Contattore,interruttore automatico,inverter solare,contatore elettrico,batterie solari
Significato del modello & Basic Positioning
| Parte | Senso |
| CJ | Contattore CA (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. Parametri tecnici fondamentali
Prestazioni elettriche
| Articolo | Valore | Note |
| Corrente operativa nominale (AC‑3) | 160UN | Controls motor power 85kW at 380V |
| Conventional thermal current (Ith) | 200UN | Long‑time permissible current in free air |
| Tensione di isolamento nominale (Ui) | 690V | Maximum voltage withstand class |
| Rated operational voltage (Ue) | Up to 660V (50/60Hz) | 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 (50Hz) | Energy‑saving versions available |
| Rated operational frequency (AC‑3) | 1200 operazioni/ora | Typical for motor control |
| Making/breaking capacity | 10 × rated current (1S) | Withstands motor starting surge |
| Contatti ausiliari | Standard 2NO+2NC (expandable) | For control circuit signaling |
| Mechanical endurance | 10 milioni di operazioni | Electrical endurance (AC‑3): 1 milioni di operazioni |
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, facilità di installazione e manutenzione
Compatible with RT16‑315 fuse protection
3. Mounting Dimensions & Peso
| Articolo | Valore (mm) |
| Larghezza (UN) | 146 |
| Altezza (B) | 187 |
| Profondità (C) | 178 |
| Distanza tra i fori di montaggio | 130×130 (±0.5) |
| Mounting hole diameter | 9mm |
| Peso | Approx. 5.5kg |
Montaggio: Standard 35mm DIN rail or bolt fixing
4. Application & Selection Guide
Ambito di applicazione
1. CA 50/60 Hz, power circuits up to 660V
2. Remote switching on/off, frequent control of three‑phase asynchronous motors
3. Combined with thermal overload relays (per esempio., NR2 series) into magnetic starters for overload protection
4. Typical uses: tifosi, pumps, compressori, conveyors and other industrial equipment
Note sulla selezione
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, umidità, altitude)
5. International Brand Replacements
| Marca | Modello sostitutivo | Compatibilità |
| Siemens | 3RT2036‑1AP00 | Same current class, similar dimensions |
| ABB | A165‑30‑11 | 165UN, direct replacement |
| Schneider | LC1D15000M7C | 150UN, suitable for light loads |
| Schneider | LC1D18000M7C | 180UN, suitable for heavy loads |
| Eaton (Moeller) | DIL M175 | 175UN, high performance match |
6. Operation & Manutenzione
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
| Modello | Corrente nominale (UN) | Control Power (kW/380V) | Ith (UN) |
| 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 milioni di operazioni, 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 milioni di operazioni; CJ20‑250/400/630: 6 milioni di operazioni
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, potere di interruzione, 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 (1S), withstands heavy motor starting
Silver‑based alloy main contacts: low resistance, stable temperature rise
1.2 Long Mechanical & Electrical Endurance
| Serie | Mechanical Endurance (160UN) | Electrical Endurance (AC‑3) | Caratteristiche |
| 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 Modulare & 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)
| Articolo | CJ20 | CJX2 | Application |
| Heavy‑duty | Up to 630A, 315kW | Max 95A, ~45kW | CJ20 for large industrial equipment |
| Breaking | Strong, for frequent/ reverse starting | Medio, normal duty | CJ20 for crushers, mills |
| Ambiente | Robust, dust/ heat resistant | Compatto, clean environments | CJ20 for metallurgy, minerario |
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 (per esempio., NR2)
Simpler installation & maintenance, standard dimensions
3. Key Application Strengths
1. High‑power motors: 85kW (160UN) to 315kW (630UN)
2. Frequent starting & reversing: fino a 1200 operazioni/ora
3. Long‑distance control in large plants, mines
4. Harsh environments: –25°C to +40°C, polvere, vibrazione
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.
