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The Compact NSX molded case circuit breaker (MCCB) range is designed to optimize space and breaking capacity. The range comes in two frame sizes with a variety of optional functions and accessories.

Flexible installation: any position, switchboard or wall-mounted
Nominal current: 16 to 630 A
9 Breaking capacities for the two sizes of circuit breakers:
– up to 250 A: 25, 36, 50, 70, 100, 150, 200 kA at 415 V
– up to 630 A: 36, 50, 70, 100, 150, 200 kA at 415 V
– both sizes of circuit breakers with 75 & 100 kA at 690 V
1, 2, 3, and 4 pole versions are available.
A large range of electronic and thermal-magnetic protections
Advanced trip unit with integrated power metering: I, U, P, E, THD, f, CosPhi
Interchangeable trip units to upgrade your panel with smarter functions
Plug and ready wiring system and communicating accessories
The wealth of options for auxiliaries and accessories (field installable)
Integrated earth leakage protection via MicroLogic Vigi (earth leakage circuit breaker, or ELCB)
Visit the Schneider Electric Electrical Calculation Tools to review, search, and check curves, selectivity, and cascading. Alternatively, download the Complementary Technical Information catalogue (PDF), which includes coordination tables.

Easy and efficient

Two standardized frame sizes for your convenience
Save space, time, and effort with integrated earth leakage protection (ELCB) in the molded case circuit breaker (MCCB) frame size.
Easy to swap trip units and standardized accessories over time.
Wide range of online and offline software tools that help to improve productivity at all stages of your project (Product Selector, EcoStruxure Power Design – Ecodial, EcoStruxure Power Build – Low Voltage, EcoStruxure Power Commission)
Optimize safety

Highly resistant to environmental stresses
Roto-active breaking technology helps to reduce early ageing effects and increase operation lifespan
Measure and Communicate

Local and remote communication with trip alarms (earth leakage, overload, and short circuit) and pre-alarms (earth leakage) allow you to proactively increase operational and energy efficiency.
An advanced MicroLogic trip unit can assist in providing corrective, preventative, and predictive maintenance and energy management to identify potential savings.
An excellent choice for all standard and specific applications, including:

Standard applications: industries, buildings, infrastructures
Specific applications demanding high performance include marine, oil and gas extraction and processing, mining operations, metals and minerals production, and data centres.
Source-changeover systems (TransferPact): service sector (hospital operating rooms, computer rooms ), industry (assembly lines, ship engine rooms, etc.), infrastructures runways, railways, etc.)


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