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MasterPact NW

Circuit breakers to protect lines up to 6300 A

Categories: , Product ID: 29892


The worldwide benchmark for high current circuit breakers

MasterPact NW circuit breakers are equipped with MicroLogic control units that offer built-in power and energy metering in addition to basic or advanced protection functions. Two sizes are sufficient to cover applications from 800 to 6300 A, with a breaking capacity from 42 to 150 kA.
The range comes with a wide choice of standardized accessories. The universal design of the MasterPact circuit breaker line allows most accessories to be used across the entire line. It enables the standardization of electrical switchboards by providing peace of mind in terms of choice, installation, and operation.

Rated current: 800 to 6300 A
Breaking capacity: 42 to 150 kA at 220/415 V AC
Voltage rating: up to 1150 V AC
There are two physical sizes: 800 to 4000 A and 4000 A to 6300 A.
Draw out and fixed mount
3-pole and 4-pole construction
Electronic MicroLogic control units, integrating current, voltage, power, and energy metering enabling energy management, earth leakage protection, and other advanced protection or network analysis functions
Switch disconnectors version available
Optimized a range of field-installable auxiliaries and accessories
Different offers complying with different international standards include: IEC 60947, UL489, ANSI/UL1066
CCC, EAC, and other local certifications
Compliance with specifications of marine classification companies: Bureau Veritas, Lloyd’s Register of Shipping, Det Norske Veritas, etc.
MicroLogic control unit specifications:

Four levels of protection against overloads and short circuits: 2.0 (LI), 5.0(LSI), 6.0(LSIG), 7.0 (LSIV, built-in earth leakage protection)
Four types of measurement: A (Ammeter), E (Energy), P (Power), and H (Harmonics)
Energy reduction maintenance setting (ERMS) function available for arc flash protection for MicroLogic P and MicroLogic H
Measurement accuracy: Class 0.5 for voltage, Class 1.5 for current, and Class 2 for active power and energy
Compatible with both Ethernet and Modbus SL protocol
Operating assistance to diagnose tripping cause and maintenance information
MasterPact NW circuit breakers contribute to the reliability and continuity of service of your electrical installation thanks to the:

Optimized safety

Faultless protection
Increased uptime with improved coordination with MicroLogic electronic trip unit adjustability
Complete selectivity and coordination
High resistance to environmental stresses
Integrated monitoring for energy efficiency

Improved uptime with a complete monitoring solution in Smart Panels
Seamless integration into power monitoring systems enables to track of energy consumption trends, anticipate potential damage and improve network reliability

Local and remote communication with trip cause (earth leakage, overload, short-circuit) and alarms (earth leakage, overload) allow proactive operational and energy efficiency
Advanced MicroLogic control unit can assist in providing corrective, preventive, and predictive maintenance, and energy management to identify potential savings: energy consumption data, operation follow-up, network monitoring, preventative and predictive maintenance information, pre-alarm and alarm events
General applications in all types of low voltage electrical installations

Suitable in most applications for protection, measurement, monitoring, and quality of energy, including generator protection and motor protection, in standard applications and specific applications demanding high performance, including:

Industry: mining operations, minerals, metals, and cement production, water & wastewater industry, automotive, food, and beverage, etc.
Oil & Gas extraction and processing, Chemicals industries
Data centers infrastructure
Healthcare infrastructure, hospitals
Marine and offshore industry
Infrastructures: airports, railways, subways, tunnels, power plants, etc.
Buildings: commercial buildings, hotels, offices
Wind turbines, solar, gensets
Special applications

Photovoltaic and DC networks (MasterPact NW DC & DC PV)
Corrosive industrial environments (special versions)
Mining industry (special 1000V versions)
High short-circuit current limiting (ultra-rapid MasterPact UR)
Navy (MasterPact NT and NW Navy)
UL 489 (MasterPact NT and NW UL 489 listed)
Source-changeover systems (TransferPact): service sector (hospital operating rooms, computer rooms, etc.), industry (assembly lines, ship engine rooms, etc.), infrastructures (runway, railway, etc.)


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