Circuit Breaker Trip Curves Explained

[@maxxxima]

Arnold is that you? :D Very good explanation.

[@rohamtavakkoli7562]

exactly my thoughts... XD

[@carlosgruss7289]

Lol he sounds exactly like him

[@thelegacy5368]

Quite fascinating and very intuitive! Thank you

[@Hypocricy_rules_supreme]

Very informative. I really enjoyed the presentation.

[@Mabh838]

Thank you for effort and clear explanation 🙏

[@michaelcostello6991]

Good video. Would be nice if Zs fault loop impedance was considered also in making selection

[@ChemiiOneLegacy]

I know this is probably going to get a slow response but I have a query. If I'm using a 16A breaker with a voltage rating of 48VDC, does that mean if I have a device that is 12V it will still have the same trip characteristics and break only at or above 16A? I've heard that the voltage rating is to protect the breakers internal components and has very little to do with it's breaking capacity but it's difficult to get my head around. 16A at 48V is a lot more juice than 16A at 12V.

[@zakysmart1]

according to B curve if 2*rated current flow throw the load ..how many seconds will take from the instance of flowing till tripping ? you said it will trip immediately ,but i think the breaker have to trip after some seconds ? i'm i right ? another question what is the expected over load current which will trip the breaker after one hour ?

[@johnhiker6967]

Very clear explanation of time-current curve... thank you sirs

[@fishboneanalysis101]

very clear explanation and practical

[@wjimenezu]

Useful and very professional. Thanks for explaining

[@christopher8220]

Cool! How did you gys get the former governor of California to be your speaker???

[@Joe_Mission]

Why is time graphed along the Y-axis for trip curves?

[@nieldewet5315]

because the trip time is dependent on the current

[@altuber99_athlete]

5:20 I think that explanation is wrong. The “no trip” area is correct. The “instantaneous trip” is incorrect”. Instead, the dark blue curve has two borders, or bounds, or curves: one for the minimum time for a given current and another for the maximum time for a given current. Hence, for a given current, the breaker doesn’t trip at a specific time, but instead within a time interval, which is inside the dark blue curve. Therefore, what the video calls as “instantaneous trip” is misleading because that zone or area is above the maximum time the breaker takes to trip for a given current. On the other hand, the left part of the dark blue curve, where it looks like it goes up (upwards in Y axis) as the current goes down (to the left in the X axis), is the thermal trip zone: inverse time. If we move to the right, we see a sudden fall in the curve. That’s the magnetic trip zone: instantaneous time.

[@Hypocricy_rules_supreme]

Are you referring to the I3 and I4 borders? If so, I agree with you

[@eduardosantibanez7444]

Good video. Thank you. One question, is same short time with short circuit?

[@terretulsiak]

I love that you are making this information accessible. I want to see more women in tech which starts in lower education by introducing GIRLS to something other than fashion and makeup. How can we promote this interest?

[@MrJames-nx3un]

very clear explanation. Thank you sir!

[@AltechCorp]

Hi Egyptian guy, at 2x rated current the B trip will trip in about 60 seconds. So, yes you are right, it's not instantaneous. Sorry about that! To your other question, the overload current is 1.45 x the rated current. Thanks for watching the video! Klaus Tum

[@deancassin6594]

surely you mean to multiply the current ratings, ie. its not 2 amps that will trip a 10 amp breaker, but 2 times the current rating of the 10amp breakers so 20amp.

[@sohailjanjua123]

Hi , I like your lecture.Thanks

[@roymillar4895]

Sorry I fell asleep. What were you saying?

[@SinazoJara]

Thank you 🙏

[@felipegarcia05189]

Good explanation thanks

[@PlasmaHH]

Calling it "instantaneous trip" when it really means "you can be sure after that time it will trip" is a bit misleading.

[@MDNPLAYERS]

that's easy. What i can't undestand is when there are eletronic trips like micrologic of schneider. Player=Doctor

[@AltechCorp]

The breaker should be hp rated and should be tested to provide overload protection. Our UM series would be the most cost effective solution for that. Please contact Klaus at Altech, 908-806-9400. or [e-mail].

[@sohailjanjua123]

Hi I like your video

[@SoleilCustomGuitars]

That's what I was thinking

[@AcousticKaraoke]

arnold :D