Accessory Devices And Connections; Overview Of Magnum Accessories; Plug-In Electrical Accessories - Eaton Magnum SB Series Technical Product Manual

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
•
8
1

Plug-in electrical accessories

1
There are several Magnum plug-in electrical accessories .
Three types (ST, SR, UVR) can be viewed for identification by
1 name and rating through viewing windows located in the right
front of the breaker .
1
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
1 . Shunt Trip (ST) (Through the window)
2 . Spring Release (SR) (Through the window)
1
3 . Undervoltage Release (UVR) (Through the window)
4 . Auxiliary Switch
1
5 . Latch Check Switch
1
Accessory viewing windows
1
1
1
1
1
1
1
Through-the window electrical accessories
1
Shunt Trip (ST)
•
The shunt trip is an optional device on circuit breakers .
1
It opens the circuit breaker instantaneously when its coil is
energized by a voltage input . A total of two shunt trips can be
1 mounted on a Magnum breaker . Two different shunt trip types
are available:
1 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 .
1
The shunt trip type that has a cutoff switch removes voltage
•
from the coil once the breaker contacts are opened .
N otee: Do not use a shunt trip monitoring circuit with a continuous duty
shunt trip.
52
MaGnuM PRoDuct GuiDe CA013002EN—April 2017
Courtesy of NationalSwitchgear.com
Table 13 . Shunt trip ratings
operational
control voltage range
voltages 70–110%
24 Vdc 17–26 Vdc
48 Vdc 34–53 Vdc
60 Vdc 42–66 Vdc
110–125 Vdc 77–138 Vdc
220–250 Vdc 154–275 Vdc
110–127 Vac 77–140 Vac
1
208–240 Vac 146–264 Vac
Required for less than 35 ms .
Table 14 . Continuous duty shunt trip
operational
control voltage range
voltages 70–110%
24 Vdc 17–26
48 Vdc 34–53
60 Vdc 42–66
110–125 Vdc 77–138
220–250 Vdc 154–275
110–127 Vac 77–140
208–240 Vac 146–264
Shunt trip with cutoff switch
Shunt trip switch installed
www.eaton.com
1
inrush power opening
consumption time (ms)
250 W 35
250 W 35
300 W 35
450 W 35
450 W 35
450 VA 35
450 VA 35
inrush/
continuous
power opening
consumption time
250 W/18 W 35
275 W/18 W 35
275 W/18 W 35
450 W/10 W 35
450 W/10 W 35
450 VA/10 VA 35
400 VA/10 VA 35