i am a beginner to arduino. i wanted to use an arduino to trip an MCB by passing excess current through the circuit ( the general working of MCB ) when a particular command is given by the sensor attached as input. which device / circuit i should use to make this happen?
RAHUL_BAJAJ:
i am a beginner to arduino. i wanted to use an arduino to trip an MCB by passing excess current through the circuit ( the general working of MCB ) when a particular command is given by the sensor attached as input. which device / circuit i should use to make this happen?
Way too little detail. Also, what is a MCB?
MCB stands for minature circuit breaker which is used in most of the households instead of using a fuse. it trips when excess current passes through the circuit or overheating takes place. using an accelerometer i as input to the arduino i want to trip the mcb to break the circuit.
That is not a sensible project, it would involve deliberately overloading a mains circuit, it is not a safe thing to do. Looks like this is a X-Y Problem
this does not necessarily require passing high current. even being able to close a circuit will work out for me. so is there any way i could use an accelerometer as the input to the arduino to close a different circuit as the arduinos output. ? probably just to plug in a key.
this does not necessarily require passing high current.
So how do you propose to trigger the circuit breaker without passing current higher than the trip level?
You don't seem to have thought this through.
Why trip a circuit breaker at all? if you need to break a circuit to "switch off" a load use a relay.
If you really need to "trip" a MCB look to change to a MCB with an auxiliary trip device that will switch it off remotely.
NOT RECOMMENDED !!
Connect a load resistor having more current rating than the mcb through relay(5v) parallel to the regular mcb circuit....control that relay using arduino....when over current flows, mcb will trip the circuit....
shambhuskumar:
NOT RECOMMENDED !!Connect a load resistor having more current rating than the mcb through relay(5v) parallel to the regular mcb circuit....control that relay using arduino....when over current flows, mcb will trip the circuit....
And when the house gets finished burning down be sure to remember who gave you this stupid suggestion so you know who to blame.
is there any way i could use an accelerometer as the input to the Arduino
Yes, depending on the particular accelerometer, g-force range, etc.
Adafruit and SparkFun are good places to "shop" (for things like accelerometers) because they usually have full specifications and applications notes/hints. ..It's a good idea to buy relays from a reliable source also.
to close a different circuit as the arduinos output. ?
The Arduino needs a driver circuit to drive a regular relay coil. You can build that or you can get a relay board with a built-in driver. You can also get solid state relays that can be directly driven by the Arduino. Relays (both electromechanical and solid state) are electrically isolated so it's "safe" to connect to the AC power line as long as the relay is properly rated, but you won't find anything rated for a short across the power line!
The software (which you will have to write) will determine what happens to the relay with the readings from the accelerometer.
Why are we feeding the necro trolls? 
Paul__B:
Why are we feeding the necro trolls?
Because we weren’t paying attention and missed the dates. Thanks.