Contator CA CHINT CJ20-160

Significado do modelo & Posicionamento Básico

Papel	Significado
CJ	Contator 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. Parâmetros técnicos principais

Desempenho Elétrico

Item	Valor	Notas
Corrente operacional nominal (AC-3)	160UM	Controls motor power 85kW at 380V
Corrente térmica convencional (É)	200UM	Long‑time permissible current in free air
Tensão nominal de isolamento (interface do usuário)	690V	Maximum voltage withstand class
Tensão operacional nominal (Ué)	Up to 660V (50/60Hz)	Faixa de tensão do circuito principal
Control coil voltage	110V/127V/220V/380V etc.	220V and 380V are common
Consumo de energia da bobina	Inrush 855VA, Holding 85.5VA (50Hz)	Energy‑saving versions available
Rated operational frequency (AC-3)	1200 operações/hora	Typical for motor control
Making/breaking capacity	10 × corrente nominal (1é)	Withstands motor starting surge
Contatos auxiliares	Standard 2NO+2NC (expansível)	For control circuit signaling
Resistência mecânica	10 milhões de operações	Resistência elétrica (AC-3): 1 milhões de operações

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, fácil instalação e manutenção
Compatible with RT16‑315 fuse protection

3. Dimensões de montagem & Peso

Item	Valor (milímetros)
Largura (UM)	146
Altura (B)	187
Profundidade (C)	178
Mounting hole spacing	130×130 (±0,5)
Mounting hole diameter	9milímetros
Peso	Aprox.. 5.5kg

Montagem: Standard 35mm DIN rail or bolt fixing

4. Aplicativo & Guia de seleção

Escopo de aplicação
1. CA 50/60 Hz, power circuits up to 660V
2. Remote switching on/off, frequent control of three‑phase asynchronous motors
3. Combinado com relés de sobrecarga térmica (por exemplo, Série NR2) into magnetic starters for overload protection
4. Typical uses: fãs, bombas, compressores, conveyors and other industrial equipment

Notas de seleção
Para controle de motor, 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 (expansível)
Consider operating frequency and environment (temperatura, umidade, altitude)

5. International Brand Replacements

Marca	Modelo de substituição	Compatibilidade
Siemens	3RT2036‑1AP00	Same current class, similar dimensions
ABB	A165‑30‑11	165UM, substituição direta
Schneider	LC1D15000M7C	150UM, suitable for light loads
Schneider	LC1D18000M7C	180UM, suitable for heavy loads
Eaton (Moeller)	DIL M175	175UM, high performance match

6. Operação & Manutenção

1. Inspect integrity before installation, remove packaging
2. Ensure terminals are tightly secured to avoid overheating
3. Verifique regularmente o desgaste dos contatos; 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

Modelo	Corrente nominal (UM)	Poder de controle (kW/380V)	É (UM)
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 milhões de operações, the standard design index for no‑load cycles under normal conditions.

Additional Info
1. Resistência elétrica: Under AC‑3 (controle motor), 1.2 million operations – lower due to arcing and contact wear
2. Series difference: CJ20‑10 ~ CJ20‑160: 10 milhões de operações; CJ20‑250/400/630: 6 milhões de operações
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, capacidade de interrupção, durability and compatibility, especially compared with CJX2, NC1 and CJ40 series.

1. Structural & Vantagens de desempenho

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 (1é), withstands heavy motor starting
Silver‑based alloy main contacts: baixa resistência, stable temperature rise

1.2 Long Mechanical & Resistência Elétrica

Série	Mechanical Endurance (160UM)	Resistência Elétrica (AC-3)	Características
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 Modular & Versátil
Independent auxiliary contacts: standard 2NO+2NC, expansível
Compatible with RT16‑315 fuses and protection modules
35mm montagem em trilho DIN ou parafuso

2. Advantages vs Other CHINT Series

2.1 vs CJX2 (Economic Type)

Item	CJ20	CJX2	Aplicativo
Serviço Pesado	Up to 630A, 315kW	Max 95A, ~45kW	CJ20 for large industrial equipment
Breaking	Forte, for frequent/ reverse starting	Médio, dever normal	CJ20 for crushers, mills
Ambiente	Robusto, dust/ heat resistant	Compactar, clean environments	CJ20 for metallurgy, mineração

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): baixo ruído
Better price in same size

2.3 vs CJ40 (High‑Performance)
Wider compatibility with thermal relays (por exemplo, NR2)
Simpler installation & manutenção, standard dimensions

3. Key Application Strengths
1. Motores de alta potência: 85kW (160UM) to 315kW (630UM)
2. Frequent starting & reversing: até 1200 operações/hora
3. Long‑distance control in large plants, minas
4. Ambientes agressivos: –25°C to +40°C, pó, vibração

Core Value of CJ20 Series

CJ20 stands out for maturity, confiabilidade, 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.