CHNT CJX2-4011 AC Contactor

CJX2-4011 is a 3-คอนแทคเตอร์ AC แบบเสา from CHNT’s classic CJX2 series, with a 40A rated current and equipped with 1 เลขที่ + 1 NC auxiliary contacts.

It is suitable for AC-3 duty (เช่น, three-phase motors) and widely used in industrial motor control, power distribution switching, and automation systems. It is a cost-effective choice from a leading domestic brand.

1. แบบอย่าง & Part Number Explanation

2. Core Technical Specifications

3. คุณสมบัติ & ข้อดี
4. High-reliability contact system

Silver alloy contacts offer good conductivity, anti-welding, and arc resistance

32-sheet silicon steel core for stable, low-noise operation (≤55dB)

Red copper coil + flame-retardant housing for high temperature resistance

2. Dual mounting flexibility

Standard 35mm DIN rail for quick installation

Also supports screw mounting for panel installation

3. Energy saving

Low power consumption for long-term operation

Stable coil pull-in, reduced control circuit energy use

4. Strong compatibility

Directly matches CHNT NR2 series thermal overload relays

Dimensions compatible with Schneider LC1-D40 series for direct replacement

4. การติดตั้ง & Wiring Guide

4.1 ข้อกำหนดในการติดตั้ง

รางปีกนก: Clip onto 35mm standard rail and ensure full locking

Screw mounting: Use M4 screws on a flat surface with ≥10mm clearance for heat dissipation

Prefer vertical installation; avoid horizontal mounting

4.2 Wiring Specification

4.3 Key Wiring Notes

Do NOT mix main pole and coil terminals

Securely crimp wires to avoid overheating

When used with a thermal relay, connect it after T1/T2/T3

5. การใช้งานทั่วไป

Three-phase motor control: 7.5kW~18.5kW pumps, แฟน ๆ, สายพานลำเลียง

การกระจายพลังงานอุตสาหกรรม: cabinet switching, capacitor bank control

Automated production lines: PLC-controlled start/stop and interlock

Building systems: HVAC, elevators, fire pumps

Machine tools: lathes, milling machines, drilling machines

6. Replacement Models & ความเข้ากันได้

6.1 CHNT Upgraded Replacements

6.2 Cross-Brand Equivalents

7. Purchasing & Usage Tips
8. Authenticity

Buy via official channels to avoid counterfeits

Verify model, coil voltage, and poles

2. เครื่องประดับ

Must use with NR2 thermal relay for motor overload protection

Surge suppressor (SR2 series) recommended for frequent switching

3. Selection Rules

AC-3 for motors; AC-1 for resistive loads

Coil voltage must match control power

Higher protection grade for dusty/humid environments

4. Maintenance

Check terminal tightness every 6–12 months

Clean contacts and replace if worn

Energize briefly before long-term storage

> บันทึก: CJX2-4011 is a general-purpose contactor with high cost-performance, stable supply, and easy replacement. Widely used in machinery, เคมี, building materials, light industry.

Complete CHNT AC Contactor Series-Models & Order Codes

Core Overview

CHNT AC contactors cover 5 main series:

ซีเจเอ็กซ์2 (classic), กสทช (Kunlun upgrade), NC1 (industrial IEC), NC2 (high current), NC8 (high voltage heavy duty).

Models are coded by current + ผู้ติดต่อเสริม + coil voltage.

Order codes start with 710010xxxx and cover 6A ~ 1250A.

1. CJX2 Series (Classic, being phased out)

แอปพลิเคชัน: Small-medium motors, 35ราง DIN มม, compatible with Schneider LC1-D.

> บันทึก: 01=1NC, 10=1NO, 11=1NO+1NC. Coil voltages: AC24/36/110/220/380V. Last 3 digits = voltage code.

2. NXC Series (Kunlun Upgrade, Mainstream)

แอปพลิเคชัน: CJX2 replacement, smaller, lower power, longer life.

> บันทึก: Z = DC coil (เช่น, NXC-12Z DC24V); M = mechanical latching.

3. NC1 Series (Industrial IEC Standard)

แอปพลิเคชัน: International standard, ความน่าเชื่อถือสูง, frequent operation.

> บันทึก: NC1-N = reversing contactor. Z = DC coil.

4. NC2 Series (High Current Industrial)

แอปพลิเคชัน: Heavy motors & main circuits up to 800A.

> บันทึก: 3P/4P available. Shunt trip, undervoltage release optional.

5. NC8 Series (High Voltage Heavy Duty)

แอปพลิเคชัน: Up to 1140V, 2650A for metallurgy, การทำเหมืองแร่, marine.

> บันทึก: M = mechanical latching. 4P for 3P+N systems. DC coil available.

6. General Selection & Order Code Rules

6.1 Model Coding

6.2 Order Code Format

มาตรฐาน: 710010xxxxxxx

ตัวอย่าง:

CJX2-4011 AC220V → 710010200403220

NXC-12 DC24V → 710010100000500Z

6.3 จุดเลือกที่สำคัญ

1. Load: AC-3 for motors; AC-1 for resistive loads
2. Coil voltage must match control power
3. Auxiliary contacts: 10, 01, 11, 22
4. Poles: 3P for three-phase; 4P for 3P+N
5. Series Comparison & Recommendation