As a standard, power cabling and control wiring

are strictly separated within MNS iS. The

switchboard is structured as follows:

1 Equipment compartment

All equipment, including the standard motor

starter modules (MStart) in withdrawable

design, is situated therein. The compartment

can be divided in horizontal and vertical

sub-compartments.

2 Control cable compartment

Contains the motor control devices

(MControl), control cables and terminals.

3 Power cable compartment

Contains power cables and connection units.

4 Busbar compartment

Contains the MNS main busbar system and

distribution bars. The distribution bars are

embedded in the multifunction separation

wall (MFW) which is located between the

equipment compartment and the busbar

compartment.

System highlights

• Functional areas are separated from each other

in accordance with IEC 61439 series.

• Power cables are fully separated from the control

and communication cables, thus avoiding

electromagnetic interferences.

• Different access rights to cable compartments

can be granted using different key locks.

The basic elements of the MNS iS frame

construction are “C” shaped steel profiles with

a 25 mm hole pitch according to DIN 43660.

This 25 mm equals the dimension of 1E used

in MNS to define the area usage within

the switchgear.

Each cubicle is precision constructed by bolting

horizontal and vertical profiles together, to form

a rigid modular structure. The assembly is

maintenance free as a result of the construction

method utilizing a combination of thread locking

ESLOK screws with bolted pressure plates and

thread forming screws.

The profiles are galvanic protected (Zn or AL/Zn)

against corrosion.