers_%28WMS1_Series%29/B_Curve_%28WMS1Bxx%29/WMS1B15

PDF.
http://www.automationdirect.com/static/specs/suppprot1p3p.pdf

They also have a 1 amp. I was thinking a Class D curve for the router and Class B Curve for the Estop Circuit.

[Gerald D]

Hi Russell, those circuit breakers are common around the world, and they are good. B-curve trips faster than D-curve....I see no need for you to consider anything other than B-curve.

We run 220V routers off 20Amp B-curve breakers. In fact, we used to run a complete MM, with its PC, control box and board hold-down vacuum on a single A-curve breaker. (Standard practice for wiring buildings here (230V) is a 20 Amp breaker for the wall outlet points and then wire size is 2.5mm2)

[Regnar]

Thanks Gerald. I had a feeling it was going to be alright.