This type of circuit breaker is proven to be very unreliable and dangerous. I advise to use a decent DIN rail type DC breaker.
@OlanFantaziya
4 ай бұрын
For the voltages these cheap breakers are rated you don't need to get a Dc breaker. Most branded AC230V breakers are rated up to 60V DC anyway. Additionally they are way cheaper than branded dc breakers.
@pgScorpio
4 ай бұрын
@@OlanFantaziya It's more about current! and i.e. a 16A AC breaker is NOT suited to break 16A DC! Also, depending on brand, a DC breaker is just 10-30% more expensive that a AC breaker. Nothing worth taking the risk...
@OlanFantaziya
4 ай бұрын
@@pgScorpio We use mostly Schneider Electric and ABB for DC and Solar applications. Schneider iC60N AC230 B16 Breaker is rated to break 16A 10 times more than the AC ones. I pay 2,14€ for a AC 16A and 42,79€ for a DC 16A here in Germany. I don't know where you life, but I'm not aware of a country where branded DC breakers are cheap. Datasheet iC60N: 10 kA Icu at 60 - 72 V DC 15 kA Icu at 12 - 60 V DC 10 kA Icu at 220 - 240 V AC 50/60 Hz
@_BangDroid_
4 ай бұрын
Does it actually trip at ~30A? Many cheap Chinesium fuses and breakers are wildly off
@AlpineTheHusky
4 ай бұрын
Breakers not so much. Fuses yes...but not just chinesium ones sadly. Recently had a...uncomfortable call from a client at work where a lot of fuses refused to cut the circuit and there were a lot of components damaged. Turns out we got "defective" fuses stretching over 4 production batches by littelfuse. The first and last issue we will have with littlefuse fuses.
@_BangDroid_
4 ай бұрын
@@AlpineTheHusky Are you really saying cheap Chinese breakers are safe and accurate, or just highlighting your experience with fuses?
@maxusboostus
4 ай бұрын
I recommend you give it some tests before you install this in your shed. I saw some videos showing they were not safe to use. You can get DC fuses that look like the ones you have in the UK Mains consumer units. I have seen videos of those catching fire if you draw current the wrong way through it and flip the disconnect switch. Please don't set fire to your Shed! :-)
@philbrooke-little7082
4 ай бұрын
I too highly recommend that you don’t use it. I hear so many complaints about them and have met several faulty ones. They tend to nuisance trip in hot weather and the contacts go high resistance which causes heat, and the cable connections can get hot and make it trip early.
@TheEmbeddedHobbyist
4 ай бұрын
Breaking DC is a lot harder than AC, I can see the little red leaver moving into a sustained arc and just melting. For breaking high current DC I would use a contactor designed for it and possibly one with magnetic arc suppression to blow out the arc.
@dack42
4 ай бұрын
Yeah, it might even seem to work with a mild overload. However, under higher fault current I wouldn't be at all surprised if it fails to extinguish the arc and melts down.
@liquidus2172
4 ай бұрын
Instead of heating it up, you should have tested it with actual electric current to see if it will disconects at that rate.
@zaprodk
4 ай бұрын
No good. A breaker should disconnect FAST and have an arc arrestor. Not safe for use!
@paulwright8378
4 ай бұрын
I prefer to see it work with amps as stated not heat
@billharris6886
4 ай бұрын
I have tested these breakers extensibly and I don't recommend using them for anything. The contacts are only good for about 30 amps but, the contact alignment is very poor and, due to contact misalignment, very little of the face of the contact makes a connection when closed. There appears to be no calibration on the trip point so, a 30 amp breaker could trip at the same current as a 150 amp breaker. When nearing the trip current, some of these breakers chatter, which has the potential to damage the power source and load appliance. They are only good for about 24 volts DC and 10 amps if you want to risk using one. In use, they tend to trip at 1/3rd to 1/10th the marked current rating. Since these are a thermal breaker, ambient temperature and wire heating alter the breaker trip point (the warmer the temperature, the earlier they trip).
@gilesviney7631
4 ай бұрын
I'm not sure it's bi- metallic. It looks like it's using a mechanical bend and relies on expansion of the metal with heating, past the kink which "trips" it up past three fault line. I just bought one of these for my van conversion but I think I'll get a din rail one that works on more reliable method. I'm glad you did the tear down. Thank you.
@rogermckenzie2711
4 ай бұрын
I had a 100A version of this on my home power wall and replaced it with a different type due to it's "inaccurate" rating.
@plan9channel7
4 ай бұрын
I used one of these on my solar and I caught it smoking away. Never again.
@jayjames5839
4 ай бұрын
Haven't you got to be 21 or over to smoke?😅😅😅
@followthetrawler
4 ай бұрын
Can't see that small contact area taking 30A or anywhere close to it - stick it across a car battery and see what happens :)
@GenUltra758
4 ай бұрын
does this ... slowly open?? if so this is absolutely terrible for DC breaking.. if you have any inductive loads at all in a DC system and break the contacts slowly like the button suggests,, this will cause an arc and this thing is going to catch fire. i advide againsdt this. use a safe one which is spring loaded
@GenUltra758
4 ай бұрын
yes looking at the mechanism later on.. this is unsuited for DC loads.. slow opening, no arc arrestor.. this thing is a fire hazzard. please dont use this
@zaprodk
4 ай бұрын
@@GenUltra758 This!
