Schneider NSX molded case circuit breaker

Product Overview

1.1 Product Information

ComPacT NSX & NSXm are the next-generation Molded-Case Circuit Breakers (MCCBs) and Switch-Disconnectors launched by Schneider Electric. This product series covers a current range from 16A to 630A, with voltage ratings up to 690V AC, offering multiple performance grades to meet diverse application requirements.

1.2 Product Positioning and Core Value

ComPacT NSX and NSXm series circuit breakers are the next-generation upgraded products based on the original ComPact NSX and NSXm series. The product series has the following core positioning:

• Adopting Schneider Electric’s exclusive Roto-Active Breaking System, which effectively reduces the impact of short-circuit currents on installed equipment and extends the service life of downstream equipment in electrical networks.
• The optimized ComPacT series provides high breaking capacity, excellent selectivity and cascading capability, while offering more forward-looking features and ergonomic design for easier installation and operation.
• The next-generation ComPacT NSXm is the smallest frame size in the ComPacT series, integrating new features and innovative technologies. When integrated with residual current protection, space can be reduced by up to 40%. Combined with EverLink™ connectors, built-in DIN rail, and spring-type auxiliary contacts, installation and wiring time can be reduced by up to 40%.
• New products adopt a new naming rule (Meaningful CR Coding Rules), making product selection and ordering more intuitive and convenient. Each circuit breaker is equipped with a QR code for users to access the latest product information.

1.3 Product Series Architecture

The ComPacT NSX & NSXm series includes the following main product series:

• ComPacT NSXm: Smallest frame size, covering 16A to 160A, offering 5 performance grades (E, B, F, N, H).
• ComPacT NSX 100/160/250: Covering 100A to 250A frames, offering 7 performance grades (B, F, N, H, S, L, R) and 2 high-performance grades (HB1, HB2 for 690V).
• ComPacT NSX 400/630: Covering 400A to 630A frames, offering 6 performance grades (F, N, H, S, L, R) and 2 high-performance grades (HB1, HB2).

Key Features

2.1 Roto-Active™ Breaking Technology

Roto-Active™ breaking technology is an innovative arc extinction technology pioneered by Schneider Electric. This technology effectively limits fault currents through a rotating active arc extinction mechanism, thereby protecting the entire electrical installation system, especially cable networks. Its main advantages include:

• Reducing the impact of short-circuit currents on electrical equipment, extending the service life of all downstream equipment in electrical networks.
• Providing excellent selectivity and cascading capability, optimizing the design flexibility of power distribution systems.
• The technology has been widely applied in the entire ComPacT NSXm series and ComPacT NSX series products.

2.2 EverLink™ Connector Technology

EverLink™ connector is an innovative cable connection method featuring patented creep compensation technology, directly integrated into the terminal. Its main advantages include:

• Providing reliable electrical connections ensuring long-term stable contact performance.
• Simplifying the installation process and reducing wiring time.
• Suitable for various industrial power distribution and electrical equipment application scenarios.

2.3 New Design

The next-generation ComPacT circuit breakers adopt Schneider Electric’s signature green design style, with multiple innovations in human-machine interaction:

• Panel builders’ wiring time expected to be reduced by approximately 40%.
• New ergonomic front panel design for easier installation.
• Standardized auxiliary contact positioning ensures installation accuracy; users only need to double-confirm coil ratings.
• New ergonomic operating handle for easier manual operation of circuit breakers.

2.4 Wireless Communication Function

The next-generation ComPacT circuit breakers support wireless status monitoring for remote device monitoring:

• Plug-and-play technology providing clear connection status indication (0 or 1, no complex wiring needed).
• Consistent positioning with wired version; LED indicator directly displays tripping status.
• Supporting wireless auxiliary contacts for real-time monitoring of circuit breaker status.

2.5 Integrated Residual Current Protection

ComPacT NSXm series provides integrated residual current protection solutions:

• Can be easily integrated into DIN rails without configured residual current protection modules.
• MicroLogic 4.1 electronic trip unit provides LSIR protection (overload, short-circuit, earth fault protection) with overload alarm, overload tripping, residual current alarm and residual current tripping functions.
• Remote monitoring and alarm functions via SDx modules.

2.6 Multiple Performance Grades

ComPacT NSX & NSXm series offer a wide range of performance grades to meet different breaking capacity requirements (at 415V AC):

• Type E – 16kA: Suitable for applications with lower breaking capacity requirements.
• Type B – 25kA: Suitable for general industrial power distribution.
• Type F – 36kA: Suitable for conventional commercial and industrial power distribution.
• Type N – 50kA: Suitable for industrial applications with moderate breaking capacity needs.
• Type H – 70kA: Suitable for industrial applications with high breaking capacity requirements.
• Type S – 100kA: Suitable for distribution systems requiring selective protection.
• Type L – 150kA: Suitable for industrial facilities with high breaking capacity requirements.
• Type R – 200kA: Suitable for special industrial applications with extremely high breaking capacity requirements.
• Type HB1 – 75kA (690V) / Type HB2 – 100kA (690V): High-performance grades for high-voltage industrial applications.

