4-9
a. Auxiliary contact block - AUX :
Function: To reflect breaker ON/OFF state in the contro
l circuit.
Features: Auxiliary contact block is a combination of 4 units of
1NO+1NC each.
Tools required: None
Installation: Auxiliary Contact block is located on the top plate. Slots 1-
3 and 5 are to be used for mounting 4 auxiliary contact blocks. 4th slot
is designated for routing control wires and 6th slot carried additional
auxiliary contact for shunt release circuit.
Click-fit the Auxiliary contact assembly in the specific slots on Top plate
as shown.
While making connections, refer wiring diagrams on pages 3-38 to 3-
44 in this manual. Use NO/NC contact numbers as specified in the
wiring diagram and NOT on the auxiliary contact units.
Function: To trip the breaker from a remote location
Features: Available with the following control voltages,
Refer section 7.2 for ordering information of Shunt release.
U-POWER Om
ega’s Shunt Release (SR) has the widest band of
operation from 10% to 130%. This allows tripping of breaker, even in
case of a substantial dip in control supply voltage.
Tools required: None
Installation: Drop fit the Shunt release in the assigned slot and slide
backwards to lock. Also, fix the pre-wired Auxiliary Contact Block.
b. Shunt Release - SR :
Rated insulation voltage U: 400 V AC/DC
i
Rated operational voltage U : 400 V AC/DC
e
Switching capacity:
AC Uupto 24V 110V 220/230V 400V
e
50/60 Hz. I (AC-12) 10A 10A 10A 10A
n
I (AC-15) 6A 6A 6A 4A
n
DC U24V 48V 110V 220V
e
I (DC-12) 10A 8A 3.5A 1A
n
I (DC-13) 10A 4A 1.2A 0.4A
n
Refer section 7.2 for Ordering information of Auxiliary Contacts
110, 220, 240, 415 Vac 50/60Hz
24, 30, 48, 60, 110,
125/127, 220, 250 Vdc
70-110%
200 VA
0.5s
Normal Voltage
Operating
Limit
Short-time Power
Consumption
Type
SR
Closing
Release (5)
Several Breaker-mounted accessories are located on the
front top side of the breaker and have specific positions.
Auxiliary Contact
Block (3a)
Undervoltage
release
controller (4c)
Undervoltage
Release (4)
Shunt
Release (6)
Operation
Counter (10)
6
2
3
4
5
1
Undervoltage
Trip Indication
Common Fault
Indication
Shunt Trip
Indication
C1
C2
TCS
To Next Page
Loading...