3 250 0.
Reference figure the electrical circuit diagrams: S75I (31-32) S75T (31-32) S75E (31-32)
c llin rin loaded
This consists microswitch which allows remote signalling the state the circuit-breaker operating mechanism closing springs.3
250 0.
Reference figure the electrical circuit diagrams: S51 (13).aux YU)
The undervoltage releases can fitted with contact (by choise, normally closed open) for signalling undervoltage energized for remote
signalling the state the undervoltage release. reset the circuit-breaker, necessary reset the mechanical indicator
pushbutton.
Reference Fig.
26/158
.
Un max max ç
125 0.
The basic configuration described above can modified the user indicate normally open normally closed repositioning the faston
connector the microswitch.15 ms
The versions available are:
a) Electrical signalling for circuit-breaker open/closed
It possible have electrical signalling the circuit-breaker status (open/closed) auxiliary contacts. With this accessory, you can reset the mechanical indicator with electronic
relay using remote control and this enables the circuit-breaker reset.
c) Coil for resetting the echanical release trip indicator
This enables visual signalling the operating mechanism (mechanical) and remotely (electrically means changeover switch) the circuit-
breaker being opened following trip the overcurrent releases.
Only available for circuit-breakers withdrawable versions for installing the fixed part. special version the auxiliary
contacts also available (gold plated contacts) for rated voltage under (digital signal).
Reference figure the electrical circuit diagrams: S33 M/2 (11)
d) ontact for signalling undervoltage release energized (C.
Reference figure the electrical circuit diagrams: UI/N
Model 2234 Apparatus Scale
L 2778
Doc-No- 1SDH000460R0002
Page No.llin s
The following signals are available following tripping the overcurrent release:
a) echanical trip signalling for overcurrent releases
This enables visual signalling the operating mechanism pushing the trip pushbutton when the circuit-breaker has been opened following
tripping overcurrent release.
The auxiliary contacts can have the following configurations:
- break/make contacts for PR121 normally open normally closed)
- break/make contacts for PR122/ PR123 normally open normally closed for the release)
- break/make contacts for PR121 normally open normally closed);
- break/make contacts for PR122/ PR123 normally open normally closed for the release)
- supplementary break/make contacts which can mounted outside the circuit-breaker. The contact
is always supplied with the spring loading geared motor.
The auxiliary contacts can have the following configurations:
- contacts; group consisting connected signalling contacts, disconnected signalling contacts and test position signalling contact (main
contacts isolated, but sliding contacts connected)
- contacts; group consisting connected signalling contacts, disconnected signalling contacts and test position signalling contacts (main
contacts isolated, but sliding contacts connected). the electrical circuit diagrams: /1^10 (21-22)
b) Electrical signalling for circuit-breaker connected/test isolated/disconnected
In addition mechanical signalling the position the circuit-breaker, possible have electrical signalling means auxiliary
contacts which are installed the fixed part. When contacts for PR122/ PR123 are required, zone selectivity and the PR120/K module are not available.
Power supply: 24-30 AC/DC
220-240 AC/DC__________
_____________________________________110-130 AC/DC__________
Reference figure the electrical circuit diagrams: S51 (14)
A ilia ts
Auxiliary contacts installed the circuit-breaker are available enable indication the circuit-breaker's status. is
supplied request. The circuit-breaker can only closed again putting the pushbutton back into its normal position included in
the standard configuration.
Reference figure the electrical circuit diagrams: (12)
T tio rs
a) Current sensor for the neutral conductor outside the circuit-breaker
The sensor allows neutral protection means connection the overcurrent release and available only for three-pole circuit-breakers.
b) lectrical and echanical trip signalling for overcurrent releases
This enables visual signalling the operating mechanism (mechanical) and remotely (electrically means changeover switch) the circuit-
breaker being opened following trip the overcurrent releases.
Reference figure the electrical circuit diagrams: S51 (13)
