Masterpact NT is Schneider Electric's compact air circuit breaker series designed for protection, switching and isolation in low voltage power distribution systems. Covering 630A to 1600A ratings, the NT series provides fixed and draw-out configurations with 3-pole and 4-pole options for industrial, commercial and infrastructure applications.
The Schneider Electric Masterpact NT06–NT16 Air Circuit Breaker (ACB) is a compact low-voltage power circuit breaker designed for electrical distribution systems with rated currents from 630 A to 1,600 A. The series includes five frame ratings: NT06, NT08, NT10, NT12 and NT16, providing circuit protection against overloads and short-circuit faults. With electronic MicroLogic trip units, flexible installation configurations and multiple breaking capacity options, the Masterpact NT series is suitable for main power distribution, feeder protection and other high-current switching applications.
The Masterpact NT series is equipped with interchangeable MicroLogic electronic trip units, providing adjustable protection settings for different electrical system requirements. Depending on the selected control unit, protection functions include long-time overload protection, short-time and instantaneous short-circuit protection, as well as earth-fault or earth-leakage protection. Advanced MicroLogic versions also support current, voltage, power and energy measurements, fault indication and communication functions for improved electrical system monitoring and management.
Designed with an optimized frame structure, the Masterpact NT06–NT16 series offers flexible integration into low-voltage switchboards and power distribution cabinets. It is available in 3-pole and 4-pole configurations, with fixed-mounted and drawout installation options. Drawout versions provide connected, test and disconnected positions, allowing easier circuit isolation, inspection and maintenance. Front and rear connection arrangements are also available to accommodate different switchboard layouts.
The Masterpact NT series offers different breaking capacity levels to meet varying short-circuit protection requirements. Available performance categories include H1, H2 and L1, depending on the specific frame rating. H1 and H2 versions are designed for different short-circuit application levels, while L1 versions provide high current-limiting capability for selected NT06, NT08 and NT10 models. Selecting the appropriate breaking capacity helps ensure compatibility with the prospective short-circuit current and protection coordination requirements of the electrical installation.
The Masterpact NT06–NT16 Air Circuit Breaker is suitable for low-voltage power distribution systems in industrial plants, commercial buildings, infrastructure facilities and large electrical installations. Typical applications include main incoming circuit protection, distribution feeder protection, bus-coupler arrangements and power distribution switchboards where reliable switching, fault protection and electrical system continuity are required.
| Parameter | Specification |
| Series | Masterpact NT |
| Rated Current | 630A / 800A / 1000A / 1250A / 1600A |
| Poles | 3P / 4P |
| Installation | Fixed / Draw-out |
| Rated Voltage | Up to 690V AC |
| Standard | IEC 60947-2 |
| Application | Main distribution, industrial and commercial power systems |
| Model | Rated Current | Poles | Mounting |
| NT06 | 630A | 3P / 4P | Fixed / Draw-out |
| NT08 | 800A | 3P / 4P | Fixed / Draw-out |
| NT10 | 1000A | 3P / 4P | Fixed / Draw-out |
| NT12 | 1250A | 3P / 4P | Fixed / Draw-out |
| NT16 | 1600A | 3P / 4P | Fixed / Draw-out |
Jiahong brings together Schneider Electric and ABB products and sourcing services for your project, from individual items to coordinated product packages.
Tell us your requirements. We will reply with a suitable solution and quotation.
