Chint AC Contactor NXC-50

    The Chint AC Contactor NXC-50 is a low-voltage electrical appliance suitable for industrial control scenarios, mainly used for frequent switching of AC circuits and motor control. The following is a summary of its core information:  

 I. Core Parameters and Performance  

1. Rated Current and Voltage  

   - Rated working current: 50A (under AC-3 duty), capable of controlling a 22kW motor in 380V/400V systems.  

   - Rated insulation voltage: 690V, with a maximum withstand impulse voltage of 8kV, adapting to a wide voltage range (220V–690V).  

2. Coil Parameters  CHINT Contactor NC1-09*  

   - Voltage options: Supports multiple AC voltages such as 24V, 36V, 48V, 110V, 127V, 220V, 380V, covering global mainstream industrial standards.  

   - Power consumption: 50–70VA during startup, ≤11.4VA during holding; low-power design reduces energy loss.  

   - Action range: Pull-in voltage is 70%–120% of the rated voltage, and release voltage is 20%–65%, ensuring reliable operation in voltage-fluctuating environments.  

3. Contact Configuration  Schneider-MCCB-NSX250F-4P-250A

   - Main contacts: 3-pole normally open (3NO), supporting direct control of three-phase motors.  

   - Auxiliary contacts: Standard configuration is 1 normally open + 1 normally closed (1NO+1NC); some models can be optionally equipped with more auxiliary contacts (e.g., 2NO+2NC) to meet complex control requirements.  

4. Lifespan and Reliability  

   - Mechanical lifespan: 12 million times; electrical lifespan under AC-3 duty reaches 1.2 million times, suitable for high-frequency operation scenarios.  

   - Certifications: Passed CCC and CE certifications, compliant with international standards such as GB/T 14048.4 and IEC 60947-4-1, ensuring quality and safety.  Schneider Circuit Breakers Price*

 II. Application Scenarios  

- Motor Control: Widely used for start-stop control of equipment such as fans, water pumps, and compressors; can be combined with NXR series thermal overload relays to form electromagnetic starters for overload protection.  

- Industrial Automation: Suitable for electrical control systems of production lines, machine tools, cranes, etc., supporting remote control and sequential logic.  

- Power Systems: Used for on-off control of circuits in power distribution systems, compatible with 50Hz/60Hz systems, and adaptable to different power environments.  

 III. Installation and Environmental Requirements  Chint's NB1-63DC series DC circuit breakers Price* 

1. Installation Methods  

   - Supports 35mm standard DIN rail installation or screw fixing, compatible with the universal installation dimensions (102×129×150mm) of the NXC-06M–100 series.  

   - Terminal blocks support 1.5–10mm² hard wires or prefabricated flexible wires, with a tightening torque of 1.85–9N·m to ensure reliable connections.  

2. Environmental Conditions  CHINT surge protector price

   - Temperature range: -5°C–40°C (standard type); some models can be extended to -35°C–+70°C (wide-temperature type).  

   - Humidity: Relative humidity ≤90% at 20°C; avoid use in dew or corrosive environments.  

   - Altitude and pollution degree: Altitude ≤2000m, pollution degree 3 (allowing general conductive pollution).  

 IV. Model Types and Accessories  

1. Meaning of Model Suffixes  

   - /N: Indicates a reversible contactor, supporting forward and reverse motor control (e.g., NXC-50/N).  

   - Other suffixes: For example, "24V," "380V," etc., indicate coil voltage; "1NO+1NC," etc., indicate auxiliary contact configurations.  

2. Compatible Accessories  

   - Thermal overload relays: Compatible with NXR-100 series (37–50A) or JRS1 series for overload protection.  

   - Expansion modules: Optional air delay heads, auxiliary contact groups, etc., to enhance functional expandability.  

 V. Price and Procurement  

- Reference Prices: The price range is approximately 100–220 RMB, varying by coil voltage and sales channel. For example:  

  - 24V model: Approximately 110 RMB.  

  - 220V model: Approximately 103.98–119.53 RMB.  

  - 380V model: Approximately 150–200 RMB.  

- Procurement Channels:  

  - International: Purchasing through platforms by contacting WhatsApp: 0086-13811255435, or contacting Chint's overseas distributors (logistics timeliness needs confirmation).  

 VI. Precautions for Use  

1. Wiring and Maintenance  

   - Confirm that the coil voltage matches the control circuit before installation to avoid coil burnout due to incorrect wiring.  

   - Regularly inspect contact wear to ensure good contact; clean dust from the housing to prevent poor heat dissipation.  

2. Safety Protection  

   - Protection level IP20, which can prevent the intrusion of solids larger than 12mm, but avoid naked use in humid or dusty environments.  

   - Power off during operation to avoid direct contact with live parts and ensure personal safety.  

