Keeps tripping the breaker. - Vacuums

It might sound very easy , but lack of power is usually the cause of a vacuum cleaner that is not working . Check that the vacuum cleaner is plugged into a working power outlet and that fuses and breakers don't need resetting. An activated thermal cut-out due to a blockage is the next most likely cause of the problem.
Tripped Circuit Breaker/ Blown Fuse
Check service panel for tripped breakers/blown fuses. If breaker is tripped, reset it. If fuse is blown, replace it. If vacuum cleaner is plugged in, make sure that the power button is in the off position before having to reset the breaker/changing fuse.

Tripping the breaker likely means an electrical short somewhere.

Breakers trip when there is a short...looks are deceiving...electricity doesn't lie....you have a short...keep looking.

Motor is working too hard because filters are blocked.

If you can unplug the central vac and plug it into a different outlet that you know is on a different breaker and test it out to see if it trips the breaker,or temporarily rewire the central vac to a different power supply.Make sure the breaker is the correct amperage for the central vac,last read the instructions to see if you need a dedicated circuit breaker,you might have to many accessories plugged into that outlet.

see this step: God bless you
Check the house circuit breaker to see if it tripped?
Click here if you own a Vacuflo Central Vacuum Unit continuously trips your circuit breaker
If it is tripped, then turn off your central vacuum unit and reset the circuit breaker. Then turn the central vacuum unit on. If the circuit breaker trips again, then refer to the following:
Determine if the house circuit your vacuum unit is on has sufficient voltage required.
If your unit has a reset button, press the button and try again.
Cross the low voltage wire from the relay at the unit with a small screw driver. If you hear the relay click you need to replace your motor.
Click here to view Central Vacuum Motors
Click here to view How to replace a motor
If you do not hear a click, then you need to replace your relay.

From the description it sounds as if there had to be a short in the unit somewhere. This is what would have tripped the breaker. the fact that it is not tripping could mean that there is a fusible link or that the wires or whatever have burned back from the short, and are no longer shorting out.

Hi, when the breaker trips every time you turn it on, the unit has a dead short. It may have a frayed wire where it goes into the units motor, or the motor it self may be shorted out.A bare hot wire that touches metal will pop the breaker right away. I would look the cord over very well to see if anything may be bare. If not, the problem is further into the motor section of the unit, and more then likely the motor has failed. This is why the breaker is there for this reason. In case it overloads or you have a short, it trips to keep the unit from burning. Please keep me posted.
Sincerely,
Shastalaker7

try different outlets in another room to see if that dosent help you may have a shortin the cleaner but i think you may be overloading the breaker