Bimetal switches have been used for decades and proven generally to provide
an adequate or better safety protection function. Not all bimetal switches
are autoreset types; some require manual resetting. I've also experience
bimetallic thermal protectors in motors in an open failure mode, more oft
It is perfectly acceptable to use an auto reset thermal switch to prevent a
hazardous condition from occurring provided that it conforms to an
appropriate standard and is used is a situation that it is designed for.
You will find that something like a Thermik auto reset switch has been
tested for
Luiz,
I am coming from a risk assessment perspective only, not a standards or
regulation one.
What is the worst case result of every device going bad and leaving the heat on?
What is the probability of this occuring?
Base your decision on these points. Where is your limit of risk?
What if the b
> A standard that covers thermal cut outs is IEC60730. Thermal links
> are covered by IEC60691.
>
> Regards
>
> Chris Colgan
> EMC & Safety
> TAG McLaren Audio Ltd
Chris's advice piqued my curiosity, so I looked in a distributor's
catalogue (RS Components, here in the UK) and found that only
Luiz -
Bimetal switched are used as manual and automatic reset thermal protectors
in electric motors, transformers. Very common and has been for many years.
Regards,
Peter L. Tarver, PE
ptar...@nortelnetworks.com
-Original Message-
From: jim_bac...@mail.monarch.com [mailto:jim_bac...@
Depends. If the thermal cut out fails, can the product reach unsafe
temperatures? If yes then it is a protective device, if no then it isn't.
A standard that covers thermal cut outs is IEC60730. Thermal links are
covered by IEC60691.
Regards
Chris Colgan
EMC & Safety
TAG McLaren Audio Ltd
m
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