I recommend just buying a circuit breaker like those below and shorting a standard C or D cell through its terminals to cause it to trip. (May require more than one cell in series to pass enough current to cause a break) 1A Thermal Breaker http://www.digikey.com/product-detail/en/W58-XB1A4A-1/PB193-ND/45078 0.5A Thermal Breaker http://www.digikey.com/product-detail/en/T11-311-0.5/486-2313-ND/641452 0.5A Thermal Breaker http://www.digikey.com/product-detail/en/W28-XQ1A-0.50/PB181-ND/45054 On Mon, Nov 25, 2013 at 9:58 AM, S&DeMario wrote: > look for hydraulic/magnetic circuit breakers, like this assortment: > > http://www.carlingtech.com/hydraulic-magnetic-circuit-breakers > > > They are very precision one's and have in low current versions. > > I say nothing about price...but look at Mouser, for hydraulic magnetic > > > Vinicius > > > Em 24-11-2013 23:37, Charles Craft escreveu: > > 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 is > >>> 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 fi= ne > >>> (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, just > >>> 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 wires > 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 the= n > >>> 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 > --=20 Jason White --=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 .