คอนแทคเตอร์,เบรกเกอร์,อินเวอร์เตอร์พลังงานแสงอาทิตย์,มิเตอร์ไฟฟ้า,แบตเตอรี่พลังงานแสงอาทิตย์
ความหมายของแบบจำลอง & Basic Positioning
| Part | ความหมาย |
| CJ | AC Contactor (China Contactor) |
| 20 | Design No. (20th generation) |
| 160 | Rated operational current 160A (AC‑3 category) |
CHINT CJ20‑160 is a 3‑pole AC contactor, a main model in the CJ20 series, suitable for frequent operations such as motor control. It complies with GB/T 14048.4 and IEC/EN 60947‑4‑1 standards.
2. พารามิเตอร์ทางเทคนิคหลัก
Electrical Performance
| รายการ | ค่า | หมายเหตุ |
| Rated operational current (AC‑3) | 160ก | Controls motor power 85kW at 380V |
| Conventional thermal current (Ith) | 200ก | Long‑time permissible current in free air |
| จัดอันดับแรงดันไฟฟ้าของฉนวน (อุ้ย) | 690วี | Maximum voltage withstand class |
| Rated operational voltage (อือ) | Up to 660V (50/60เฮิรตซ์) | Main circuit voltage range |
| Control coil voltage | 110V/127V/220V/380V etc. | 220V and 380V are common |
| การใช้พลังงานคอยล์ | Inrush 855VA, Holding 85.5VA (50เฮิรตซ์) | Energy‑saving versions available |
| Rated operational frequency (AC‑3) | 1200 operations/hour | Typical for motor control |
| Making/breaking capacity | 10 × rated current (1ส) | Withstands motor starting surge |
| Auxiliary contacts | Standard 2NO+2NC (expandable) | For control circuit signaling |
| Mechanical endurance | 10 ล้านการดำเนินงาน | Electrical endurance (AC‑3): 1 ล้านการดำเนินงาน |
Mechanical Structure
Double‑break direct‑acting structure, excellent arc extinguishing
Main contacts made of silver‑based alloy, arc‑resistant and anti‑welding
Overall modular design, easy installation and maintenance
Compatible with RT16‑315 fuse protection
3. Mounting Dimensions & น้ำหนัก
| รายการ | ค่า (มม) |
| Width (ก) | 146 |
| Height (บี) | 187 |
| Depth (ค) | 178 |
| Mounting hole spacing | 130×130 (±0.5) |
| Mounting hole diameter | 9มม |
| น้ำหนัก | Approx. 5.5กก |
การติดตั้ง: Standard 35mm DIN rail or bolt fixing
4. แอปพลิเคชัน & Selection Guide
Scope of Application
1. AC 50/60Hz, power circuits up to 660V
2. Remote switching on/off, frequent control of three‑phase asynchronous motors
3. Combined with thermal overload relays (เช่น, NR2 series) into magnetic starters for overload protection
4. Typical uses: แฟน ๆ, ปั๊ม, คอมเพรสเซอร์, conveyors and other industrial equipment
Selection Notes
For motor control, select according to AC‑3 category (160A ≈ 85kW/380V)
Coil voltage must match control circuit (commonly 220V/380V)
Auxiliary contact quantity to meet control requirements (expandable)
Consider operating frequency and environment (temperature, humidity, ระดับความสูง)
5. International Brand Replacements
| ยี่ห้อ | รุ่นทดแทน | ความเข้ากันได้ |
| ซีเมนส์ | 3RT2036‑1AP00 | Same current class, มิติข้อมูลที่คล้ายกัน |
| เอบีบี | A165‑30‑11 | 165ก, direct replacement |
| ชไนเดอร์ | LC1D15000M7C | 150ก, suitable for light loads |
| ชไนเดอร์ | LC1D18000M7C | 180ก, suitable for heavy loads |
| อีตัน (Moeller) | DIL M175 | 175ก, high performance match |
6. Operation & Maintenance
1. Inspect integrity before installation, remove packaging
2. Ensure terminals are tightly secured to avoid overheating
3. Regularly check contact wear; replace silver alloy contacts at 1/3 thickness
4. Clean arc chute to remove carbon deposits
5. Do not use without arc chute to prevent arc short‑circuit
6. Coil voltage range: 85%–110% of rated value
7. CJ20 Series Model List
| แบบอย่าง | จัดอันดับปัจจุบัน (ก) | Control Power (kW/380V) | Ith (ก) |
| CJ20‑10 | 10 | 4.5 | 16 |
| CJ20‑16 | 16 | 7.5 | 25 |
| CJ20‑25 | 25 | 11 | 40 |
| CJ20‑40 | 40 | 22 | 63 |
| CJ20‑63 | 63 | 30 | 100 |
| CJ20‑100 | 100 | 55 | 140 |
| CJ20‑160 | 160 | 85 | 200 |
| CJ20‑250 | 250 | 132 | 315 |
| CJ20‑400 | 400 | 200 | 500 |
| CJ20‑630 | 630 | 315 | 800 |
The mechanical endurance of CHINT CJ20‑160 is 10 ล้านการดำเนินงาน, the standard design index for no‑load cycles under normal conditions.
