He's looking for something that gives an audible indication of tripping and which requires a manual reset, since it is a demonstration of how a house electrical system works. On Sun, Nov 24, 2013 at 8:44 PM, David VanHorn wrote: > Polyswitches might work for you. > On Nov 24, 2013 6:42 PM, "Charles Craft" wrote: > > > What I'm looking for may not exist. > > Not sure what the power source will be looking for a breaker under 1 am= p > > trip current. > > Fuses in the 100's of ma are available from Radio Shack. Not cheap but > > available. > > > > thanks > > chuckc > > > > > > -----Original Message----- > > >From: Carl Denk > > >Sent: Nov 24, 2013 8:08 PM > > >To: "Microcontroller discussion list - Public." > > >Subject: Re: [EE] Low current breaker > > > > > >Here are a couple of circuit breakers that are noisy when tripping, an= d > > >then have visual indication. They usually show a white band on the pus= h > > >button when tripped. > > > > > > http://aircraftproducts.wicksaircraft.com/viewitems/circuit-breakers/push= -pull-circuit-breaker > > ? > > > > > > http://aircraftproducts.wicksaircraft.com/viewitems/circuit-breakers/klix= on-circuit-breaker > > ? > > > > > >These are pricey, but usually can be found much lower cost. > > > > > >On 11/24/13 7:44 PM, pic wrote: > > >> Normal house fuses/breakers will pop at the rated current, voltage i= s > > >> immaterial so you could just use that > > >> In the UK lighting circuits are normally fused at 6 Amps, so > depending > > on > > >> the psu being able to supply the current to trip it this will work > fine > > >> (use a 12 V lead acid battery) > > >> > > >> > > >> Years ago I replaced all the car fuses on a Citroen CX with domestic > > >> resettable breakers (designed for 240V) including fitting a 100 amp > > unit > > >> for the alternator output, > > >> It all worked faultlessly for over ten years, no changing fuses, jus= t > > >> occasionally flip a breaker on again > > >> > > >> PC > > >> > > >> -----Original Message----- > > >> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On > > Behalf Of > > >> Carl Denk > > >> Sent: 24 November 2013 22:31 > > >> To: Microcontroller discussion list - Public. > > >> Subject: Re: [EE] Low current breaker > > >> > > >> My heating contractor talks of a "Popper". As far as I can deduce, > it's > > a > > >> breaker in the form of a blade fuse like automotive. Probably in the > > >> 2-3 amp ratings. > > >> > > >> What about when the circuit opens, a relay drops out, normal closed > > contact > > >> closes, triggers a 555 timer with a sonalert buzzer, and an LED > strobe. > > Or > > >> program a small PIC to do the work. :) > > >> > > >> > > >> On 11/24/13 5:08 PM, Charles Craft wrote: > > >>> My son is working on battery powered circuits in school. > > >>> Near the end they will wire up a model of a small house. > > >>> We would like to add a breaker inline so that he can short two wire= s > > and > > >> show the breaker tripping. > > >>> Its doable with a low current fuse but having the sound and reset > > ability > > >> of a breaker would more closely match a real house. > > >>> If everyone is watching they might see the flash of the fuse but th= en > > >> that's more pieces for him to track. > > >>> Thoughts? > > >>> > > >>> thanks > > >>> chuckc > > >>> > > >>> > > >>> > > >> -- > > >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > View/change > > >> your membership options at > > http://mailman.mit.edu/mailman/listinfo/piclist > > >> > > > > > >-- > > >http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > >View/change your membership options at > > >http://mailman.mit.edu/mailman/listinfo/piclist > > > > > > > > -- > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > View/change your membership options at > > http://mailman.mit.edu/mailman/listinfo/piclist > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .