ABB Vmax - Page 48

46
Caption
= Reference number of diagram figure.
* = See note indicated by the letter.
-QB = Circuit-breaker accessories.
-BM = Device for the supervision of shunt opening release
and shunt closing release coil continuity (see note D).
-MS = Motor for the closing springs charging (see note C).
-BB1..2-3 = Circuit-breaker auxiliary contacts.
-BS1 = Limit switches of the spring-charging motor.
-BS2 = Limit switches signalling closing spring charged or
discharged.
-BD = Position contact of the enclosure door.
-BT1 = Contacts signalling circuit-breaker in the
connected position (see note E).
-BT2 = Contacts signalling circuit-breaker in the removed
position (see note E).
-BT3 = Circuit-breaker position contact. It is open during
the travel of the breaker (see note H).
-SC = Pushbutton or contact for the circuit-breaker
closing.
-SO = Pushbutton or contact for the circuit-breaker
opening.
-XB = Connector for the circuit-breaker circuits.
-XB2..9 = Connectors of accessories.
-XB1 = Switchboard terminal board (mounted externally to
the circuit-breaker).
-RL1 = Locking magnet. If de-energized it prevents the
circuit-breaker closing mechanically ( it is possible
to limit it consumption by connecting in series a
delaying pushbutton enabling the operation).
-RL2 = Locking magnet. If de-energized it prevents
the circuit-breaker racking-in and racking-out
mechanically (it is possible to limit its consumption
by connecting in series a delaying pushbutton
enabling the operation).
-MC = Shunt closing release (see note D).
-MO1 = First shunt opening release (see note D).
-MO2 = Second shunt opening release (see note D)
-MO3 = Opening solenoid for release external to the circuit-
breaker.
-MU = Undervoltage release (see note B).