Schneider Electric ComPacT NSX160N

Schneider Electric’s ComPacT NSX160N is a high-performance Întrerupător cu carcasă turnată (MCCB), primarily used for overload protection, protectie la scurtcircuit, and isolation functions in low-voltage power distribution systems.

1. Basic Parameters and Design

Cadrul curent: 160O (adjustable range: 112-160O)

Capacitate de rupere: Class N (50cel), suitable for 380-415V AC systems; up to 90kA at 220V, and reduced to 10kA at 690V

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

Tensiune nominală: 690V și (50/60Hz), meeting the power distribution needs of most industrial and commercial applications

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

Protecție la suprasarcină (Ir): Adjustable range of 0.7-1×In (160O)

Protecție la scurtcircuit (Ii): Fixed value of 1250A (aproximativ 7.8 ori mai mare decât curentul nominal)

1. Structure and Installation

Metoda de instalare: Supports fixed, plug-in, and withdrawable mounting, enabling flexible adaptation to different cabinet designs

Dimensiuni generale:

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

Funcții de protecție:

Basic type: Provides long-time overload (L) and instantaneous short-circuit (eu) protection, complying with the IEC 60947-2 standard

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

Funcția de izolare: Complies with the EN/IEC 60947-2 standard and can be used as an isolator

Adaptabilitate la mediu:

Temperatura de functionare: -25°C până la +70°C, humidity ≤95% (fara condens)

Certificari: CCC, EAC, Marine certifications, suitable for industrial, commercial, and marine environments

1. Scenarii de aplicare

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

Control industrial: 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

1. Replacement and Upgrading

Replacement Models: For higher breaking capacity, NSX160H (70cel) or NSX160L (100cel) can be selected

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

1. Selection Recommendations
2. Current Matching: Calculate the rated current (În) based on the load, and ensure that the trip unit setting covers the normal operating current
3. Capacitate de rupere: Select the breaking capacity class (N/H/L) according to the short-circuit current level at the installation location
4. Extensie de accesorii:

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. Precauții

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

Recomandări de întreținere: Regularly inspect the contact wear condition; clean the arc-extinguishing chamber and test the tripping characteristics every 2-3 ani