Product Introduction

1、 Scope of application

The CJX2 (LC1) series AC contactor (hereinafter referred to as the contactor) is mainly used in circuits with AC 50Hz (or 60Hz), voltage up to 660V, and rated working current up to 95A under AC-3 and 400V (380V) usage categories. It is used for remote connection and disconnection of circuits, frequent starting and control of AC motors, and can be combined with appropriate thermal relays to form an electromagnetic starter to protect circuits that may experience operational overload.
The CJX2 (LC1) series AC contactor complies with IEC60947-4-1 and GB14048.4 standards.

Schneider LC1 AC contactor model	Taixi CJX2 AC contactor model
LC1-D09M7C	CJX2-09
LC1-D12M7C	CJX2-12
LC1-D18M7C	CJX2-18
LC1-D25M7C	CJX2-25
LC1-D32M7C	CJX2-32
LC1-D40M7C	CJX2-40
LC1-D50M7C	CJX2-50
LC1-D65M7C	CJX2-65
LC1-D80M7C	CJX2-80
LC1-D95M7C	CJX2-95

2、 Model meaning

一些常见的型号有： CJX2-0910 CJX2-0901 CJX2-1210 CJX2-1201 CJX2-1810 CJX2-1801 CJX2-2501 CJX2-2510 CJX2-3201 CJX2-3210 CJX2-4011 CJX2-5011 CJX2-6511 CJX2-8011 CJX2-9511

3、 Normal working conditions and installation conditions

1. The ambient air temperature ranges from -5 ℃ to+40 ℃, with an average value not exceeding+35 ℃ within 24 hours;
2. Altitude: not exceeding 2000m;
3. Atmospheric conditions: The relative temperature of the atmosphere does not exceed 50% at+40 ℃, and the relative humidity can be relatively high at lower temperatures. The average lowest temperature of the wettest month does not exceed+25 ℃, and the average maximum relative humidity of that month does not exceed 90%. And consider condensation on the product due to temperature changes;
4. Pollution level: Level 3;
5. Installation category: Class III;
6. Installation conditions: The inclination angle between the installation surface and the vertical surface shall not exceed ± 5 °;
7. Impact vibration: The product should be installed and used in a place without significant shaking, impact, and vibration.
8. Installation method: In addition to installing with screws, contactors can also be installed with 35mm standard card rails. Communication operation 40-95 can be installed with 35mm or 75mm card rails;

