Contactor,întrerupător de circuit,invertor solar,contor electric,baterii solare
Semnificația modelului & Basic Positioning
| Parte | Sens |
| CJ | Contactor AC (China Contactor) |
| 20 | Design No. (20th generation) |
| 160 | Rated operational current 160A (Categoria AC-3) |
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. Parametrii tehnici de bază
Performanță electrică
| Articol | Valoare | Note |
| Curent nominal de funcționare (AC-3) | 160O | Controls motor power 85kW at 380V |
| Curent termic convențional (Ith) | 200O | Long‑time permissible current in free air |
| Tensiunea nominală de izolație (Ui) | 690V | Maximum voltage withstand class |
| Tensiune nominală de funcționare (Ue) | Up to 660V (50/60Hz) | Gama de tensiune a circuitului principal |
| Control coil voltage | 110V/127V/220V/380V etc. | 220V and 380V are common |
| Consumul de energie al bobinei | Inrush 855VA, Holding 85.5VA (50Hz) | Energy‑saving versions available |
| Rated operational frequency (AC-3) | 1200 operațiuni/oră | Typical for motor control |
| Making/breaking capacity | 10 × curent nominal (1s) | Withstands motor starting surge |
| Contacte auxiliare | Standard 2NO+2NC (extensibil) | For control circuit signaling |
| Rezistenta mecanica | 10 milioane de operațiuni | Rezistenta electrica (AC-3): 1 milioane de operațiuni |
Mechanical Structure
Double‑break direct‑acting structure, stingere excelentă a arcului
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. Dimensiuni de montare & Greutate
| Articol | Valoare (mm) |
| Lăţime (O) | 146 |
| Înălţime (B) | 187 |
| Adâncime (C) | 178 |
| Distanța orificiilor de montare | 130×130 (±0,5) |
| Diametrul orificiului de montare | 9mm |
| Greutate | Aproximativ. 5.5kg |
Montare: Standard 35mm DIN rail or bolt fixing
4. Aplicație & Ghid de selecție
Domeniul de aplicare
1. AC 50/60Hz, power circuits up to 660V
2. Remote switching on/off, frequent control of three‑phase asynchronous motors
3. Combinat cu relee termice de suprasarcină (de ex., seria NR2) into magnetic starters for overload protection
4. Typical uses: fani, pompe, compresoare, conveyors and other industrial equipment
Note de selecție
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 (extensibil)
Consider operating frequency and environment (temperatură, umiditate, altitude)
5. International Brand Replacements
| Marca | Model de înlocuire | Compatibilitate |
| Siemens | 3RT2036‑1AP00 | Same current class, dimensiuni similare |
| ABB | A165‑30‑11 | 165O, înlocuire directă |
| Schneider | LC1D15000M7C | 150O, suitable for light loads |
| Schneider | LC1D18000M7C | 180O, potrivit pentru sarcini grele |
| Eaton (Moeller) | DIL M175 | 175O, high performance match |
6. Operațiunea & Întreţinere
1. Inspect integrity before installation, remove packaging
2. Ensure terminals are tightly secured to avoid overheating
3. Verificați regulat uzura contactelor; 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
| Model | Curent nominal (O) | Puterea de control (kW/380V) | Ith (O) |
| 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 milioane de operațiuni, the standard design index for no‑load cycles under normal conditions.
Additional Info
1. Rezistenta electrica: Under AC‑3 (controlul motorului), 1.2 million operations – lower due to arcing and contact wear
2. Series difference: CJ20‑10 ~ CJ20‑160: 10 milioane de operațiuni; CJ20‑250/400/630: 6 milioane de operațiuni
3. Life factors: Actual service life depends on frequency, mediu, 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, capacitatea de rupere, durability and compatibility, especially compared with CJX2, NC1 and CJ40 series.
1. Structural & Avantaje de performanță
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 (1s), withstands heavy motor starting
Silver‑based alloy main contacts: low resistance, stable temperature rise
1.2 Long Mechanical & Rezistenta electrica
| Serie | Rezistenta mecanica (160O) | Rezistenta electrica (AC-3) | Caracteristici |
| CJ20 | 10 milion | 1 milion | 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 Modular & Versatile
Independent auxiliary contacts: standard 2NO+2NC, extensibil
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)
| Articol | CJ20 | CJX2 | Aplicație |
| Greutate | Up to 630A, 315kW | Max 95A, ~45kW | CJ20 for large industrial equipment |
| Se rupe | Puternic, for frequent/ reverse starting | Mediu, datorie normală | CJ20 for crushers, mills |
| Mediu | Robust, dust/ heat resistant | Compact, clean environments | CJ20 for metallurgy, minerit |
2.2 vs NC1 (New Energy‑Saving)
Proven stable platform: decades of field use, rata scăzută de eșec, ideal for retrofit projects
AC/DC energy‑saving modules (≥63A): zgomot redus
Better price in same size
2.3 vs CJ40 (High‑Performance)
Wider compatibility with thermal relays (de ex., NR2)
Simpler installation & întreţinere, standard dimensions
3. Key Application Strengths
1. High‑power motors: 85kW (160O) to 315kW (630O)
2. Pornire frecventă & inversarea: până la 1200 operațiuni/oră
3. Long‑distance control in large plants, minele
4. Medii dure: –25°C to +40°C, praf, vibratie
Core Value of CJ20 Series
CJ20 stands out for maturity, fiabilitate, 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.
