Moeller’s new NZM Molded Case Circuit
Breakers and NS Molded Case Switches are the most modern
on the market. The entire line is designed to save time
and money by using a consistent approach to mounting,
operation, switching and accessories across all frame
sizes.
The New NZM Circuit Breakers provide excellent protection
for control systems in applications from 1 to 1200A with a
short-circuit breaking capacity of up to 150kA. Compact
and feature-rich, these thermal-magnetic, magnetic only
and electronic-trip breakers cover a wide variety of
applications and customer solutions in just four frame
sizes. NZM Circuit Breakers are UL listed, CSA certified
and CCC approved, as well as IEC rated and CE marked,
making them suitable for use anywhere in the world.
Moeller’s circuit breakers and molded case switches
feature components and accessories that can be shared
among frame sizes. For example, Moeller contact elements
(the same elements used with RMQ-Titan control devices)
simply clip into the front of every breaker and switch in
the entire range. Base plates for coupling rotary handles
are the same across the line, meaning faster fitting due
to the identical drilling diagram. The reduced number of
parts means less inventory expense and effort, and results
in fewer errors.
NZM3, NZM4 and, optionally, NZM2 circuit breakers rely on
solid-state circuitry for smart electrical circuit
protection. These electronic-trip breakers are RMS-sensing
and feature adjustable selective coordination, so short
circuit tripping occurs at the closest possible point to
the fault. This built-in selectivity protects cables,
wiring and devices at all levels (with no additional
electronic short-time delayed devices), and allows devices
upstream from a trip to continue to operate without
interruption.
Using Moeller’s Data Management Interface, NZMs
communicate a continuous stream of information about
present load status. Warnings can be issued at 70%, 100%
and 120% Ir, helping to enable shorter reaction times to
system problems and better planning for preventative
maintenance.
NZM operators are durable, ergonomic and come in a variety
of choices. The built-in toggle can be switched manually
or with an optional rotary operator. Rotary operators can
be mounted directly on the NZM or extended through the
panel door or wall using optional operating kit. Front-and
side-mounted rotary operators are available in black or
red and yellow, and are Type 12, and Type 4X rated for
secure enclosures in harsh environments. Moeller also
offers a remote operator for complete control, even from a
distance.
In addition to circuit breakers, Moeller offers NS Molded
Case Switches in the same frame sizes. Rated from 63 to
1200A, these switches use the same fast, snap-action
closing mechanism found in NZM circuit breakers, ensuring
they will work safely under load conditions. NS Switches
also include a fixed short-circuit release for
self-protection.
A molded case switch can serve as a main switch with an
emergency stop function by adding a remote pushbutton and
incorporating double early-make auxiliary contacts and an
undervoltage release. This is easy to do with
cost-effective Moeller products.
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Circuit breakers from 1 to 1200A for a
variety of applications
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UL listed; CSA certified and CCC
approved; IEC, CE compliant for worldwide use
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Compact size for efficient use of space
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Versatile connectivity includes screw
terminals, box lugs or
barrel lugs
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Selective tripping coordination for the
closest possible protection
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Selectivity without add-ons means
planning and installation are quicker and easier
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Different frame sizes share components,
simplifying inventory and installation
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Field-installable accessories for
maximum flexibility
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Broad variety of operator options to
meet every need
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Safety features protect people and
equipment
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