Novel breakers feature speedy switching
A
Moeller Electric product story
Edited by the Engineeringtalk editorial team
Apr 14, 2003
A new modular range of moulded case circuit breakers is packed with new features, including an unusual double break contact for switching.
A new modular range of moulded case circuit breakers from Moeller Electric is packed with new features, including an unusual double break contact for switching.
The units are easy to install, with a very compact footprint and have an optional data communications interface.
Called the NZM1, 2, 3 and 4, the breakers are ideal for applications from cable protection to guarding motors and generators where fast switching is a benefit.
In the event of a short circuit, new switching technology ensures rapid protection by using repelling magnetic power to push the contacts apart in a fraction of the sine wave.
New materials and geometry combine to achieve not only the fast switching, but also a subsequent reduction in heat dissipation, which is an advantage when breakers are installed in control panels.
A reduction in the number of moving parts lengthens service life.
Evidence of the research and development that has gone into the new NZM range is the rationalisation of the mechanical design, with just four frame sizes of switch covering from 25 up to 150kA.
The breakers all use auxiliary contacts, taken from the existing and widely stocked Moeller RMQ-Titan range, which can be fitted very simply and quickly from the front of the breaker during commissioning.
There is also a common base plate for all rotary handles, reducing the number of different handles that may otherwise be required.
In short, the NZM range simplifies specifying and ordering and reduces spares stocking requirements.
Installation is quick and easy, thanks to features such as the ability to mount all accessories from the front of the units, uniform spacers that enable flush front mounting and a range of cable connections to suit any cable management needs.
One innovation that will appeal to systems designers is the ability to link the circuit breakers to other controls.
An optional data management interface allows the current, just prior to tripping, to be recorded and also enables identical configurations to be set quickly in series applications.
The breakers can be networked, using Profibus, to communicate fault, maintenance and diagnostics data with PLCs, HMIs and Scada systems.
This feature simplifies the management of complicated distribution systems.
Specialised applications, such as those where elevated temperatures are encountered, are covered by the breaker's ability to operate, without derating, at temperatures up to +50C.
For marine and offshore installations, the highest switching capacity of 150kA is suitable.
Not what you're looking for? Search the site.
Google Ads
Contact Moeller Electric
Related Stories
- Dualvee technology extends to subzero climates
- SKF launches high-speed linear profile rail guides
- Inmoco introduces three-in-one servo actuators
- Hima installs Himax safety system at Ineos Koln
- Motion-control and linear actuator in one package
Browse by category
-
Capital Equipment (3,495)
- Capital Equipment (1)
- Compressors and Air Treatment (534)
- Electrical hardware (131)
- Electronics Manufacturing, Tools, Instruments (192)
- Machinery and Production Equipment (1,125)
- Manufacturing Machinery and Plant Equipment (474)
- Production line blowers and fans (73)
- Robotics, Handling and Storage (965)
- Consultancy and Services (920)
-
Control and Instrumentation (5,108)
- Cabling, Conduit, Signal Conditioning (813)
- CNC and Motion Controllers (188)
- Control and Instrumentation (2)
- HMIs/Operator Interfaces (296)
- Logic Controllers, Timers and Relays (96)
- Mid-range and Large PLCs (203)
- Plant- and Machine-Wide Communications (1,197)
- Plantwide control (1,350)
- Power Supplies, Uninterruptible Power (573)
- Smaller-Sized PLCs (390)
-
Drives, Motors and Controls (3,429)
- Drives, Motors and Controls (2)
- Industrial Drives/Controls (1,290)
- Industrial Motors (501)
- Linear Drives and Motors (119)
- Precision Motors and Gears (428)
- Stepper and Servo Drives, Motors, Controls (1,087)
-
Electrical and Electronic Equipment Design (4,283)
- Batteries, chargers and circuit protection (578)
- Connectors, Terminals, Busbars, Slip Rings (711)
- Electrical and Electronic Components (647)
- Electrical and Electronic Equipment Design (3)
- Electrical and Electronic Subassemblies (374)
- Enclosures and Equipment Cooling Fans (720)
- Knobs, Handles and Enclosure Hardware (428)
- PCs and Embedded Systems (822)
-
Engineering Design Software (6,328)
- 2D CAD software (202)
- 3D CAD software (1,180)
- CAM, CNC, production management software (576)
- Data, document management software (321)
- Electrical design software (165)
- Engineering Design Software (17)
- FEA and structural analysis software (376)
- File conversion software, data capture (358)
- Fluid, thermal, noise, vibration software (338)
- Materials design and moulding design software (152)
- Maths, charting, statistics, QA software (324)
- PLM and collaboration software (660)
- Process, instrumentation, automation software (269)
- Publishing and documentation software (234)
- Rendering, visualisation, styling software (206)
- Simulation, modelling, validation software (950)
-
Engineering Industry News, Resources (6,201)
- Electronic Resources for Engineers (278)
- Engineering Business News, Views (388)
- Engineering Conferences (435)
- Engineering Education, Resources, Standards (849)
- Engineering Exhibitions, Events (575)
- Engineering Guides, Newsletters (365)
- Engineering Industry Developments, Awards (636)
- Engineering Industry News, Resources (4)
- Engineering Industry Reports, Surveys (597)
- Engineering Recruitment, Employment (219)
- Engineering Seminars (415)
- Engineering Training Courses (457)
- Health and Safety Consultancy, Software (180)
- Health and Safety Events, Training, News (285)
- Health and Safety Legislation (403)
- Health and Safety Strategy, Risk Assessment (115)
- Machine Building (4,607)
-
Materials and Processing (3,021)
- Materials and components (2,259)
- Materials and Processing (5)
- Materials processing and testing (291)
- Rapid Prototyping (466)
-
Monitoring, Measurement and Quality (5,626)
- Data Acquisition Hardware and PC I/O Boards (486)
- Data acquisition Software and Communications (505)
- Data loggers (425)
- Electrical and Electronic Testing, PAT Equipment (641)
- Form/co-ordinate, optical, vision instruments (757)
- Gauges, Indicators and Instruments (448)
- Materials testing equipment (430)
- Monitoring, Measurement and Quality (1)
- Telecomms/network test equipment, software etc (158)
- Testing and Calibration Services and Information (518)
- Testing, analysing and monitoring equipment (1,257)
-
Powertrain Design (3,698)
- Bearings (976)
- Chains and belts (333)
- Gears, brakes, couplings and engines (1,470)
- Hydraulic Components (474)
- Lubricants (441)
- Powertrain Design (3)
-
Sensors (7,251)
- Accelerometers and Vibration Sensors (447)
- Barcode Sensors (103)
- Flowmeters and Flow Sensors (638)
- Gas, Chemical, Radiation, Magnetic Sensors (289)
- Humidity and Environmental Sensors (158)
- Level Sensors and Leak Detectors (537)
- Linear Position Sensors (412)
- Loadcells, Force Sensors, Torque Sensors (725)
- Pressure sensors (635)
- Proximity Sensors (711)
- Rotary Position, Tilt and Angular Sensors (559)
- Sensors (10)
- Temperature sensors (621)
- Vision and Colour Sensors (1,406)
- Small Mechanical Components, Joining, Tools (2,029)
- Valves, Pumps, Process Hardware (3,714)
