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What is the difference between Isolator & Load Break Switch?
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Answer Posted / dhruv vipul
An isolator switch is part of an electrical circuit and is
most often found in industrial applications, however they
are commonly fitted to domestic extractor fans when used in
bathrooms in the UK. Isolator switches may be fitted with
the ability for the switch to padlock such that inadvertent
operation is not possible (see: Lock and tag). In some
designs the isolator switch has the additional ability to
earth the isolated circuit thereby providing additional
safety. Such an arrangement would apply to circuits which
inter-connect power distribution systems where both end of
the circuit need to be isolated.
Major difference between isolator and circuit breaker is
that isolator is an off-load device, whereas circuit
breaker is an on-load device.
Standards in some countries for safety may require either
local motor isolators or lockable overloads (which can be
padlocked).
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