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6LE007596Ad
Drawout circuit breakers
3.4 Description of the chassis terminal blocks
Terminal
blocks
Description
Integrated or additional
FS
Fault trip contact
General tripping information.
It should be noted that this terminal block does not send information if the circuit breaker is opened
manually using the push-button.
Integrated
RTC/FS2
RTC ready to close contact or Fault trip contact No. 2 FS2
These terminal blocks can be connected either to use an RTC ready to close contact or a 2nd FS2
Fault trip contact.
Additional
UV/SH2
These terminal blocks can be connected either to use a UV undervoltage release coil or an SH shunt
trip coil.
Additional
SH/UV2
These terminal blocks can be connected either to use an SH shunt trip coil or a 2nd UV undervoltage
release coil.
Additional
MO
Power supply of the MO charging motor. The connection terminals M1 and M2 power the drive
mechanism of the MO motor. The M4 terminal is used to connect the SC "spring-charged" signalling
contact.
Note that the M4 terminal is at the same potential as the power supply of the drive mechanism.
Additional
CC
Connection of a closing coil CC
Additional
AX1/vN
Auxiliary contact No. 1 - Signals the open/closed status of the circuit breaker / vN connection to the
neutral potential
Integrated
AX2
Auxiliary contact No. 2 - Signals the circuit breaker open/closed status
Integrated
AX3
Auxiliary contact No. 3 - Signals the circuit breaker open/closed status
Integrated
AX4
Auxiliary contact No. 4 - Signals the circuit breaker open/closed status
Integrated
Terminal
blocks
Description
Integrated or additional
D1 and D2 Contacts indicating the (Disconnected) position of the circuit breaker in the chassis
Additional
T1
Contact indicating the test position (Test) of the circuit breaker in the chassis
C1 and C2 Contacts indicating the Connected position of the circuit breaker in the chassis
ATTENTION
Terminal block vN
In the case of a 3-pole circuit breaker equipped with a sentinel Energy trip unit and installed in a earth fault protection
system where the neutral is distributed, the vN terminal must be connected to the neutral potential.
This connection is essential to obtain correct measurement of phase-neutral voltages V1N, V2N, V3N, powers per phase
and for operation of the advanced protections against active power feedback and undervoltage or overvoltage.
The three-pole circuit breaker equipped with the sentinel Energy trip unit is delivered without the AX1 contact. Terminals 11
and 14 are inoperative.