4、 Main parameters and technical performance

4.1 Main parameters and technical performance indicators of JCX2 AC contactor (see Table 1).

model			CJX2-09		CJX2-12		CJX2-18		CJX2-25		CJX2-32		CJX2-40		CJX2-50		CJX2-65		CJX2-80		CJX2-95
Rated work Current (A)	380/400V	AC-3	9		12		18		25		32		40		50		65		80		95
		AC-4	3.5		5		7.7		8.5		12		18.5		24		28		37		44
	600/690V	AC-3	6.6		8.9		12		18		21		34		39		42		49		49
		AC-4	1.5		2		3.8		4.4		7.5		9		12		14		17.3		21.3
Agreed free air heating current (A)			20		20		32		40		50		60		80		80		95		95
Rated insulation voltage (V)			690
Controllable three-phase squirrel cage Motor power （AC-3）kW		220/230V	2.2		3		4		5.5		7.5		11		15		18.5		22		25
		380/400V	4		5.5		7.5		11		15		18.5		22		30		37		45
		660/690V	5.5		7.5		10		15		18.5		30		37		37		45		45
Operating frequency (times/h)	Electrical life	AC-3	1200		1200		1200		1200		600		600		600		600		600		600
		AC-4	300
	mechanical life		3600
Electrical life (Ten thousand times)	AC-3		100		100		100		100		80		80		60		60		60		60
	AC-4		20		20		20		20		20		15		15		15		10		10
Mechanical lifespan (10000 cycles)			1000		1000		1000		1000		800		800		800		800		600		600
Distribution fuse model			RT16-20		RT16-20		RT16-32		RT16-40		RT16-50		RT16-63		RT16-80		RT16-80		RT16-100		RT16-125
Cold pressed end		root	1	2	1	2	1	2	1	2	1	2	1	2	1	2	1	2	1	2	1	2
	Non prefabricated end flexible wire	mm²	1/2.5	1/2.5	1/2.5	1/2.5	1.5/4	1.5/4	1.5/4	1.5/4	2.5/6	2.5/6	6/25	4/10	6/25	4/10	6/25	4/10	10/35	6/16	10/35	6/16
	There are prefabricated end flexible cords available		1/4	1/2.5	1/4	1/2.5	1.5/6	1.5/4	1.5/10	1.5/6	2.5/10	2.5/6	6/25	4/10	6/25	4/10	6/25	4/10	10/35	6/16	10/35	6/16
	Non prefabricated end hard wire		1/4	1/4	1/4	1/4	1.5/6	1.5/6	1.5/6	1.5/6	2.5/10	2.5/10	6/25	4/10	6/25	4/10	6/25	4/10	10/35	6/16	10/35	6/16
Communication coil power	50Hz	Absorption (VA)	70		70		70		110		110		200		200		200		200		200
		Maintain (VA)	9.0		9.0		9.5		14.0		14.0		57.0		57.0		57.0		57.0		57.0
		Power (W)	1.8~2.7		1.8~2.7		3~4		3~4		3~4		6~10		6~10		6~10		6~10		6~10
Action range			The suction voltage is 85% Us~110Us; Release voltage: 20% Us~75Us
Basic parameters of auxiliary contacts			AC-15:le:0.95A 380V/400V ； DC-13:le:0.15A 220V/250V lth:10A

4.2. Electrical life curve.

3. Rated control power supply voltage Us and code for the coil (see Table 2).

Coil voltage Us (V)

24

36

42

48

110

127

220

230

240

380

400

415

440

480

600

50Hz

B5

C5

D5

E5

F5

G5

M5

P5

U5

Q5

V5

N5

R5

T5

X5

60Hz

B6

C6

D6

E6

F6

G6

M6

P6

U6

Q6

V6

N6

R6

T6

X6

50Hz/60Hz

B7

C7

D7

E7

F7

G7

M7

P7

U7

Q7

V7

N7

R7

T7

X7

structural characteristics

1. The contactor is protective, with a direct acting structure and double break contacts. It has the characteristics of small size, light weight, low power consumption, long service life, safety and reliability;

2. Contactors can be used to form mechanical reversible interlocking magnetic starters, star delta pressure reducing starters, and can also be combined with various derivative series products such as auxiliary contact groups and air delay heads according to user selection.

3. Auxiliary contact groups, air delay heads (with delay ranges shown in Table 4), thermal relays, and other accessories can be installed in a modular manner to form various derivative products (see Table 3).

4. The SR2 series surge suppressor has significant surge pulse suppression function, and when used in conjunction with the CJX2 series contactor, it can effectively protect the contactor and extend its service life. And it can avoid the interference of surge pulses on related electronic control systems such as PCs.

SR2-A is used for CJX2 series 09A~22A AC contactors, with specific specifications including:

SR2-A 24V~48V AC、DC

SR2-A 100V~250V AC、DC

SR2-A 380V~440V AC、DC

SR2-B is used for CJX2 series 40A~95A AC contactors, with specific specifications including:

SR2-B 100V~127V AC、DC

SR2-B 200V~250V AC、DC

SR2-B 380V~440V AC、DC

5. Contactors have the characteristics of small size, light weight, low power consumption, high lifespan, safety and reliability.

6. The contactor body has a pair of normally open or normally closed auxiliary contacts at 32A and below, and a pair of normally open and normally closed auxiliary contacts at 40A and above. In addition, F4 auxiliary contact groups (two or four groups) or air delay heads can be installed on the top, and NCF1-11C can be installed on both sides for their combination (see Tables 4 and 5).

