Description
28 9229 0025 176 0E
2021-11-15
A further shunt release, transformer-operated release or undervoltage release can
be installed as a 2nd release.
2nd shunt release (-Y2)
The 2nd shunt release (-Y2) is installed whenever more than one shunt release is
needed.
Shunt releases DC 60 V / AC 100 V are protected against overvoltage by a var-
istor.
2nd Shunt release (Fig. 30)
Power consumption 300 W bis 370 W / VA (3AY1410-..)
In the case of the 2nd shunt release (-Y2), the electrically fed tripping pulse is
passed to the “OPEN” latch by means of a directly acting magnet armature, thus
switching off the vacuum circuit-breaker.
The 2nd shunt release (-Y2) is not designed for continuous operation and is termi-
nated within the circuit-breaker via the auxiliary switch (-S1) at the factory.
The operator’s supply voltage may deviate from the rated supply voltage of the vac-
uum circuit-breaker by -30 % to +10 % in the event of DC voltage and by -15 % to
+10 % in the event of AC voltage.
2nd shunt release (Fig. 31)
Power consumption 50-70 W / VA (3AX1101-..)
In the case of the 2nd shunt release (-Y2), the electrically fed tripping pulse is
passed to the “OPEN” latch by means of a magnet armature by release of an energy
storage mechanism, thus switching off the vacuum circuit-breaker.
This opening solenoid is not designed for continuous operation.
Fig. 30 2nd shunt release 3AY1410-..
Order via the 9th digit
• for generator circuit-breaker SION
®
: MLFB = B
• for all other vakuum circuit-breaker SION
®
:
MLFB = B with addition G39
Fig. 31 2nd shunt release 3AX1101-..
Order via the 9th digit for all other combinations
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