Breakers cover full range of currents
A
Moeller Electric product story
Edited by the Engineeringtalk editorial team
Jun 13, 2006
Moulded case circuit breakers greatly simplify the specification and design of electrical distribution systems.
Offering complete uniformity across the full range from 15 to 1600A Moeller Electric's new NZM moulded case circuit breakers greatly simplify the specification and design of electrical distribution systems.
In addition, as the whole range uses the same accessories, users can make substantial savings on stock and engineering.
Available in both three- and four-pole versions with a choice of toggle or rotary actuators, Moeller's new NZM breakers are offered with four levels of switching capacity.
The economical 25kA units, that can be supplied with ratings up to 250A, are a cost-effective choice for small subdistribution boards, and the 150kA devices provide a convenient solution for high-power distribution.
Intermediate ratings of 50 and 100kA mean that NZM breakers can always be optimally matched to the installation.
Just four frame sizes are used in the NZM range, covering applications up to 160, 250, 630 and 1600A ,respectively.
All sizes feature compact construction with 160A size 1 device, in particular, offering substantial space savings.
This makes it especially suitable for use in machine control systems and power distribution boards where space is invariably at a premium.
For all NZM breakers, other than those with the smallest frame size, electronic trip systems are available.
Not only do these allow the protective functions to be precisely tailored to the user's needs, they also provide communication and onboard diagnostic facilities, allowing easy integration with modern automation and plant-monitoring systems.
Designed for ease of use, NZM breakers accept auxiliary contacts that are installed from the front of the device.
In addition, they are offered with a choice of spring-clamp or screw connections for control and auxiliary circuits.
As well as standard versions, the versatile NZM range also features withdrawable devices, and the functionality of all products in the range can be further enhanced by a comprehensive family of accessories.
These include door-coupling handles, side-wall operators, remote actuators and withdrawable mounting frames.
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