2.7 Multiple Trip Unit Configurations

ComPacT NSX & NSXm series offer various trip unit configurations to accommodate different protection needs:

• Thermal-Magnetic (TM) trip units: Including TM-D (for power distribution) and TM-G (for generator) types, with rated currents covering 16A to 250A.
• Magnetic (MA) trip units: Suitable for applications requiring adjustable magnetic trip values, with rated currents covering 2.5A to 220A.
• MicroLogic 2 series electronic trip units: Providing LSI (overload, short-circuit, earth fault) protection for distribution and generator protection.
• MicroLogic 4 series electronic trip units: Providing LSIR (with adjustable residual current protection) functionality for fine-tuning.
• MicroLogic 5/6 series electronic trip units: Distribution protection trip units with measurement functions.
• MicroLogic 7 series electronic trip units: Advanced measurement and protection functions.

2.8 Sustainability and Eco-Design

ComPacT NSX series follows Schneider Electric’s EcoDesign Way™ design philosophy, excelling in sustainability:

• Compliant with ISO 14025 PEP ecopassport program, publishing comprehensive Life Cycle Analysis, providing environmental data needed for green building certifications.
• ComPacT NSX & NSXm can contribute 3 LEED™ points in the Building Product Disclosure and Optimization category.
• Green Premium™ eco-label: Helping customers achieve green building certification.
• Plastic-less packaging design reducing carbon footprint and workshop waste.
• Products comply with RoHS and REACh regulations.

2.9 EcoStruxure™ Architecture Integration

ComPacT NSX & NSXm series are integrated into Schneider Electric’s EcoStruxure™ architecture platform:

• EcoStruxure is an IoT-based open interoperable system and platform spanning the full lifecycle from CAPEX to OPEX.
• Leveraging advances in IoT, mobile technology, sensing, cloud computing, analytics, and cybersecurity to deliver innovative value at the connected product, end-user system, and business process levels.
• Providing enhanced value to customers in terms of safety, reliability, efficiency, sustainability, and connectivity.

Application Scenarios

3.1 Power Distribution Systems

ComPacT NSX & NSXm molded-case circuit breakers are widely used in various power distribution systems, including:

• Power Distribution Cabinets: Serving as main switches or branch protection devices, providing overload and short-circuit protection.
• Control Cabinets: Used for various control circuit protection in industrial facilities.
• Junction Boxes and Outdoor Electrical Enclosures: Providing reliable circuit protection in harsh environments.
• Switchgear and Distribution Systems: Providing protection and control functions in medium voltage distribution networks.

3.2 Industrial Machinery and Equipment

The product series is suitable for circuit protection of various industrial machinery and equipment:

• Machine Guards and Equipment Access Panels: Protecting industrial equipment from electrical faults.
• Generator Protection: MicroLogic 2.2 G trip unit specifically designed for generator applications with adjustable trip levels (5, 10, 20).
• Motor Protection: MicroLogic 2.3 M trip unit suitable for motor protection with adjustable trip levels and fixed phase unbalance detection.
• Industrial Equipment Cabinets: Providing reliable protection in industrial environments with vibration, dust, or frequent operation.

3.3 Transportation

ComPacT NSX & NSXm series have wide applications in the transportation sector:

• Rail Vehicles: Used for circuit protection in train equipment cabinets, battery boxes, technical compartments, and storage areas. Products undergo vibration testing suitable for rolling stock and mobile systems.
• High-Speed Rail: Providing stable breaking protection and selective coordination in high-speed operating environments.
• Motorhomes and Special Vehicles: Used for circuit protection in RV compartments, battery cabinets, tool boxes, and exterior hatches, resistant to road vibration and weather exposure.
• Generator Sets: Providing reliable power protection and distribution in mobile generating equipment.

3.4 Public Services and Infrastructure

The product series is also suitable for various public service and infrastructure projects:

• Public LV Distribution Network Connection: ComPacT ELCB with MicroLogic AB trip unit can serve as incoming equipment for connection to public low-voltage distribution systems.
• Service Connection Utilities: MicroLogic 2.3 AB trip unit suitable for connection to low-voltage public distribution networks.
• Green Building Projects: Compliant with LEED certification requirements, supporting green building assessment.

3.5 Special Application Scenarios

ComPacT NSX & NSXm series also support the following special application scenarios:

• DC Applications: Some models support DC distribution systems, suitable for solar PV, energy storage systems, and other DC application scenarios.
• High Breaking Capacity Applications: Type R (200kA) and Type HB1/HB2 grades suitable for industrial facilities with extremely high short-circuit currents.
• Selective Protection Systems: Type S grade providing time-delay characteristics for selective coordination between upstream and downstream circuit breakers.
• Smart Distribution Systems with Remote Monitoring: Working with EcoStruxure platform and wireless communication technology for remote monitoring and management of equipment status.