친트 접촉기 NXC18-380V

그만큼 Chint Contactor NXC18-380V belongs to the Kunlun Series AC contactors, specifically designed for industrial control applications.

1. 핵심 기술 매개변수
2. 주 회로 매개변수

정격 작동 전류: 18에이 (under AC-3 utilization category, corresponding to 380V/400V main circuit voltage).

정격 절연 전압: 690다섯, capable of adapting to voltage fluctuations in complex industrial environments.

극 구성: 3-극 상시 열림 (아니요) 주요 연락처, supporting three-phase motor control.

차단 용량: Rated making current is 180A (10×Ie), and breaking current is 144A (8×Ie), meeting the requirements of frequent starting and stopping.

2. 제어 회로 매개변수

코일 전압: 380뷔와 (50헤르츠), directly compatible with industrial standard control voltages.

Power Consumption Characteristics: Pull-in power consumption is approximately 40-60VA, and holding power consumption is only 2-7VA, featuring significant energy-saving effects.

Operating Range: Pull-in voltage ranges from 70% 에게 120% 정격값의, and release voltage ranges from 20% 에게 70% 정격값의, ensuring reliable triggering.

3. Auxiliary Contact Configuration

Built-in Contacts: 1 평상시 열려 있음 (아니요) + 1 평상시 닫혀 있음 (NC) 보조 접점, enabling extended control logic.

접점 용량: The rated current of auxiliary contacts is 5A, supporting signal feedback or interlock control.

1. Mechanical and Environmental Characteristics
2. 구조 설계

장착 방법: Supports 35mm DIN rail clipping or screw fixing, compatible with standardized control cabinet layouts.

Dimensions and Weight: Compact design with dimensions of 88mm×45mm×75mm and a weight of 367g, 공간 절약 및 유지 관리 용이.

보호 등급: IP20 (protects against intrusion of solid foreign objects larger than 12mm), suitable for conventional industrial environments.

2. 환경 적응성

작동 온도: -5℃~+40℃ (long-term), with extreme temperature resistance of -35℃~+70℃, adapting to wide-temperature environments.

Altitude Requirement: 2000미터 이하, meeting the needs of most industrial sites.

Vibration and Shock Resistance: The inclination of the mounting surface is ≤±5°, allowing stable operation in scenarios without significant vibration.

III. Application Scenarios and Supporting Solutions

1. 일반적인 응용 분야

모터 제어: Directly controls 7.5kW three-phase asynchronous motors (under AC-3 category), compatible with fan and pump loads.

Automation Systems: Used for production line start-stop control and sequential logic interlocking, supporting PLC integration.

배전 시스템: 열 과부하 릴레이와 결합 (예를 들어, NR2 Series) to form electromagnetic starters, 과부하 보호 제공.

2. Selection and Matching

Fuse Matching: NT00-20 type fuses (gG20) are recommended for short-circuit protection.

Thermal Overload Relay Model: NR2-25/Z, with a rated current adjustment range of 12-18A, accurately matching load characteristics.

1. Certifications and Reliability

International Certifications: CCC 및 CE 인증, compliant with GB/T 14048.4/IEC 60947-4-1 표준, applicable for export projects.

서비스 수명 지표: Mechanical life of 12 백만 개의 작업, electrical life of 1.2 백만 개의 작업 (under AC-3), meeting the requirements of long-term high-load operation.

Material and Technology: Silver alloy contacts have strong arc resistance, and the enhanced spring mechanism ensures rapid contact breaking, reducing the risk of welding.

1. 설치 및 유지 관리 핵심 사항
2. 배선사양

주회로: Supports 1.5-6mm² solid wires or 1-4mm² flexible wires, fastened with M3.5 screws (tightening torque: 0.8N·m).

제어 회로: 1-2.5mm² wires are connected to A1/A2 terminals; shielded wires are recommended for anti-interference.

. Commissioning Recommendations

Pull-in Test: Measure the coil resistance before power-on (approximately 1.2kΩ for the 380V specification) to verify coil integrity.

Contact Inspection: Regularly clean the oxide layer on the contact surface to ensure the contact resistance is ≤50mΩ.

1. Alternative Solutions and Upgrade Paths

For function expansion, the following upgrade solutions can be considered:

NXC-22 (22에이): Enhanced current capacity, suitable for 11kW motor control.

NXC-25 (25에이): Supports DC coil versions, compatible with DC control power supply systems.

Intelligent Contactors: 예를 들어, NXC-18 paired with the iMCC control module, enabling remote monitoring and energy management.

Ⅶ. Typical Application Case

In a certain food processing production line, the NXC18-380V is used to control the conveyor belt motor:

Control Logic: PLC sends signals to drive the contactor to realize motor forward and reverse switching.

Protection Mechanism: Combined with the NR2 thermal overload relay, when the motor current exceeds 18A due to stalling, the power supply is cut off within 0.5 초.

Reliability Performance: It has operated continuously for 18 months without faults, with contact wear less than 0.1mm and the maintenance cycle extended by 30%.

Ⅷ. Procurement and Compatibility Recommendations

Channel Selection: Purchase through Chint-authorized distributors (왓츠앱: 0086-13811255435) to ensure the products are accompanied by CCC certification and original factory quality assurance.

Compatibility Verification: 설치 전, check that the coil voltage (380뷔와) matches the control cabinet power supply to avoid misoperation caused by voltage deviation.

With its high cost-effectiveness and stable performance, the NXC18-380V has become the preferred solution for small and medium-sized motor control, especially suitable for industrial scenarios requiring frequent starting/stopping and high reliability. When selecting the product, it is necessary to consider load characteristics and environmental conditions; if necessary, consult Chint technical support to obtain customized solutions.