CHINT NXC-65 AC Contactor

NXC-65 from the Kunlun Series by CHINT Electric is a 3-pole AC contactor, rated at 65A in the NXC series. The full model is typically expressed as NXC-65 [แรงดันไฟฟ้าคอยล์] [ความถี่] (เช่น, NXC-65 220V 50Hz). It is mainly used for frequent starting and control of AC motors, as well as remote making and breaking of circuits.

พารามิเตอร์ทางไฟฟ้าหลัก

คุณสมบัติผลิตภัณฑ์

1. โครงสร้างที่กะทัดรัด: Kunlun series design, small size, low installation space requirement
2. มีความน่าเชื่อถือสูง: Made of high-quality materials with precision manufacturing, เหมาะสำหรับสภาพแวดล้อมทางอุตสาหกรรมที่รุนแรง
3. Low power consumption: Low coil power loss, obvious energy-saving effect
4. Easy installation & การซ่อมบำรุง: การติดตั้งราง DIN มาตรฐาน 35 มม, clear terminals for easy operation
5. Strong expandability: Optional auxiliary contacts, air delay modules and other accessories available
6. Good safety performance: Excellent arc extinguishing performance and high breaking capacity

การใช้งาน

AC motor control: Frequent start, stop and reversing control for three-phase asynchronous motors up to approx. 30กิโลวัตต์

Industrial automation systems: Control of production lines, สายพานลำเลียง, แฟน ๆ, ปั๊ม, ฯลฯ.

Electrical control systems: Combined with thermal overload relays to form magnetic starters for motor overload protection

Building electrical: Air conditioning systems, fire equipment, water pump control systems

New energy equipment: Auxiliary control circuits for charging piles, PV inverters, ฯลฯ.

Partial List of CHINT NXC Series Models

Cross-Brand Comparison (Equivalent AC Contactors)

Below is a comparison between CHINT NXC-65 and equivalent contactors from major brands, all functionally compatible:

Brand Feature Comparison

Important Notes

1. Ensure the coil voltage matches the control system to avoid malfunction.
2. Use the contactor with protective devices such as thermal overload relays for motor overload protection.
3. For high-frequency operation, select models with longer electrical life or increase maintenance frequency.
4. Ensure firm wiring of main and control circuits to prevent failures caused by poor contact.

CHINT Contactor Full Series Coding System & การอ้างอิงข้ามแบรนด์

1. CHINT Contactor Series Overview & Naming Rules

1.1 Main Series Classification

1.2 CHINT Contactor Model Naming Rules

NXC Series Format

NXC □□□ [ม] [แรงดันไฟฟ้าคอยล์] [ความถี่]

│ │ │ │ │

│ │ │ │ └─ Coil frequency (50เฮิรตซ์/60 เฮิรตซ์, default 50Hz)

│ │ │ └─ Coil voltage (AC24V/110V/220V/380V or DC24V/110V/220V)

│ │ └─ M = reversing contactor; blank = non-reversing

│ └─ Rated operational current (ก)

└─ Brand code + product type (CHINT + คอนแทคเตอร์เอซี)

Auxiliary Contact Marking

รุ่นพื้นฐาน: default 1NO + 1เอ็นซี (11)

Extended format: NXC-□□□-[XX], where XX = contact combination (01=0NO1NC, 22=2NO2NC)

Special Function Codes

ซี: DC-operated contactor

เอ็น: Reversing contactor (NS = horizontal, NC = vertical)

-12: Newer version with improved performance

2. Complete CHINT Contactor Model List

2.1 Full NXC Series (Kunlun)

2.2 Core Models of Other Series

3. Cross-Brand Reference for CHINT Contactors

3.1 General Contactor Cross Reference (เอซี-3, 380วี)

3.2 Brand Technical Comparison

4. การคัดเลือก & Replacement Guidelines

4.1 Key Selection Parameters

1. จัดอันดับปัจจุบัน (เช่น): Select according to load; for motors, Ie ≥ 1.2 × motor rated current.
2. แรงดันไฟฟ้าคอยล์: Must match control system (AC/DC not interchangeable).
3. Operating frequency: For >1200 การดำเนินงาน/ชั่วโมง, use long-life models.
4. ผู้ติดต่อเสริม: Choose based on control logic (default 1NO+1NC).
5. การติดตั้ง: ราง DIN มาตรฐาน 35 มม; high-current models may use bolt mounting.

4.2 Cross-Brand Replacement Notes

1. Mechanical compatibility

NXC mostly compatible with Schneider LC1-D mounting, but hole positions differ slightly.

Models above 100A vary greatly; brackets may need modification.

2. Electrical compatibility

Coil voltage and frequency must match exactly.

Auxiliary contact ratings differ (CHINT ~5A, some Schneider ~10A).

Short-circuit coordination with fuses/circuit breakers should be rechecked.

3. Performance differences

กสทช: ชีวิตทางกล 1.2 ล้าน, ชีวิตทางไฟฟ้า 100,000 (เอซี-3).

Premium Schneider/Siemens models reach 200,000 electrical cycles for ultra-frequent use.

4.3 NXC vs CJX2 Replacement

5. Quick Motor Selection Table

CHINT contactors cover a full range from 6A to 630A. The NXC (Kunlun) series offers greatly improved performance, reliability and compatibility, and can directly replace the CJX2 series and equivalent products from other brands. สำหรับการเปลี่ยนข้ามแบรนด์, verify rated current, coil voltage, mounting dimensions and auxiliary contact configuration to ensure stable system operation.