[Dprglist] Circuit Breakers

[David Ackley]

Hi

Be careful. Remember that these circuit breakers and not very fast. 
Looking at the datasheet these 5A circuit breaker "worst case" could take as
long as 30 seconds to trip with a 10A load and "best case" it will trip in 4
seconds with a 10A load.

Dave Ackley

-----Original Message-----
From: DPRGlist [mailto:dprglist-bounces at lists.dprg.org] On Behalf Of Murray
Altheim via DPRGlist
Sent: Thursday, November 19, 2020 10:45 PM
To: dprglist at lists.dprg.org
Subject: [Dprglist] Circuit Breakers

Hi,

In our last videoconference on Wednesday we discussed the importance of
having a system-level fuse, so that if we short out a motor or a battery
things don't quickly go south. With most batteries that can start a fire,
with lithium-polymer batteries that can result in an explosion.

Rather than using a fuse (which would be fine) I was pretty sure I'd seen
some small circuit breakers. Sure enough, there's an automotive style, mini
blade circuit breaker that fits into a standard socket ("conforms to SAE
J553 standard"), pretty cheap too. They seem to come in various amp and
voltage ratings, and come in push-to-reset and automatic-reset versions.

At Digikey there's a series from OptiFuse, e.g.:

   28V 5A
   https://www.digikey.com/en/products/detail/optifuse/MRCBP4-PM-5A/11581894

   28V 7.5A
 
https://www.digikey.com/en/products/detail/optifuse/MRCBP4-PM-7-5A/11581669

   28V 10A
 
https://www.digikey.com/en/products/detail/optifuse/MRCBP4-PM-10A/11577680

with the link from OptiFuse themselves at:

   https://www.optifuse.com/circuit-breakers-Type2-mocbp4-pm.php

Hope that's of some help,

Murray

..........................................................................
Murray Altheim <murray18 at altheim dot com>                       = =  ===
http://www.altheim.com/murray/                                     ===  ===
                                                                    = =  ===
     In the evening
     The rice leaves in the garden
     Rustle in the autumn wind
     That blows through my reed hut.
            -- Minamoto no Tsunenobu

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