@wv1vsu
4 ай бұрын
Thanks 🙏
@fuzz11111111
4 ай бұрын
The end terminals make this look a lot like the kind of fuseholder typically used in aftermarket car audio (though those have no switch and obviously arent circuit breakers), and after checking out the link it certainly appears that that's the intended use case for this too (though I'm not sure why you'd want a circuit breaker for car audio, the fuses don't typically nuisance blow if properly rated). Anyway I'm not sure I like it for in-home (or shed) use.
@tomk2165
4 ай бұрын
Your camera focuses by maximizing image high spatial frequency content. Try using a featureless background to help it focus on a small object in your hand.
@dr_jaymz
4 ай бұрын
He probably doesn't have a 30A source to test with. You'd need 45A to trip it reasonably quickly. A lot of these are dodgy, I tested a few until I settled on GLOSO which did we what it said on the tin. 100A with nice chunky terminals. You can pull about 120A for about 25 seconds and then it trips and the contacts work properly. Like him, I usually use it just for a quick disconnect with a safety feature in case I accidentally short the battery.
@dr_jaymz
4 ай бұрын
If you short the battery it will definitely blow but it might be terminal because the short circuit current of my 24V 100Ah battery is very large.
@emaglott
4 ай бұрын
test it to see what amperage it trips at!
@frenchcreekvalley
4 ай бұрын
I suspect that the "little flag" is used for arc suppression. What is maximum rated voltage for this device? I'll bet that, when used at its max rating, it won't last long if it operates very often.
@aamiddel8646
4 ай бұрын
Interesting to see the inside. And you explain very good why it is a DC breaker and not an AC breaker..
@MiniLuv-1984
4 ай бұрын
Nice tear down. What voltage are the breakers rated for?
@ruan2587
4 ай бұрын
12V
@MiniLuv-1984
4 ай бұрын
@@ruan2587 thanks.
@JulianIlett
4 ай бұрын
Up to 24V DC according to the listing.
@frankowalker4662
4 ай бұрын
Neat breaker.
@magnets1000
4 ай бұрын
looks chinesium quality
@stevenA44
4 ай бұрын
I wish you would have made this a few months ago. I had one of these I bought from a pallet bin store and it had stripped screw heads and I didn't know how to get it apart. Don't know where I put it now. I'll have to find it and see if I can repair it.
@VinoVeritas_
4 ай бұрын
You don't need a fuse on the panel cables.
@TheRealEtaoinShrdlu
4 ай бұрын
Yes, but having a switch on the PV side makes it easy to disconnect the panels in case of any maintenance.
@zaprodk
4 ай бұрын
@@TheRealEtaoinShrdlu You don't want to break PV with a breaker like this. It's only rated for low voltage. I would call it a fire risk.
@VinoVeritas_
4 ай бұрын
@@TheRealEtaoinShrdlu You don't need a switch for panel maintenance. All you need to do is switch off the loads attached.
@Dirt-Diggler
4 ай бұрын
I use inline MC4 fuses and a proper DC isolator. If you need to remove the battery from the SCC and don't disconnect the panels you risk damaging the SCC, I've never fitted a system without panel fuses and an isolator.
@JulianIlett
4 ай бұрын
If I break the panel-battery connection, there's only about 15V difference between them. Panel open circuit voltage is about 40V and the battery is typically around 25V.
@mikehigham23
4 ай бұрын
Try putting the plastic foot in the heat-gun with the bimetallic strip. If the strip clicks before the plastic drips :;) - All's Good. Otherwise, Cancel the Order.
@gedtoon6451
4 ай бұрын
I find it hard to believe that bi-metallic strip contact is good for 30A
@DastardDek
4 ай бұрын
I used a few of these rated for 20a for a solar project, they would trip constantly just from the heat induced by the poor internal contact. Never even came close to 20 amps. went back to ANL fuses and DIN style breakers and haven't had issues with anything since.
@maffysdad
3 ай бұрын
Would be much safer to have an electronic disconnect/fuse instead of these bi-matalic type fuses. If you're already using a switch that has a permanent break and manual relatch, then might as well just use a normal heavy duty car fuse that you can replace. But yeah, as others have said, avoid this style of fuse, and as the stripdown proceeded I noticed the contact points were not flat, so it' going to heat the contact points up and fuse them, likely preventing the 'spring' of the metal from disconnecting. Just an overall bas design.
@agy234
4 ай бұрын
I don’t think I’d trust a circuit breaker from AliExpress
@vince_martyn
4 ай бұрын
I had the higher rated one in my caravan connected to an inverter and like many others are saying, saw a comment to say they are unreliable, so changed it. Please give it a test Julian.
Пікірлер: 51