16
M N S - MCC
LO W VO LTAG E M OTO R CO N T R O L C EN T ER
The MNS-MCC's Arc resistant offer is distinguished
because it has a few extra features that are
intended to provide an additional degree of
protection to the personnel performing normal
operating duties in close proximity to the
equipment while the equipment is operating
under normal conditions.
The roof plate for the arc resistant MNS MCC has
flaps that helps to eliminate the pressure build up
inside the units during the event of an electric arc
failure.
For modular sections the roof plate has the flaps
directly over the side of the bucket compartments,
this compromises a reduction of the cable entry so
now only is available the space over the vertical
wire way for the entry.
The withdrawable modules for the arc resistant
offer have some changes in order to comply with
the arc resistant characteristics, these have the
lateral window for released the pressure build up
into the units, the reinforcement for the door lock
and the arc housing cover to cover the contact
holder to avoid any possible arc from the
contacts to the inside of the module.
From the unique withdrawable unit concept, to the
patented vertical bus system, ABB MNS-MCC offers
a wide array of features which provides the
operator with a higher level of safety than that of
traditional low voltage motor control centers.
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15
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16
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15 Arc-resistant
roof plate
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16 Arc-resistant
withdrawable module
Flaps
Top
cable
entry
Arc Housing
Cover
Reinforcement
for door lock
Lateral
Window
