المقاولين,قاطع الدائرة,العاكس للطاقة الشمسية,عداد كهرباء,البطاريات الشمسية
معنى النموذج & Basic Positioning
| Part | معنى |
| 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. المعلمات التقنية الأساسية
الأداء الكهربائي
| غرض | قيمة | ملحوظات |
| Rated operational current (AC‑3) | 160أ | Controls motor power 85kW at 380V |
| Conventional thermal current (إيث) | 200أ | Long‑time permissible current in free air |
| تصنيف الجهد العزل (واجهة المستخدم) | 690V | Maximum voltage withstand class |
| Rated operational voltage (إي) | Up to 660V (50/60هرتز) | Main circuit voltage range |
| Control coil voltage | 110V/127V/220V/380V etc. | 220V and 380V are common |
| Coil power consumption | Inrush 855VA, Holding 85.5VA (50هرتز) | Energy‑saving versions available |
| Rated operational frequency (AC‑3) | 1200 operations/hour | Typical for motor control |
| Making/breaking capacity | 10 × rated current (1ق) | Withstands motor starting surge |
| اتصالات مساعدة | Standard 2NO+2NC (expandable) | For control circuit signaling |
| Mechanical endurance | 10 مليون عملية | Electrical endurance (AC‑3): 1 مليون عملية |
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 & وزن
| غرض | قيمة (مم) |
| Width (أ) | 146 |
| Height (ب) | 187 |
| Depth (ج) | 178 |
| Mounting hole spacing | 130×130 (±0.5) |
| Mounting hole diameter | 9مم |
| وزن | تقريبا. 5.5كجم |
تصاعد: Standard 35mm DIN rail or bolt fixing
4. طلب & Selection Guide
نطاق التطبيق
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 (على سبيل المثال, NR2 series) into magnetic starters for overload protection
4. Typical uses: المشجعين, مضخات, الضواغط, 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, ارتفاع)
5. International Brand Replacements
| ماركة | نموذج الاستبدال | التوافق |
| سيمنز | 3RT2036‑1AP00 | Same current class, similar dimensions |
| ايه بي بي | A165‑30‑11 | 165أ, direct replacement |
| شنايدر | LC1D15000M7C | 150أ, suitable for light loads |
| شنايدر | LC1D18000M7C | 180أ, suitable for heavy loads |
| إيتون (Moeller) | DIL M175 | 175أ, high performance match |
6. Operation & صيانة
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
| نموذج | التصنيف الحالي (أ) | قوة التحكم (kW/380V) | إيث (أ) |
| 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 مليون عملية, 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 مليون عملية; CJ20‑250/400/630: 6 مليون عملية
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, كسر القدرة, durability and compatibility, especially compared with CJX2, NC1 and CJ40 series.
1. Structural & مزايا الأداء
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 (1ق), withstands heavy motor starting
Silver‑based alloy main contacts: low resistance, stable temperature rise
1.2 Long Mechanical & Electrical Endurance
| مسلسل | Mechanical Endurance (160أ) | Electrical Endurance (AC‑3) | سمات |
| CJ20 | 10 million | 1 million | Full series 10M (250A+: 6م) |
| CJX2 | 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)
| غرض | CJ20 | CJX2 | طلب |
| Heavy‑duty | Up to 630A, 315كيلوواط | Max 95A, ~45kW | CJ20 for large industrial equipment |
| Breaking | قوي, for frequent/ reverse starting | واسطة, 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 (على سبيل المثال, NR2)
Simpler installation & maintenance, standard dimensions
3. Key Application Strengths
1. High‑power motors: 85كيلوواط (160أ) to 315kW (630أ)
2. Frequent starting & reversing: up to 1200 operations/hour
3. Long‑distance control in large plants, mines
4. Harsh environments: –25°C to +40°C, dust, vibration
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.
