Just moved into a new house that had a new oven when we moved in. After the first use the breaker trips but there's still power to the unit. Is the source of this a faulty breaker?
What size is the breaker? An electric stove will normally be supplied by 240 V through a 40-A double pole common trip breaker. If the range is still getting some power, but the oven is not heating then it could be that one leg is tripped and the other is not.
Do all the surface burners heat at full heat. I am sure that these are supplied at 240 V so if you turned them each on singly to high and they all work, then you are getting 240 V to the range. If you turn them all to high at the same time and the breaker does not trip, then I would say the oven is malfunctioning (shorting). Does the broiler work?
Ok let's start with some basic electrical. If a circuit is attache to a breaker it is physically and mechanically disconnected form the power. So how does your range have power?
The only scenario where it can be getting power is from a second source. That would mean the range is getting power from a second circuit or more likely somewhere in your electrical system you have lost a leg or neutral and power is in back flowing into your range.
First visually check to see if there are any other circuits acting peculiar or or showing signs of low voltage. Thing I call ghost electrical, you know "I turn the lights off and the AC comes on and the lights come back on". Second go to your panel and turn every breaker on to see if it kills the range and locate the circuit that is back feeding. If those don't work then your going to have to locate it with an voltmeter if you have one or seek experienced help.
Turn on of all breakers including your main and begin checking voltages first from your meter then turn on your main and check the bus, Then start a progressive search one breaker at a time.
Remember if you are doing this then you have removed the panel cover and you are dealing with live circuits. So approach it with extra caution.
Stay safe and good luck