3-6.8 Voltage Taps; Secondary Contacts And Connection Diagrams - Eaton MDN-408 Instructions For Installation, Operation And Maintenance

3-6.8 VOLTAGE TAPS

On circuit breakers with Digitrip 1150 trip units potential
taps are required to monitor the three phase voltages.
Voltage taps may be placed on either the line (top) or
load (bottom) terminals of the breaker at the factory.
Figure 3-21 illustrates line-side voltage taps.
3-7 SECONDARY CONTACTS AND CONNECTION
DIAGRAMS
A maximum of sixty secondary wiring connection points
are available on the standard frame circuit breaker (48
on narrow frame), each dedicated to a specific function
Figure 3-21 Line-Side Voltage Tap for 1150 Trip Unit
Secondary Connector Labels
Figure 3-22 Top View Secondary Connectors
I.B. 2C12060H08
(Figure 3-22). The wiring points are finger safe with
no more than two wires per terminal.
Up to two secondary contact plug-in connectors (AMP),
each with 30 secondary points, are mounted on the top
rear portion of the circuit breaker . The plug-in connec-
tors are protected by a molded hood (Figure 3-23).
How many connectors are mounted depends upon a
number of considerations, such as whether the circuit
breaker is electrically or manually operated and how
many features are required. When the front cover of the
circuit breaker is removed, the top of each plug-in con-
nector is exposed. A label on each connector identifies
the wiring points.
Figure 3-23 Secondary Connector Protective Hood
For more information visit: www.EatonElectrical.com
Effective: May 2006
Protective Hood
Labels Legend
OTS
UVR
ATR
INCOM
A BUS
A/S
NEUTRAL
GF SGND
ZONE
ST
SR
MOTOR
LCS
Instruction Book
Page 23
Overcurrent Trip Switch
Undervoltage Release
Automatic Trip Relay
(520M and 1150 Trip
Units Only)
PowerNet
Communications Network
(Future Use)
Auxiliary Contacts
Neutral Sensor Input
Source Ground Input
Zone Interlocking
Shunt Trip
Spring Release
Charging Motor
Latch Check Switch