Schneider Electric ComPacT NSX160N

Schneider Electric’s ComPacT NSX160N is a high-performance Molded Case Circuit Breaker (MCCB), primarily used for overload protection, защита от короткого замыкания, and isolation functions in low-voltage power distribution systems.

Basic Parameters and Design

Ток кадра: 160А (adjustable range: 112-160А)

Разрывная способность: Class N (50тот), suitable for 380-415V AC systems; up to 90kA at 220V, and reduced to 10kA at 690V

Номер полюса: 3P or 4P (In the 4P model, the neutral wire (Н) is located on the left; the 3D design indicates that the N wire is not involved in protection)

Номинальное напряжение: 690В и (50/60Гц), meeting the power distribution needs of most industrial and commercial applications

Trip Unit Type: TMD (Thermomagnetic Trip Unit), providing overload (л) and short-circuit (я) protection, including:

Защита от перегрузки (Ir): Adjustable range of 0.7-1×In (160А)

Защита от короткого замыкания (Ii): Fixed value of 1250A (примерно 7.8 раз номинальный ток)

Конструкция и установка

Способ установки: Supports fixed, plug-in, and withdrawable mounting, enabling flexible adaptation to different cabinet designs

Overall Dimensions:

4P model: Width 140mm × Height 161mm × Depth 86mm, weight 2.6kg

3P model: The width may be narrower (105mm according to some data), and confirmation is required based on the specific model

Connection Method: Front connection design, with a terminal spacing of 35mm, supporting horizontal or vertical installation

III. Functions and Certifications

Функции защиты:

Basic type: Provides long-time overload (л) and instantaneous short-circuit (я) protection, complying with the IEC 60947-2 стандартный

Optional expansion: Leakage protection, undervoltage tripping, remote control (например, MX/MN coils) can be realized by adding modules

Функция изоляции: Complies with the EN/IEC 60947-2 standard and can be used as an isolator

Экологическая адаптивность:

Рабочая температура: -25°C to +70°C, humidity ≤95% (нет конденсата)

Certifications: CCC, EAC, Marine certifications, suitable for industrial, коммерческий, and marine environments

Сценарии применения

Power Distribution Systems: Used as a main switch or branch switch to protect circuits for motors, освещение, and mixed loads

Industrial Control: Cooperates with devices such as contactors and relays to build automatic control circuits

Renewable Energy: Suitable for overcurrent protection in distributed generation systems such as solar energy and wind energy

Replacement and Upgrading

Replacement Models: For higher breaking capacity, NSX160H (70тот) or NSX160L (100тот) можно выбрать

Digital Upgrading: The new generation of ComPacT NSX series (например, NSX160N-D) supports the EcoStruxure Power architecture and can integrate functions such as wireless monitoring, energy metering, and service life prediction

Рекомендации по выбору
Текущее соответствие: Calculate the rated current (In) based on the load, and ensure that the trip unit setting covers the normal operating current
Разрывная способность: Select the breaking capacity class (N/H/L) according to the short-circuit current level at the installation location
Accessory Expansion:

Auxiliary Contact (OF): Used to indicate the status of the circuit breaker

Motorized Operating Mechanism (MT): Enables remote switching on and off

Leakage Module (Vigi NSX): Provides residual current protection

VII. Меры предосторожности

Installation Specifications: Must comply with IEC 60947-2 and local electrical installation standards, and ensure that the terminal torque meets the requirements

Рекомендации по техническому обслуживанию: Регулярно проверяйте состояние износа контактов.; clean the arc-extinguishing chamber and test the tripping characteristics every 2-3 годы