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 amp = trip current. > Fuses in the 100's of ma are available from Radio Shack. Not cheap but av= ailable. > > 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, and >> then have visual indication. They usually show a white band on the push >> button when tripped. >> http://aircraftproducts.wicksaircraft.com/viewitems/circuit-breakers/pus= h-pull-circuit-breaker? >> http://aircraftproducts.wicksaircraft.com/viewitems/circuit-breakers/kli= xon-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 fine >>> (use a 12 V lead acid battery) >>> =20 >>> >>> Years ago I replaced all the car fuses on a Citroen CX with domestic >>> resettable breakers (designed for 240V) including fitting a 100 amp un= it >>> 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 Behal= f 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 con= tact >>> 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 a= nd >>> show the breaker tripping. >>>> Its doable with a low current fuse but having the sound and reset abil= ity >>> of a breaker would more closely match a real house. >>>> If everyone is watching they might see the flash of the fuse but then >>> that's more pieces for him to track. >>>> Thoughts? >>>> >>>> thanks >>>> chuckc >>>> >>>> >>>> >>> -- >>> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/c= hange >>> your membership options at http://mailman.mit.edu/mailman/listinfo/picl= ist >>> >> --=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 > > --=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 .