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:
- Core Parameters and Performance
- 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).
- 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.
- 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.
- 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
- 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
- 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.
- 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).
- Model Types and Accessories
- 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.
- 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.
- 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).
- Precautions for Use
- 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.
- 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:
- Core Electrical Parameters
- 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.
- 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.
- Mechanical and Environmental Parameters
- 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.
- 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.
- 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.
- Model Types and Accessories
- 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.
- 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.
- 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.
- Precautions for Use
- 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.
- 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.
- 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.
