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MaGnuM PRoDuct GuiDe
CA013002EN—April 2017 www.eaton.com
52
Accessory devices and connections
Overview of Magnum accessories
A variety of accessory devices are available for use with
Magnum circuit breakers . Unless otherwise stated, they are
all considered optional devices in the sense that they are not
provided as standard on a manually operated circuit breaker .
Available accessories are identified here and discussed in
general terms . For more detailed information and/or installation
instructions, refer to the individual instruction leaflets available
on
www .eaton .com/magnum
.
Magnum circuit breaker accessories are designed to fit all frame
sizes . The accessories fall into one of three categories:
•
Plug-in Electrical
•
Internal Electrical
•
Mechanical P
Plug-in electrical accessories
There are several Magnum plug-in electrical accessories .
Three types (ST, SR, UVR) can be viewed for identification by
name and rating through viewing windows located in the right
front of the breaker .
All of these below are plug-in type and can be factory installed or
field installed using a UL Listed kit . The plug-in accessories are:
1 . Shunt Trip (ST) (Through the window)
2 . Spring Release (SR) (Through the window)
3 . Undervoltage Release (UVR) (Through the window)
4 . Auxiliary Switch
5 . Latch Check Switch
Accessory viewing windows
Through-the window electrical accessories
•
Shunt Trip (ST)
The shunt trip is an optional device on circuit breakers .
It opens the circuit breaker instantaneously when its coil is
energized by a voltage input . A total of two shunt trips can be
mounted on a Magnum breaker . Two different shunt trip types
are available:
•
The continuous duty coil (or 100% rated) type can be
continuously energized . It is useful in applications where it is
desired to keep the breaker tripped open .
•
The shunt trip type that has a cutoff switch removes voltage
from the coil once the breaker contacts are opened .
otee:
N
Do not use a shunt trip monitoring circuit with a continuous duty
shunt trip
.
Table 13 . Shunt trip ratings
control
voltages
operational
voltage range
70–110%
inrush power
consumption
opening
time (ms)
24 Vdc
17–26 Vdc
250 W
35
48 Vdc
34–53 Vdc
250 W
35
60 Vdc
42–66 Vdc
300 W
35
110–125 Vdc
77–138 Vdc
450 W
35
220–250 Vdc
154–275 Vdc
450 W
35
110–127 Vac
77–140 Vac
450 VA
35
208–240 Vac
146–264 Vac
450 VA
35
Required for less than 35 ms .
Table 14 . Continuous duty shunt trip
control
voltages
operational
voltage range
70–110%
inrush/
continuous
power
consumption
opening
time
24 Vdc
17–26
250 W/18 W
35
48 Vdc
34–53
275 W/18 W
35
60 Vdc
42–66
275 W/18 W
35
110–125 Vdc
77–138
450 W/10 W
35
220–250 Vdc
154–275
450 W/10 W
35
110–127 Vac
77–140
450 VA/10 VA
35
208–240 Vac
146–264
400 VA/10 VA
35
Shunt trip with cutoff switch
Shunt trip switch installed
1
1
