MM4 series moulded case circuit breakers
MM4 series moulded case circuit breakers main technical performance
can reach end of nineties international same class products level.
Compact construction, small volume, high short breaking capacity,
no arc, high suit environment capacity and flexible installation
etc features. MM4 intelligent moulded circuit breaker, adopt micro
processor technology, avoid the faulty which traditional circuit
breaker use bimetallic strip and influenced by environment
temperature. As the execute institution of delay release, it
suitable for cold area as well as tropic area to use.
Traditional circuit breaker instantaneous release acted by
instantaneous release institution electromagnetic attraction. As
the existence of gravity, it limits the installation direction.
MM4 intelligent moulded circuit breaker, adopte electric release
instead of traditional attracting sheet, so its installation
direction is facultative.
MM4 intelligent moulded circuit breaker, because its internal has
MPU, high sensitive, high release reliability,
It can derive special function products for special place: such as
under voltage protection, faulty phase protection, three phase
disequilibrium, delay time adjustable, overload display and
communication etc functions.
MM4intelligent MCCB have indication of overloading and system
MM4intelligent MCCB have three-stage protection, which can be used in
MM4intelligent MCCB, the rated current initialization can be adjusted
neatly and exactly. At the same time its short delay action
multiple can be adjust. Sum up, these points take a lot convenient
to technicians and consumers.
MM4intelligent moulded case circuit breakers do not adopt the bimetal,
which depend on heating to release. Breakers themselves reduce the
MM4Intelligent Type MCCB is suitable for using in the circuit of AC
50Hz(or 60Hz, please make remarks when ordering), rated insulating
voltage 750V, rated working voltage below 690V, and rated current
is 16A to 630A for distributing electric energy, and infrequently
OFF/ON under normal condition.
The intelligent MCCB, which the rated frame rank current is 800A
and below, also can be used for infrequently switching and starting
of squirrel cage motor and for protecting motor from over-load,
short circuit and under-voltage.