CHINT CJ20-160 AC Contactor

모델 의미 & Basic Positioning

Part	의미
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. 핵심 기술 매개변수

전기적 성능

목	값	메모
Rated operational current (AC‑3)	160에이	Controls motor power 85kW at 380V
Conventional thermal current (Ith)	200에이	Long‑time permissible current in free air
Rated insulation voltage (우이)	690다섯	Maximum voltage withstand class
Rated operational voltage (Ue)	Up to 660V (50/60헤르츠)	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 (50헤르츠)	Energy‑saving versions available
Rated operational frequency (AC‑3)	1200 operations/hour	Typical for motor control
Making/breaking capacity	10 × rated current (1에스)	Withstands motor starting surge
보조 접점	Standard 2NO+2NC (expandable)	For control circuit signaling
Mechanical endurance	10 백만 개의 작업	Electrical endurance (AC‑3): 1 백만 개의 작업

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 & 무게

목	값 (mm)
너비 (에이)	146
키 (B)	187
깊이 (기음)	178
Mounting hole spacing	130×130 (±0.5)
Mounting hole diameter	9mm
무게	대략. 5.5kg

Mounting: Standard 35mm DIN rail or bolt fixing

4. Application & Selection Guide

Scope of Application
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 (예를 들어, NR2 series) into magnetic starters for overload protection
4. Typical uses: 팬, pumps, 압축기, 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, 고도)

5. International Brand Replacements

상표	Replacement Model	호환성
지멘스	3RT2036‑1AP00	Same current class, similar dimensions
씨줄	A165‑30‑11	165에이, direct replacement
슈나이더	LC1D15000M7C	150에이, suitable for light loads
슈나이더	LC1D18000M7C	180에이, suitable for heavy loads
Eaton (Moeller)	DIL M175	175에이, high performance match

6. Operation & Maintenance

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

모델	정격전류 (에이)	Control Power (kW/380V)	Ith (에이)
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 백만 개의 작업, 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 백만 개의 작업; CJ20‑250/400/630: 6 백만 개의 작업
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, breaking capacity, 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 (1에스), withstands heavy motor starting
Silver‑based alloy main contacts: low resistance, stable temperature rise

1.2 Long Mechanical & Electrical Endurance

시리즈	Mechanical Endurance (160에이)	Electrical Endurance (AC‑3)	특징
CJ20	10 million	1 million	Full series 10M (250A+: 6중)
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)

목	CJ20	CJX2	Application
Heavy‑duty	Up to 630A, 315kW	Max 95A, ~45kW	CJ20 for large industrial equipment
Breaking	Strong, for frequent/ reverse starting	중간, 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 (예를 들어, NR2)
Simpler installation & 유지, standard dimensions

3. Key Application Strengths
1. High‑power motors: 85kW (160에이) to 315kW (630에이)
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.