Features And Benefits - Siemens WL Series Selection And Application Manuallines

Low Voltage Circuit Breaker
Introduction
Businesses are becoming increasingly more intelligent about
the way they consume energy. Industrial and Commercial energy
consumers are continuously looking for practical and efficient
methods of measuring their energy usage while simultaneously
ensuring any possible downtime is minimized. At Siemens we
understand those needs and we have developed products and
solutions to help energy consumers achieve their goals.
One of our solutions begins with our world-class WL Circuit
Breakers. The WL line-up of breakers developed by Siemens
combines decades of patented circuit breaker protection
experience with the latest technology in circuit breaker
performance and communication.
A good example of our innovative technology is, Dynamic
Arc-Flash Sentry® (DAS). DAS is an option that allows users
the ability to automatically lower the down-stream available
fault current when facility personnel are nearby the electrical
equipment. Helping our customers provide a safer work-place
environment is an important part to our overall solutions.
Other valuable aspects that complement our solutions are the
WL circuit breaker's ability to gather energy and environmental
data and send it to a central or remote monitoring network
system. You'll find these capabilities and more when you take
a closer look at WL circuit breakers features within this guide.
WL Circuit Breaker Features and Benefits
• 3 frame sizes: Three frame sizes that cover a wide range of
continuous current ratings allow for flexible exchange of
breakers to other compartments and reducing the footprint
of the breaker enclosures
• Ready-to-close indication: Built-in check points of the
breakers mechanical operator provide an additional layer of
safety and external controls by inhibiting the breaker from
closing until certain conditions are satisfied
• 100% rating: All model breakers are designed for continuous
operation at their maximum current ratings without de-rating
the frame or use of forced air
• High-efficiency: Low loss of energy flowing through the
breaker reduces the operating costs
• Bi-directional feed: Top or bottom supply feed without any
hardware configuration changes.
• Rogowski coil sensing: Full range sensing without tap
terminals or exchanging sensors to match load change
requirements.
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• Modular trip unit: Upgrading to a higher current rating,
adding ground fault, power monitoring or communication
is cost effective and expandable using separately
available modules.
• Common accessories: Interchangeable accessories makes up
grading easy and readily available
Practical solution
Applications
The WL line of power breakers are protecting electrical
distribution applications like waste water treatment, industrial
plants, hospitals, transportation systems and data centers just
to name a few. Yes, mission critical applications trust the Siemens
WL circuit breakers to operate safe and reliably. The compact
modular design provides higher power density in a section or
line-up of distribution gear. Components like spring-charging
motor, shunt trips, and trip units are common across the entire
line of breakers. That allows users the ability to stock fewer
spare parts or exchange options if necessary. Common options
and accessories also make learning how to order, maintain
and operate the WL much easier than most breakers on the
market today.
WL circuit breakers are manufactured and performance tested to
comply with UL489 and UL1066 standards for listed products.
UL489 classification type WL breakers are generally intended to
provide service entrance, feeder, and branch circuit protection in
accordance with UL489 Molded Case Circuit Breaker Standard
for Safety. Usage and installation of these breakers are normally
related to UL891 Switchboard or UL508 Industrial Equipment
Listed apparatus. Certain options and maintenance capability
may be limited to or not available as in the UL1066 Listed
breakers. For listing details refer to UL File# E231263
UL1066 classification type WL breakers are generally intended
to provide main and feeder circuit protection in accordance with
UL1066 Low-Voltage Power Circuit Breaker Standard for Safety.
These breakers were also performance tested to comply with
ANSI/IEEE C37.13, C37.16, C37.17, and C37.50. Throughout this
document any reference to UL1066 will also mean ANSI Certified.
Usage and installation of these class breakers are normally related
but not limited to UL1558 Switchgear (switchboards) listed
apparatus. Certain options and ratings may be limited to or not
available as in the UL489 Listed breakers. For listing details refer
to UL File #240124 and 240232.
WL Circuit Breaker selection and application guide