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WL Circuit Breaker
Advantages through communication
Modern circuit breakers with
integrated communications
open up new opportunities to
simplify commissioning, plant
startup, remote configuration,
diagnostics, testing,
maintenance and power
management.
This results in a range of
savings and productivity
improvements in industrial
plants, buildings and
infrastructure projects. The
following describes the main
advantages.
Start-up and Configuration
• Minimize plant downtimes
for necessary expansions.
• Simple start-up test
• Simplified commissioning
and start-up with good
documentation options
• Fast and reliable local
configuration via PROFIBUS,
MODBUS or the
Ethernet/Intranet/Internet
with intelligent configuration
software (see picture, top
right)
• Communication enables faster
and more reliable connection
than conventional point-to-
point wiring
Operator Control and
Monitoring
• Increased transparency in
power distribution through
transmission of breaker status
information, alarm signals and
setpoints (e.g. overcurrent,
overvoltage, phase unbalance
–see picture, right)
• Fault management enables a
fast response to critical events.
With additional components,
key messages (e.g. trip signals
and diagnostics) can be
transmitted by SMS* to the
cell phone of plant personnel
• Option for the central readout
of parameters and their
automatic transmission to
interchangeable circuit
breakers minimizes fault
liability and shortens
downtimes
• Effective diagnostics
management, by
determination of the precise
cause of a fault and recording
of the phase current.
• Remote control of the circuit
breaker enables both the
manual and automatic
switching on and off of plant
equipment
*Short Message Service (SMS) is the transmission of
short text messages to and from a mobile phone,
fax machine, and/or IP address.
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WL Communication-capable Circuit Breaker
Power Management
• Balancing demand peaks and
valleys helps minimize energy
costs. Remote breaker control
enables efficient power
management and demand-
based load curtailment.
• Analysis of the archived
power values (trending)
enables creation of a power
consumption profile. This can
be the basis for future power
procurement (see picture on
the bottom right)
• The quality of the delivered
power (power factor,
harmonics, voltage
disturbances) can be logged
and documented.
This enables effective power
quality management.
• Cost allocation makes power
consumption more transparent
for commercial analysis.
Energy costs can be clearly
assigned and optimized.
• Information on plant capacity
utilization and network quality
serve as the basis for sensible
plant expansions.
• Power costs can be divided
among cost centers, which
permits more accurate
allocation of costs to individual
production sectors
Maintenance and Service
• Standard and optional features
provide information for
maintenance (e.g. number of
breaker operations, operating
hours, contact erosion
estimations) enables
timely and calculated planning
of necessary maintenance.
When used in conjunction with
a preventative maintenance
program, reduces the risk of
costly plant failures and
permanent damage to
sensitive plant equipment
• The central control of
maintenance work and the
ability to SMS* key information
has the capability to
significantly reduce
maintenance and service costs.
You can now communicate
important fault
and maintenance
information to the
cell phones of
plant personnel
using optional
components and
a PLC or computer.
Simple startup and configuration of circuit breaker with
web browser-based configuration software
Integration of the circuit-breaker in operator control and monitoring
system produces transparency in power distribution
Circuit breakers with communication capability deliver data for
a wide range of power management applications
WL Selection and Application Guide • 2005
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