Контактор,автоматический выключатель,солнечный инвертор,электрический счетчик,солнечные батареи
Модель Значение & Basic Positioning
| Часть | Значение |
| 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. Основные технические параметры
Электрические характеристики
| Элемент | Ценить | Примечания |
| Rated operational current (АС‑3) | 160А | Controls motor power 85kW at 380V |
| Conventional thermal current (Это) | 200А | Long‑time permissible current in free air |
| Номинальное напряжение изоляции (Уи) | 690В | Maximum voltage withstand class |
| Rated operational voltage (Уэ) | Up to 660V (50/60Гц) | 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 (50Гц) | Energy‑saving versions available |
| Rated operational frequency (АС‑3) | 1200 operations/hour | Typical for motor control |
| Making/breaking capacity | 10 × rated current (1с) | Withstands motor starting surge |
| Auxiliary contacts | Standard 2NO+2NC (expandable) | For control circuit signaling |
| Механическая выносливость | 10 миллион операций | Электрическая выносливость (АС‑3): 1 миллион операций |
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. Монтажные размеры & Масса
| Элемент | Ценить (мм) |
| Ширина (А) | 146 |
| Высота (Б) | 187 |
| Глубина (С) | 178 |
| Mounting hole spacing | 130×130 (±0.5) |
| Mounting hole diameter | 9мм |
| Масса | Приблизительно. 5.5кг |
Монтаж: Standard 35mm DIN rail or bolt fixing
4. Приложение & Selection Guide
Область применения
1. переменный ток 50/60 Гц, power circuits up to 660V
2. Remote switching on/off, frequent control of three‑phase asynchronous motors
3. В сочетании с тепловыми реле перегрузки. (например, NR2 series) into magnetic starters for overload protection
4. Typical uses: фанаты, насосы, компрессоры, conveyors and other industrial equipment
Примечания к выбору
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, влажность, высота)
5. International Brand Replacements
| Бренд | Запасная модель | Совместимость |
| Сименс | 3RT2036‑1AP00 | Same current class, аналогичные размеры |
| АББ | A165‑30‑11 | 165А, direct replacement |
| Шнайдер | LC1D15000M7C | 150А, suitable for light loads |
| Шнайдер | LC1D18000M7C | 180А, suitable for heavy loads |
| Итон (Moeller) | DIL M175 | 175А, high performance match |
6. Операция & Обслуживание
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
| Модель | Номинальный ток (А) | Контрольная мощность (kW/380V) | Это (А) |
| 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 миллион операций, the standard design index for no‑load cycles under normal conditions.
Additional Info
1. Электрическая выносливость: Under AC‑3 (motor control), 1.2 million operations – lower due to arcing and contact wear
2. Series difference: CJ20‑10 ~ CJ20‑160: 10 миллион операций; CJ20‑250/400/630: 6 миллион операций
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, отключающая способность, 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 (1с), withstands heavy motor starting
Silver‑based alloy main contacts: low resistance, stable temperature rise
1.2 Long Mechanical & Electrical Endurance
| Ряд | Mechanical Endurance (160А) | Electrical Endurance (АС‑3) | Функции |
| CJ20 | 10 million | 1 million | Full series 10M (250A+: 6M) |
| CJX2 | 6–10M | 0.6–1M | Smaller sizes lower |
| NC1 | 6–10M | 0.6–1M | Newer, better energy saving |
1.3 Модульный & 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)
| Элемент | CJ20 | CJX2 | Приложение |
| Heavy‑duty | Up to 630A, 315кВт | Max 95A, ~45kW | CJ20 for large industrial equipment |
| Breaking | Strong, for frequent/ reverse starting | Середина, normal duty | CJ20 for crushers, mills |
| Среда | Robust, dust/ heat resistant | Компактный, 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 (например, NR2)
Simpler installation & обслуживание, standard dimensions
3. Key Application Strengths
1. High‑power motors: 85кВт (160А) to 315kW (630А)
2. Частый запуск & reversing: до 1200 operations/hour
3. Long‑distance control in large plants, мины
4. Суровые условия: –25°C to +40°C, dust, вибрация
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.
