Circuit diagrams
3VL molded-case circuit breakers
326 System Manual, 03/2009, 110 0110 - 02 DS 01
//
)
6
)
)
'
'
1//
"S contat" integrated
into shunt release
//
)
6
6
)
)
&
&
1//
Undervoltage release and shunt release for VL160X to VL1600
OFF delay
N
L3
L1
L2
400 V AC
3TX4
-S03
21
Z1
S02
21
22
X1
22
Y1Y2
D1
D2
4
3
3VL
2
1
6
5
X2
S01
K1
S01 Delayed release
S02 Instantaneous release for EMERGENCY-OFF loop (if required)
S03 Leading auxiliary contact, e.g. 3VL9300-3AS10 "OFF to ON" in the front rotary operating
mechanism of the circuit breaker (if required)
K1 Auxiliary contactor 3RH11 (if required)
Figure 14-10 Delay unit (3TX4701-0A) for undervoltage release for VL160X to VL1600
Protective circuit with UVR
(220 V to 250 V DC)
Tripping time UVR
Y2 only 3 seconds
Y2 and Y1 bridged 6 seconds
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