
3RV1 circuit breakers
SIRIUS System Manual
2-18
GWA 4NEB 430 0999-02b
2.4 Accessories
2.4.1 Attachable accessories: Overview
Auxiliary switches, alarm switches, auxiliary releases and other accessories
can be easily attached to the circuit breakers without tools, as required.
Accessories
Function/use
Width
Attach to
Transverse auxi-
liary switch
The contacts of the auxiliary switches close and open together with
the main contacts of the circuit breaker. Variants:
•
1 changeover contact
•
1 NO + 1 NC contact
•
2 NO contacts
Width of
the cir-
cuit
breaker
remains
the same
Front
Electronically
optimized trans-
verse auxiliary
switch
One transverse auxiliary switch can be attached for each circuit
breaker:
Variants:
•
1 changeover contact
Lateral
auxiliary switch
One lateral auxiliary switch can be attached for each circuit breaker:
•
1 NO + 1 NC contact
•
2 NO contacts
•
2 NC contacts
•
2 NO + 2 NC contacts
9 mm
18 mm
Left side
Alarm switch
Frame sizes
S0, S2 and S3
One alarm switch can be attached at the side of the circuit breakers
with rotary switches.
The alarm switch has two contact systems:
•
One contact system (1 NO + 1 NC) reports a general
tripping operation
, irrespective of whether it was caused by a
short circuit, overload or auxiliary release.
•
The other contact system (1 NO + 1 NC) only switches in
the event of a
short circuit
tripping operation.
To reclose the circuit breaker after a short circuit, the alarm switch
must be reset manually after the cause of the error has been elimi-
nated.
18 mm
Shunt
release
Remote release of the circuit breaker:
•
Via PLC: The coil of the release should be connected to
the voltage only briefly
•
Especially suitable for emergency stop disconnection by
means of appropriate emergency stop switches in acc. with
DIN VDE 0113
18 mm
Right side
Accessories
cannot be
attached on
the right of a
circuit
breaker with
a relay func-
tion.
Undervoltage
release
Trips the circuit breaker in the event of a voltage interruption (e.g.
when the power plug is removed) and prevents the motor starting up
inadvertently when the voltage returns.
Undervoltage
release with lea-
ding
auxiliary con-
tacts
2 NO
Function and use, see undervoltage release.
Additional function:
The auxiliary contacts isolate the undervoltage release from the
power system on both sides in the event of breaking or a tripping
operation and thus prevent voltage distortion to the control circuit
when the switch is in the off position.
It is possible to reclose the circuit breaker because the contacts
reclose.
Содержание SIRIUS
Страница 1: ...System Manual 1 Edition sirius ...