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WL Circuit Breaker Selection and Application Guide
Ground fault module
The ground fault module (GFM) is used to detect current
flowing through the grounding conductors which may present
a hazardous condition. The module can be field installed but
can’t be removed once installed. Residual sensing by phase
vector summation or direct sensing can be selected on the
module or via the setup of the ETU776. Ground fault modules
may be ordered as alarm only or as alarm and trip. Alarm will
provide a visual and communication notification. Alarm and
trip model will trip the breaker in addition to alarm notification.
Key lock-out
To lock the WL breaker in the “Open” position, an optional keylock
can be installed in the breaker. The key cylinder and lock-out
assembly are mounted in the breaker and accessible through a
knockout in the breaker front cover. The key is removable only
when the breaker is locked open. If a custom, coordinated
key/cylinder is required, order the lock provision-only. The lock
cylinder and matched key must then be ordered separately from
the respective lock manufacturer.
The compatible Kirk cylinder lock part number is C-900-301.
The compatible Superior cylinder lock part number is C-900.
Operation counter
For monitoring the number of breaker operations (open and
close) a numerical operations counter is available. This counter
is only suitable for breakers equipped with the spring-charging
motor option. The counter mounts to the motor assembly and
will register manual and electrical breaker operations. Counter
is non-resettable up to 100,000 operations. Counter ships with
available pre-service operations for field setting to zero.
1
See page 85 for field install part numbers.
WL Circuit Breaker
Factory Installed Options
1
Auxiliary contacts
Auxiliary contacts can be used to provide interlocking control
or remote indication of the breakers main contact position (open
or closed breaker). The Normally Open (NO) contacts are open
when the breakers main contacts are open. The Normally Closed
(NC) contacts are closed when the breakers main contacts are
open. The contacts are wired individually to the secondary
disconnects for user connectivity. See breaker wiring diagram
for supply terminal locations.
Breaker status sensor (BSS)
BSS is an integrated circuit device that measures the internal
breaker temperature, monitors breaker main contact position
(open or closed), bell alarm status, shunt trip status, breaker
ready-to-close and closing spring charged status. All status
conditions and information is transmitted through the
CubicleBus network as real-time data. A COM16 (Modbus),
COM15 (PROFIBUS) or a BDA (breaker display adapter) accessory
can be used to export the BSS CubicleBus data to external computer
or monitoring equipment. See breaker wiring diagram for supply
terminal locations. Included with COM15 and COM16.
Characteristics table
Available Contact Configurations
2NO and 2NC or 4NO and 4NC
AC Operation
Voltage
240VAC 50/60Hz
Continuous
Current
10A
Making
Current
30A
Breaking
Current
3A
DC Operation
Voltage
24, 125, 250VDC
Continuous
Current
5A
Making Current
1.1A @ 24 or 125VDC, .55A @250VDC
Breaking Current
1.1A @ 24 or 125VDC, .55A @250VDC
Characteristics table
Operating Voltage
24VDC
Peak Inrush Current
110mA
Max. Continuous Current
40mA
Ambient Operation Temperature
-25 to 70ºC
Breaker mounted options
Содержание ETU745
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