7. In addition to screw installation, contactors can also be installed with 35mm (CJX2-09~95) and 75mm (CJX2-40~95) concave standard card rails.

model	Delay range	Number of delayed contacts	Simplified diagram	Table 4
F5-T0	0.1s~3s	NO+NC
F5-T2	0.1s~30s
F5-T4	10s~180s
F5-D0	0.1s~3s
F5-D2	0.1s~30s
F5-D4	10s~180s

Note: A, B, C, and D printed on the product body indicate the trend of delay time.

auxiliary contact group model	Number of contacts		Simplified diagram
	Number of normally open (NO) contacts	Number of normally closed (NC) contacts
F4-20	2	0
F4-11	1	1
F4-02	0	2
F4-40	4	0
F4-31	3	1
F4-22	2	2
F4-12	1	3
F4-04	0	4
NCF1-11C	1	1

Installation and Maintenance

1. Relevant technical data should be checked before installation.
During installation, it should be installed according to the prescribed conditions and in line with human visual habits.
3. Contactors with metal mounting plates should be properly grounded.
4. The terminal screws should be tightened. After checking that the wiring is correct, the attraction coil should be powered on and off several times when the main contact is not energized. The test action should be reliable before it can be put into use.
5. If abnormal noise is found during use, it may be due to dirt on the pole surface of the iron core. Please wipe the pole surface clean.
During use, it is necessary to regularly inspect all components of the product, ensuring that the movable parts are not stuck and the fasteners are not loose. If any parts are damaged, they should be replaced in a timely manner.

Use connection method

Generally, a three-phase contactor has a total of 8 points, three inputs, three outputs, and two control points. The output and input are corresponding and can be easily seen. If self-locking is to be added, the wire needs to be connected from one terminal of the output point to the control point.
Firstly, one should understand the principle of AC contactors. He uses an external power source to apply to the coil, generating an electromagnetic field. When powered on, the contact point will disconnect when the power is cut off. After understanding the principle, you should figure out the contacts of the external power supply, which are the two contacts of the coil, usually located at the bottom of the contactor and on each side. The other inputs and outputs are usually located in the upper part, which is obvious at a glance. Also pay attention to the voltage of the external power supply (220V or 380V), which is usually indicated. And pay attention to whether the contact point is normally closed or normally open. If there is a self-locking control, just follow the principle to organize the circuit.
When the coil is energized, the static iron core generates electromagnetic attraction, which attracts the moving iron core. As the contact system is linked with the moving iron core, the moving iron core drives three moving contact pieces to run simultaneously, closing the contacts and connecting the power supply. When the coil is powered off, the suction force disappears, and the linkage part of the moving iron core separates by the reaction force of the spring, causing the main contact to disconnect and cutting off the power supply.

Appearance and installation dimensions

The appearance and installation dimensions of the product (see Figure 1, Figure 2, and Table 6).

Size: mm

Contactor model	A max	B max	C max	D max	E max	a	b	φ
CJX2-09~12	47	76	82	120.5	140.5	34/35	50/60	4.5
CJX2-18	47	76	87	125.5	145.5	34/35	50/60	4.5
CJX2-25	57	86	95	133.5	153.5	40	48	4.5
CJX2-32	57	86	100	138.5	158.5	40	48	4.5
CJX2-4011~6511	77	129	116	154.5	174.5	40	105	6.5
CJX2-4004~6504	84	129	116	154.5	174.5	40	105	6.5
CJX2-4008~9511	84	129	127	154.5	174.5	40	105	6.5
CJX2-8011~9511	87	129	127	165.5	185.5	40	105	6.5
CJX2-8004~9504	96	129	122	160.5	180.5	40	105	6.5
CJX2-8008~9508	96	129	135	160.5	180.5	40	105	6.5