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)