المقاولين,قاطع الدائرة,العاكس للطاقة الشمسية,عداد كهرباء,البطاريات الشمسية
Schneider Electric’s ComPacT NSX160N is a high-performance Molded Case Circuit Breaker (MCCB), primarily used for overload protection, short-circuit protection, and isolation functions in low-voltage power distribution systems.
- Basic Parameters and Design
Frame Current: 160أ (adjustable range: 112-160أ)
Breaking Capacity: Class N (50kA), suitable for 380-415V AC systems; up to 90kA at 220V, and reduced to 10kA at 690V
Pole Number: 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)
Rated Voltage: 690V AC (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 (I) حماية, including:
Overload Protection (Ir): Adjustable range of 0.7-1×In (160أ)
Short-Circuit Protection (Ii): Fixed value of 1250A (approximately 7.8 times the rated current)
- Structure and Installation
Installation Method: 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
Protection Functions:
Basic type: Provides long-time overload (L) and instantaneous short-circuit (I) حماية, complying with the IEC 60947-2 standard
Optional expansion: Leakage protection, undervoltage tripping, remote control (e.g., MX/MN coils) can be realized by adding modules
Isolation Function: Complies with the EN/IEC 60947-2 standard and can be used as an isolator
Environmental Adaptability:
Operating temperature: -25°C to +70°C, humidity ≤95% (no condensation)
Certifications: CCC, EAC, Marine certifications, suitable for industrial, commercial, and marine environments
- Application Scenarios
Power Distribution Systems: Used as a main switch or branch switch to protect circuits for motors, lighting, 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 (70kA) or NSX160L (100kA) can be selected
Digital Upgrading: The new generation of ComPacT NSX series (e.g., NSX160N-D) supports the EcoStruxure Power architecture and can integrate functions such as wireless monitoring, energy metering, and service life prediction
- Selection Recommendations
- Current Matching: Calculate the rated current (In) based on the load, and ensure that the trip unit setting covers the normal operating current
- Breaking Capacity: 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. Precautions
Installation Specifications: Must comply with IEC 60947-2 and local electrical installation standards, and ensure that the terminal torque meets the requirements
Maintenance Recommendations: Regularly inspect the contact wear condition; clean the arc-extinguishing chamber and test the tripping characteristics every 2-3 years
