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June 9, 2025 BY
IN ABB

ABB MNS iS design aspects Incoming feeders and bus couplers

MNS incoming solutions are verified by testing in

accordance with IEC 61439 series, in addition to

IEC 60947-1 required for the individual apparatus,

and engineered to meet the requirements of

IEC 61641. This ensures ABB’s offering of ‘Proven

Safety Plus’ for operators and plant.

Incoming options

All ACBs have as a minimum the following

features:

• Manual charging lever and ‘charged’ indication

• Manual open/close push buttons

• Mechanical ‘open’/’closed’ indication

• Mechanical signalling of ‘overcurrent’ release

• 4 auxiliary contacts

Project specific options

• Gas sealed connections to the main busbars

(separation wall)

• 3 or 4 pole solutions

• Withdrawable/fixed configuration

• Top or bottom cable entry/bus duct

• 50% or 100% neutral

• Shunt opening/closing release

• Undervoltage release

• Electrical signalisation of ACB status

• Key locking facilities

• Shutter locking facilities

• Mechanical indication ‘racked in’/’racked

out’/’test isolated’ position

• Locking in racked in/racked out/test

isolated position

• Switch disconnector option

• ACB handling truck

• Configuration and test unit
June 9, 2025 BY
IN ABB

ABB MNS iS design aspects Module connection to distribution bars

Power contact

Connection to the distribution bars is realized

using the precision-engineered MNS power

contacts. The power contact is characterized by a

turn-able bearing, thus decoupling cable stress

and electrical contact. Consequently any cable

bending forces cannot affect the stability of the

power contact.

The mechanical stabilisation is taken over by

the supporting plate and the contact spring

where the contact fingers ensure positive

electrical contact. Contact fingers are silver

plated as standard.

The contact has been subjected to several tests in

order to prove the sophisticated design and the

high quality:

• Verification by testing acc. IEC 61439 series

• Corrosion test acc. DIN 50017 and

IEC 60068-2-60

• Crimping quality check acc. IEC 61238-1

• Vibration and shock test acc. IEC 60068-2-6

and IEC 60068-2-27

A condaptor unit facilitates the horizontal

distribution of power from the vertical

distribution bars for 6E/4 and 6E/2 modules, see

illustration on page 35. The condaptor enables

the modules to be located adjacently within the

same horizontal position of the cubicle.

Modules of size 6E and above are connected

directly to the vertical distribution bars.
June 9, 2025 BY
IN ABB

ABB MNS iS design aspects Switchboard construction

Switchboard construction

MNS iS as part of the ABB low voltage switchgear

solution uses the well proven ABB MNS standard

design aspects. MNS aspects described in this

section are fully applicable to MNS iS.

MNS system is a verified low voltage switchgear

design in accordance with IEC 61439 series and IEC 61641.

The consistent application of the modular

principle both in electrical and mechanical design

as well as the use of standardized components

allows its flexible and compact design.

Depending on operating and environmental

conditions different design levels are offered.

Notable system advantages with regard to

design aspects:

• Optimum personal protection

• Design verified by testing

• Arc fault containment acc. criteria 1-7

• High operational reliability and availability

• Earthquake-, vibration- and shock-proof

designs are available

• Maintenance-free busbar construction

• Simple retrofitting procedures

• Compact, space-saving design

• Easy project and detail engineering through

standardised components
June 9, 2025 BY
IN Meggitt

Meggitt vibro-meter VSA004 BNC patch panel with 5 populated slots

KEY FEATURES AND BENEFITS

• From the vibro-meter® product line

• Designed for operation with

VibroSmart® VSV30x + VSB300 monitoring

modules

• VSA003 cable assembly with female BNC

connectors for use with patch panels

• Flexible and durable cables with stranded

centre conductors and braided shields,

terminated with BNC connectors

• VSA004 BNC patch panel

with 10 slots

• Robust all-aluminium construction

APPLICATIONS

• Simplifies installation and wiring of a

VibroSmart® system when signal sharing of

buffered “raw” outputs via front-panel BNC

connectors is required

• Vibration and/or combustion monitoring

• Machinery protection and/or

condition monitorin
June 9, 2025 BY
IN Meggitt

Meggitt vibro-meter VMS830-2 vibration monitor

KEY FEATURES AND BENEFITS

• From the vibro-meter® product line

• Two measurement channels

(independently configurable)

• Measurement ranges:

Displacement:

 100, 200 or 500 μm PEAK

Velocity:

 10, 20 or 50 mm/s RMS

• Frequency range: 3 to 1000 Hz

• Temperature range: 0 to 50°C

• One 0 or 4 to 20 mA current loop output and

one “Raw” voltage output per channel

• Two alarms and three relays per channel

• Front-panel displays

• Robust steel housing with lockable

hinged door

• Protection rating: IP66

• Compatible with industry-standard

velocity sensors

APPLICATIONS

• Vibration measurement chains for machinery

protection and/or condition monitoring

• Vibration monitoring in accordance with

ISO 10816

• General-purpose vibration monitoring and

protection for stand-alone machines in harsh

industrial environments
June 9, 2025 BY
IN Meggitt

Meggitt VibroSmart® VSV301 + VSB300 monitoring module Different versions

Different versions of the VSV30x module

Two different versions of VibroSmart VSV30x

monitoring module are available: the VSV301 and

the VSV300.