The technical parameters of Chint AC Contactor NXC-50 can be confirmed through the 2025 edition product manual and official documents. The following is a detailed summary based on the latest information:  

 I. Core Electrical Parameters  

1. Main Circuit Performance  

   - Rated working current (Ie): 50A (AC-3 duty), capable of controlling a 22kW motor in 380V/400V systems.  

   - Rated insulation voltage (Ui): 690V, with a maximum withstand impulse voltage of 8kV, covering the wide voltage range of 220V–690V.  

   - Short-time withstand current: Can withstand 8 times the rated current (400A) for 10 seconds in cold state, adapting to transient overload conditions.  

2. Coil Parameters  

   - Voltage range: Supports AC voltages such as 24V, 36V, 48V, 110V, 127V, 220V, 380V, with frequencies of 50Hz/60Hz.  

   - Power consumption characteristics: 50–70VA during startup, ≤9.5VA during holding, saving about 60% energy compared to traditional contactors.  

   - Action range: Pull-in voltage is 70%–120% of the rated value, and release voltage is 20%–65%, adapting to ±30% voltage fluctuations.  

3Contact Configuration  

   - Main contacts: 3-pole normally open (3NO), made of silver alloy with contact resistance ≤50mΩ, supporting direct control of three-phase loads.  

   - Auxiliary contacts: Standard configuration is 1NO+1NC; optional expansion modules can achieve 2NO+2NC to meet complex logic control needs.  

 II. Mechanical and Environmental Parameters  

1. Mechanical Performance  

   - Lifespan indicators: Mechanical lifespan of 12 million times; electrical lifespan under AC-3 duty reaches 1.2 million times, suitable for high-frequency operation scenarios (e.g., fan start-stop).  

   - Action time: Closing time 12–40ms, opening time 4–25ms, with response speed 15% higher than traditional models.  

2. Installation and Dimensions  

   - Installation methods: Supports 35mm DIN rail or screw fixing, with installation dimensions of 102×129×150mm, compatible with the universal base of NXC-06M–100 series.  

   - Terminal blocks: Main circuit supports 1.5–10mm² hard wires or prefabricated flexible wires, with a tightening torque of 1.85–9N·m, suitable for crimp-type copper lugs.  

3. Environmental Adaptability  

   - Temperature range: Standard type -5°C–+40°C; wide-temperature type (e.g., NXC-50XM) up to -40°C–+70°C, adapting to extreme industrial environments.  

   - Humidity and altitude: Relative humidity ≤90% at 20°C; altitude ≤2000m (wide-temperature type ≤3000m); pollution degree 3 (general conductive pollution).  

 III. Certifications and Standards  

- Domestic certifications: Passed CCC certification, compliant with national standards such as GB/T 14048.4-2016 and GB 21518-2008.  

- International certifications: Obtained CE certification, meeting IEC 60947-4-1:2016 standards, but UL certification is not explicitly mentioned.  

- Environmental requirements: Compliant with RoHS directive, lead-free design, adapting to EU market access requirements.  

 IV. Model Types and Accessories  

1. Explanation of Model Suffixes  

   - /N: Reversible contactor (e.g., NXC-50/N), supporting forward and reverse motor control, requiring a double-contactor interlock circuit.  

   - XM: Wide-temperature type (e.g., NXC-50XM), with extreme working temperature extended to -40°C–+70°C, suitable for outdoor or low-temperature environments.  

2. Compatible Accessories  

   - Thermal overload relays: Compatible with NXR-100 series (37–50A) or JRS1-63 series, providing overload protection with a breaking capacity of up to 50kA.  

   - Expansion modules: Optional air delay heads (0.1–300 seconds), mechanical interlock modules (for reversible control), etc., to enhance functional expandability.  

 V. Price and Procurement  

- Reference Prices: Prices vary significantly by coil voltage. For example:  

  - 24V model: Approximately 106–110 RMB.  

  - 220V model: Approximately 103–176 RMB.  

  - 380V model: Approximately 150–263 RMB.  

 VI. Precautions for Use  

1. Wiring Specifications  

   - Confirm that the coil voltage matches the control circuit before installation to avoid coil burnout due to incorrect wiring.  

   - Ensure correct connection of phase and neutral wires in the main circuit to avoid single-phase operation.  

2. Maintenance Recommendations  

   - Inspect contact wear every 500 hours of operation; replace contacts when the wear thickness exceeds 1/3 of the original thickness.  

   - Clean dust from the housing to ensure unobstructed heat dissipation holes and prevent lifespan reduction due to excessive temperature rise.  

3. Safety Protection  

   - Protection level IP10 (NXC-40–100), requiring use with a distribution box to avoid direct exposure to dust or humid environments.  

   - Power off and test for electricity during operation to prevent electric shock risks.  

For further verification of parameters, please visit Chint Electric's official website  to download the *2025 NXC Series AC Contactor Manual* or contact technical support for datasheets and selection guides.