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Circuit-breakers to protect DC energized lines, up to 4000 A
Features
High current air circuit breakers for DC installations
MasterPact NW DC circuit breakers are equipped with MicroLogic DC control units that offer built-in adjustable instantaneous protection. One unique size covers applications from 1000 to 4000 A, with breaking capacity from 25 to 100 kA, depending on the time constant L/R and on the voltage level. 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 standardization of electrical switchboards by providing peace of mind in terms of choice, installation, and operation.
Specifications
- Rated current: 1000, 2000, and 4000 A
- Breaking capacity: up to 85 kA at 900 V DC and L/R = 5 ms
- Voltage rating: up to 900 V DC (switch disconnectors for PV application: up to 1000 V DC)
- 1 unique physical size
- Draw out and fixed mount
- 3-pole – type C & D, and 4-pole – type E construction
- MicroLogic DC control unit, offering built-in adjustable instantaneous protection, operating with electromagnetic sensors
- Circuit breakers for the protection of power circuits and loads
- Switch disconnectors for control circuit and disconnection
- Optimized range of field-installable auxiliaries and accessories
- Offer complying with different international standards: IEC 60947, UL489, ANSI/UL1066
- Compliance with specifications of marine classification companies: Lloyd’s Register of Shipping
Benefits
MasterPact NW circuit breakers contribute to reliability and continuity of service of your electrical installation thanks to:
Optimized safety
- Faultless protection
- Complete selectivity and coordination
- High resistance to environmental stresses
Integrated monitoring for energy efficiency
- Increased uptime with improved coordination with MicroLogic trip unit
Seamless installation
- Compactness
- Standardized range of auxiliaries and accessories
Applications
General applications in all types of direct current electrical installations, including photovoltaic applications
Suitable in most applications for protection demanding high performance, including:
- Photovoltaic applications, wind farm installations, and energy storage systems
- Data centers
- Industry
- Marine and offshore industry
- Nuclear power