Contattore CA CHINT CJ20-160

Significato del modello & Posizionamento di base

Parte	Senso
CJ	Contattore CA (China Contactor)
20	Design No. (20quinta generazione)
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. È conforme a 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
Tensione operativa nominale (Ue)	Fino a 660 V (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	Tipico per il controllo motorio
Making/breaking capacity	10 × rated current (1S)	Withstands motor starting surge
Contatti ausiliari	Standard 2NO+2NC (espandibile)	For control circuit signaling
Resistenza meccanica	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. Dimensioni di montaggio & 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	ca. 5.5kg

Montaggio: Standard 35mm DIN rail or bolt fixing

4. Applicazione & Guida alla selezione

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. Combinato con relè termici (per esempio., Serie NR2) into magnetic starters for overload protection
4. Typical uses: tifosi, pompe, 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 (espandibile)
Consider operating frequency and environment (temperatura, umidità, altitude)

5. International Brand Replacements

Marca	Modello sostitutivo	Compatibilità
Siemens	3RT2036‑1AP00	Same current class, dimensioni simili
ABB	A165‑30‑11	165UN, sostituzione diretta
Schneider	LC1D15000M7C	150UN, suitable for light loads
Schneider	LC1D18000M7C	180UN, adatto per carichi pesanti
Eaton (Moeller)	DIL M175	175UN, high performance match

6. Operazione & 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. Intervallo di tensione della bobina: 85%–110% of rated value

7. CJ20 Series Model List

Modello	Corrente nominale (UN)	Controllare il potere (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 (controllo motorio), 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 & Vantaggi prestazionali

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 & Resistenza elettrica

Serie	Resistenza meccanica (160UN)	Resistenza elettrica (AC‑3)	Caratteristiche
CJ20	10 milioni	1 milioni	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, espandibile
Compatible with RT16‑315 fuses and protection modules
35Montaggio su guida DIN o bulloni da mm

2. Advantages vs Other CHINT Series

2.1 vs CJX2 (Economic Type)

Articolo	CJ20	CJX2	Applicazione
Pesante	Up to 630A, 315kW	Max 95A, ~45kW	CJ20 for large industrial equipment
Breaking	Forte, 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): basso rumore
Better price in same size

2.3 vs CJ40 (High‑Performance)
Wider compatibility with thermal relays (per esempio., NR2)
Simpler installation & manutenzione, standard dimensions

3. Key Application Strengths
1. High‑power motors: 85kW (160UN) to 315kW (630UN)
2. Avvio frequente & retromarcia: fino a 1200 operazioni/ora
3. Long‑distance control in large plants, miniere
4. Ambienti difficili: –25°C to +40°C, polvere, vibrazione

Core Value of CJ20 Series

CJ20 stands out for maturity, affidabilità, 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.