Mates can you help me regarding this. I need to know how many Kaic (kiloampere interruptive capacity) is needed for circuit breakers for Putz MXR 28. Thanks.

Can you get me a serial Number for this unit.

This is probably from Germany and it might be best to call them, you are using a diferent power voltage then us in the USA

Dont want to send you the wrong way by guessing.

With a serial number and your operating voltage I can look into it but it might take longer than if  you contact Germany direct.

Either way we will try to help, I am assuming you are looking for the Size breaker for the main load lines from power source.

 IN MY EXPERIENCE WITH TOWER BOOM POWER SUPPLY YOU NEED TO GET THE ELECTRICIAN TO INSTALL A D-CURVE BREAKER TO ALLOW MORE CURRENT TO BE DRAWN AT ELECTRIC MOTOR START UP . OTHERWISE WHEN YOU TURN THE POWER ON IT WILL INSTANTLY TRIP THE CIRCUT BREAKER. HOPE THIS HELPS ... NEVER PLAY WITH LIVE POWER SEEK PROFESSIONAL HELP

I already know how many kaic needed but at what voltage? 400V also?

How many amperes MXR 28 has, for the circuit breaker.

600 volt 3 phase