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
ABB’s electronic releases of PR series offer a
variety of programmable protection functions for
all mentioned circuit breaker types:
• Overload protection L
• Selective short circuit protection S
• Instantaneous short circuit protection I
• Earthfault protection G
Further options available (but not limited to):
• Zone selectivity
• Dual protection settings
• Directional short circuit protection
• Reverse power
• Under-/overvoltage protection
• Annunciation of measured values, alarms
• Maintenance data
• Integration into a plant wide process
control system
In order to satisfy other incomer requirements
there are further options:
• Load break switches
• Moulded case circuit breakers (MCCBs)
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