Circuit Breaker Working Principle at Slow Motion

#ErCanEverything #CircuitBreaker #SlowMotion

[Sim_Tiby]

Nice test. At a short somewhere in the circuit, the current must increase so high that the solenoid coil triggers. For fuses with C curves, the rated current of the fuse is multiplied by 10. For fuses with B curves, the rated current of the fuse is multiplied by 5. Ex: C16 = 16A x 10 = 160A x 1.5 hazard = 240A. So a C16 needs a short-circuit current between 160A and 240A to trigger in the event of a fault. B16 = 16A x 5 = 80A x 1.5 hazard = 120A. So a B16 needs a short-circuit current between 80A and 120A. As such, if the network cannot discharge such a high current at a short circuit (long paths, many and oxidized contacts, far post transformation) then the fuse will not trigger, or it will not do so in a timely manner (maximum 0.4 sec) and the conductors will melt or catch fire. The short-circuit current can be measured with special devices. So, draw the conclusion whether it is better to use C curves or B curves. Sometimes I find C20 or C25A fuses on 2.5mm² or even 1.5mm² conductors, which would require a short-circuit current of 250A - 375A. (Even if the current cannot rise to such a high value, eventually the bi-metal overcurrent protection will trip, but in 5-10 minutes, depending on the current, but during this time the conductors will melt).

[Isroil]

Кто ещё долго искал размыкающий контакт😂

[samuelmartin]

Appears to be a simple electromagnetic pulse which triggers the electromagnetic solenoid (much like an automobile starter)
that disengages the breaker switch....
absolutely awesome simplicity 😮😊👏

[Aloha_XERO]

Now that’s something you don’t see everyday

[MSM]

That's a short circuit case as the electromagnetic protection trips the switch off. In case of overload the bi-metallic thermal protection which is in the upper right corner pulls the trigger

[mattheww]

Great video, I’ve always been interested in how they work.

[thednovino]

Two types of breaking sense reaction in breaker, one is thermal plate and the other one is coil magnetic reactance

[BypassOne]

An item that we all use on a daily basis is also one of the best electrical engineering systems we created...

[gerardzi]

The brand of this circuit breaker ? Good slowly motion 😊

[BroGunaShekarpandi]

First time I seen like this video. thanks bro !

[elcuriousdg]

Buen video .. siempre quise saber cómo eran por dentro pero más que todo como funcionaban

[jesus_malik]

Amazing video! I spent a long time there trying to discover how this circuit works. Thank you very much for this video!

[marianomastrogiacomo]

Excelente animación del interior de una llave térmica 🤙🏾😉

[deltab]

This is YouTube Shorts in more than one way.

[truustonr]

I don’t even know what’s happening but damn it looks cool

[КТМ]

Так вот зачем радиатор, для тепло отвода дуги, интересный видеоролик 👍

[adhamali]

السلام عليكم لو عايزين منظومه كاملة تشغل مولد ٢٠ كيلو كام التكلفة وحضرتك اللي تصممها وكام استهلاكها من كهرباء المولد

[suyogghadling]

I need more slow to understand... It is interesting

[flaplaya]

Ill never forget being incorrectly taught by super know it all master electrician that it works off heat in the circuit. Partly right. Thermal/electromagnetic both determine short. Amazing how that little guy can interupt tens of thousands of amperes and direct the arc blast into a silencer. Pure Silver contacts also, it's why they are so crazy expensive.

[bobweiss]

That's a test of the magnetic portion, which protects against short circuits. Lets see a test of the thermal portion, that protects against overloads.