• For the VSV301, the dynamic channel buffered

outputs are buffered (output-to-input ratio of 1:1)

and a VSA301 buffered output amplifier is only

required for signal transmission over long

distances (up to 500 m).

• For the VSV300, the dynamic channel buffered

outputs are attenuated (output-to-input ratio of

1:10) and require a VSA301 buffered output

amplifier to make the “raw” sensor signals

available at their original amplitude.

Apart from the transfer ratio (dynamic channel

buffered outputs described above) and

measurement phase accuracy (see Buffered

outputs – dynamic channels on page 9), and

maximum operating temperature

(see Environmental on page 11), the VSV301 and

VSV300 are the same, and both use the same

VSB300 terminal base
June 9, 2025 BY
IN Meggitt

Meggitt VibroSmart® VSV301 + VSB300 monitoring module Description

VibroSmart distributed monitoring system

A VibroSmart® distributed monitoring system

(DMS) is a network of small and economical

modules providing measurement,

communications or other functions that are

connected together in distributed, networked

measurement blocks in order to provide the

functionality normally offered by rack-based

machinery monitoring systems. A VibroSmart

system consists of one or more measurement

blocks, each containing up to sixteen VibroSmart

modules, a power supply and an optional host

computer running the VibroSight software.

A measurement block is a logical grouping of

VibroSmart modules that allows data such as

tachometer, trigger and alarm information to be

shared, for example, in order to monitor the same

machine. Measurement blocks are configured

using the VibroSight® software.

Note: A VibroSmart system is limited to a

maximum of sixteen VSV30x modules per

measurement block and a maximum of eight

measurement blocks without VibroSmart VSN010

real-time Ethernet switches. However, if each

measurement block contains a VSN010, then a

higher number of measurement blocks can be

achieved, limited only by overall system

performance (network traffic, VibroSight

computer configuration and so on).
June 9, 2025 BY
IN Meggitt

Meggitt VibroSmart® VSV301 + VSB300 monitoring module

KEY FEATURES AND BENEFITS

• VibroSight® compatible hardware from the

vibro-meter® product line

• 2 individually configurable dynamic input

channels with up to 19 kHz bandwidth

• 1 auxiliary input channel configurable as either

a tachometer or a DC input

• Synchronous sampling of input channels

• Up to 20 configurable processed outputs per

module

• Spectrum analyzer (FFT) up to 1600 lines

every 100 ms

• Up to 4 alarms per processed output, with

hysteresis and time delay

• AND, OR and majority voting logic functions for

the combination of alarm and status

information

• VibroSmart® security (module lock)

• Redundant communications and redundant

power supply inputs to improve availability

• Analog outputs: 2 local outputs configurable

as 4-20 mA or ±5 V

• Discrete outputs: 2 local relays

• Real-time Ethernet communications

• Live insertion and removal of modules (hotswappable)

with automatic reconfiguration

• Fully software configurable

• Robust enclosures with DIN rail mounting

APPLICATIONS

• Vibration and/or combustion monitoring

• Machinery protection and/or

condition monitoring

• Conforms to IEC 61850-3 requirements for

power plant and utility applications
June 9, 2025 BY
IN Meggitt

Meggitt VibroSmart® VSV301 + VSB300 monitoring module Different versions

Different versions of the VSV30x module

Two different versions of VibroSmart VSV30x

monitoring module are available: the VSV301 and

the VSV300.

• For the VSV301, the dynamic channel buffered

outputs are buffered (output-to-input ratio of 1:1)

and a VSA301 buffered output amplifier is only

required for signal transmission over long

distances (up to 500 m).

• For the VSV300, the dynamic channel buffered

outputs are attenuated (output-to-input ratio of

1:10) and require a VSA301 buffered output

amplifier to make the “raw” sensor signals

available at their original amplitude.

Apart from the transfer ratio (dynamic channel

buffered outputs described above) and

measurement phase accuracy (see Buffered

outputs – dynamic channels on page 9), and

maximum operating temperature

(see Environmental on page 11), the VSV301 and

VSV300 are the same, and both use the same

VSB300 terminal base
June 9, 2025 BY
IN Meggitt

Meggitt VibroSmart® VSV301 + VSB300 monitoring module

KEY FEATURES AND BENEFITS

• VibroSight® compatible hardware from the

vibro-meter® product line

• 2 individually configurable dynamic input

channels with up to 19 kHz bandwidth

• 1 auxiliary input channel configurable as either

a tachometer or a DC input

• Synchronous sampling of input channels

• Up to 20 configurable processed outputs per

module

• Spectrum analyzer (FFT) up to 1600 lines

every 100 ms

• Up to 4 alarms per processed output, with

hysteresis and time delay

• AND, OR and majority voting logic functions for

the combination of alarm and status

information

• VibroSmart® security (module lock)

• Redundant communications and redundant

power supply inputs to improve availability

• Analog outputs: 2 local outputs configurable

as 4-20 mA or ±5 V

• Discrete outputs: 2 local relays

• Real-time Ethernet communications

• Live insertion and removal of modules (hotswappable)

with automatic reconfiguration

• Fully software configurable

• Robust enclosures with DIN rail mounting

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