Dryer causing circiut breaker to trip

This link has the part that is probably bad: Hotpoint Washing Machine Compatible Door Interlock - Part Number INT51 for bwd129 (ransomspares.co.uk)

Try increasing the ampere rating of your breaker or remove other load(i.e. aircon unit, water heater, washing machine etc.) when dryer is connected so as not to overload your breaker that is causing mains to trip. If previously you are using the dryer with the same setup and loads maybe the breaker is the problem.

Check the circuit breaker for the plug the dryer uses. Open your house power panel and locate the breaker for the dryer. It will be 2 breakers connected together by a metal pin so when one trips it will trip the other. This shuts off 240 volts. Sometimes only one breaker will trip without tripping the other one. This leaves the dryer with 115 volts to work the rest of the machine but won't power the heating element. Replacing the breaker will fix the dryer.

There isn't one to replace. If the dryer runs but won't heat, one of the two circuit breakers in the power panel for the house has tripped. If the dryer won't run at all then both breakers have tripped.

Check to make sure the breaker is rated for the current draw of the dryer. If it is, you MAY have a bad breaker. Replace your breaker and If the dryer is still tripping the breaker, your dryer needs to be repaired by a qualified technician.... the heating element is probably burned up and shorting out.

heater is most likly shoreted but there is somthing electrical that has gone to ground causing the breaker to trip would be best to have a tech look at it

I would guess it is a short> possible causes:
1) outlet: turn off breaker to outlet pull cover off and look for burnt or loose wires
2) dryer cord: take back metal plate off of dryer look for burnt or loose wires
3) heating element
4) check all internal wiring for burnt or loose connections

The breaker for the dryer should be a 30 amp breaker, and should only trip that breaker. If it is tripping the main on the panel then something else is wrong. You will need to pull off the panel the the breaker box and pull out the dryer breaker and look to see if it burnt, make sure the wires are tight on the breaker, you may want to try a new breaker also. Hope this helps Tim

here is a website that may help:

http://www.applianceaid.com/general.html#fuse

There are a couple of things that you can check. FIRST go to the electrical box where the circuit breaker or fuse for the dryer is. Sometimes on half of the circuit breaker is tripped allowing the controls of the dryer to work, but not the heating element. Turn off the breaker and turn back on. Or replace the fusees. If this does not work, then you may have a loos wire or a burned out heating element. Sometimes there is a bad high temperature switch. Do the circuit breaker or fuse first. If the washer did not spin out the water well enough, the water can short the element to trip the circuit breaker or blow a fuse.

some part of the heater element must be touching the metal enclosure in order to cause the breaker to trip. if it is just cracked it won't heat but the breaker won't trip.
first unplug the dryer then look for any part of the element touching a grounded part of the dryer (metal) parts.

always look for the obvious first like loose or burned off wires from their terminals.

The first thing I would do is install a new circuit breaker. That could well be your problem.