Additional Info
1. Electrical endurance: Under AC‑3 (motor control), 1.2 million operations – lower due to arcing and contact wear
2. Series difference: CJ20‑10 ~ CJ20‑160: 10 ล้านการดำเนินงาน; CJ20‑250/400/630: 6 ล้านการดำเนินงาน
3. Life factors: Actual service life depends on frequency, environment, and maintenance
CHINT CJ20 Series: Core Advantages vs Other Series
The CJ20 series is a classic CHINT contactor line with strong advantages in heavy‑duty performance, ทำลายความจุ, durability and compatibility, especially compared with CJX2, NC1 and CJ40 series.
1. Structural & Performance Advantages
1.1 Excellent Breaking & Arc Extinguishing
Double‑break direct‑acting structure; models above 40A use ceramic longitudinal or grid arc chutes, better than CJX2
Breaking capacity up to 10× rated current (1ส), withstands heavy motor starting
Silver‑based alloy main contacts: low resistance, stable temperature rise
1.2 Long Mechanical & Electrical Endurance
| ชุด | Mechanical Endurance (160ก) | Electrical Endurance (AC‑3) | คุณสมบัติ |
| CJ20 | 10 million | 1 million | Full series 10M (250A+: 6M) |
| ซีเจเอ็กซ์2 | 6–10M | 0.6–1M | Smaller sizes lower |
| NC1 | 6–10M | 0.6–1M | Newer, better energy saving |
1.3 Modular & Versatile
Independent auxiliary contacts: standard 2NO+2NC, expandable
Compatible with RT16‑315 fuses and protection modules
35mm DIN rail or bolt mounting
2. Advantages vs Other CHINT Series
2.1 vs CJX2 (Economic Type)
| รายการ | CJ20 | ซีเจเอ็กซ์2 | แอปพลิเคชัน |
| Heavy‑duty | Up to 630A, 315กิโลวัตต์ | Max 95A, ~45kW | CJ20 for large industrial equipment |
| Breaking | Strong, for frequent/ reverse starting | ปานกลาง, normal duty | CJ20 for crushers, mills |
| Environment | Robust, dust/ heat resistant | Compact, clean environments | CJ20 for metallurgy, mining |
2.2 vs NC1 (New Energy‑Saving)
Proven stable platform: decades of field use, low failure rate, ideal for retrofit projects
AC/DC energy‑saving modules (≥63A): low noise
Better price in same size
2.3 vs CJ40 (High‑Performance)
Wider compatibility with thermal relays (เช่น, NR2)
Simpler installation & maintenance, standard dimensions
3. Key Application Strengths
1. High‑power motors: 85กิโลวัตต์ (160ก) to 315kW (630ก)
2. Frequent starting & reversing: ขึ้นไป 1200 operations/hour
3. Long‑distance control in large plants, mines
4. Harsh environments: –25°C to +40°C, ฝุ่น, การสั่นสะเทือน
Core Value of CJ20 Series
CJ20 stands out for maturity, reliability, heavy‑duty capability and strong breaking performance. It is the top choice for heavy industrial control. While slightly less compact or energy‑efficient than CJX2/NC1, it excels in robustness and durability for demanding traditional industry and equipment upgrades.
