China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies
China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies
China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies
China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies
China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies
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China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies
China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies
China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies
China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies
China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies

China CJX1 (3TB) Series AC Contactors 9-400A 380V AC-3 - Reliable China Suppliers and Factory for Electrical Solutions Supplier, Companies

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Enhance your electrical setup with the CJX1 (3TB) Series AC Contactor, a top choice among China suppliers for reliable control of AC motors and heavy-duty loads. This dependable device boasts a rated operational current capacity ranging from 9A to 400A at 380V (AC-and easily accommodates 50/60Hz frequencies while withstanding voltages from 690 to 1000V. Perfect for frequent switching operations, it expertly handles reversing control and circuit interruption. This series is trusted by manufacturers worldwide for its compliance with international quality standards, including IEC 947, VDE 0660, and GB 14048 specifications. Choose a factory that prioritizes quality and performance with the CJX1 (3TB) Series AC Contactor.

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Product Description

Operating Conditions
  • The altitude of the site of installation does not exceed 2000 meters above sea level.
  • The ambient air temperature: -25 ~ +55℃.
  • Relative humidity does not exceed 50% at +40℃ and 90% at +25℃.
  • Atmospheric conditions: the air does not contain any explosive medium, corrosive gases and conductive dust.
  • Never be shocked and vibrate obviously.
  • Never be wetted by rain and snow.
Technical Parameters
Type CJX1-9
3TB40		 CJX1-12
3TB41		 CJX1-16
3TB42		 CJX1-22
3TB43		 CJX1-32
3TB44
Rated insulation voltage (V) 660 660 660 660 660
Rated operational current (380V) (A) AC-3 9 12 16 22 32
AC-4 3.3 4.3 7.7 8.5 15.6
Rated outputs of three-phase motors at 50Hz (KW) AC-3 230/220V
400/380V
500V
690/660V
1000V		 2.4
4
5.5
5.5
-		 3.3
5.5
7.5
7.5
-		 4
7.5
10
11
-		 6.1
11
11
11
-		 8.5
15
21
23
-
AC-4 400/380V
690/660V		 1.4
2.4		 1.9
3.3		 3.5
6		 4
6.6		 7.5
13
Mechanical endurance (×10⁶) 10 10 10 10 10
Electrical endurance (×10⁶) AC-3 1.0 1.0 1.0 1.0 1.0
AC-4 0.2 0.2 0.2 0.2 0.2
Switching frequency (1/h) AC-3 1000 1000 750 750 750
AC-4 250 250 250 250 250
Coil voltage tolerance (0.8～1.1) Us
Power consumption of coil (50Hz) (AC) Closed (VA) 10 10 10 10 10
Power Factor (p.f.) 0.29 0.29 0.29 0.29 0.29
Closing (VA) 68 68 68 68 68
Power Factor (p.f.) 0.82 0.82 0.82 0.82 0.82
Convention thermal current (A) 20 20 30 30 45
Conventional thermal current of auxiliary contacts (A) 10 10 10 10 10
Rated operational current of auxiliary contacts (A) AC-15 380/220V 6-10 6-10 6-10 6-10 4-6
Weight (kg) 0.43 0.43 0.49 0.49 0.7
Order No. suffixes for rated control voltages for coils (AC)
3TF40…-0X□□
3TF44…-0X□□		 Coil for 50Hz
AC V		 Coil for 50Hz/60Hz
AC V
24   B0
42   D0
110   F0
220   M0
230   U0
380   Q0		 24   C1
42   D1
110   G1
220   P1
240   R1
Product Display
cjx2-d-ac-contactor-right-view
cjx2-d-ac-contactor-top-view
3TB40-3TB44 Outline and Installation Dimension
CJX2-D-4
Type a b c d e f g
3TB40, 3TB41 79 60 46 35 *90 / 106 7.5 Φ5
3TB42, 3TB43 89 75 46 35 116 8 Φ5
3TB44 90 75 74 50 109 8 Φ5
* Size 90 is suitable for 3TB4010, 3TB4001, 3TB4110, 3TB4101
Size 106 is suitable for 3TB4011, 3TB4022, 3TB4111, 3TB4122
Permissible Mounting Position

The contactors are designed for operation on vertical mounting surface.

CJX2-D-4
Frequently Asked Questions
What is the rated insulation voltage of the CJX1 / 3TB series AC contactor?
All models in the CJX1 / 3TB series (CJX1-9 through CJX1-32, i.e., 3TB40 to 3TB44) have a rated insulation voltage of 660V, making them suitable for a wide range of industrial power systems.
What are the permissible operating environmental conditions for the 3TB series contactor?
The contactor should be installed at an altitude not exceeding 2000 m above sea level, with an ambient temperature range of -25°C to +55°C. Relative humidity must not exceed 50% at +40°C or 90% at +25°C. The environment must be free from explosive media, corrosive gases, conductive dust, significant vibration, and exposure to rain or snow.
What is the coil voltage tolerance for the CJX1 / 3TB AC contactor?
The coil voltage tolerance is (0.8 ~ 1.1) Us, meaning the contactor can operate reliably within 80% to 110% of the rated coil supply voltage, ensuring stable performance under minor voltage fluctuations.
How do I select the correct coil voltage suffix when ordering a 3TB contactor?
When ordering, you can specify the coil voltage using the order number suffix. For example, for a 50Hz coil at 220V AC, use suffix "M0"; for a 50Hz/60Hz coil at 110V AC, use suffix "G1". Refer to the order suffix table in the Technical Parameters section for a full list of available coil voltages.
What is the mechanical and electrical endurance of the CJX1 / 3TB series contactor?
The mechanical endurance is 10 × 10⁶ operations for all models. The electrical endurance is 1.0 × 10⁶ operations under AC-3 duty and 0.2 × 10⁶ operations under AC-4 duty, ensuring long service life in demanding industrial applications.
What mounting orientation is required for the 3TB series AC contactor?
The 3TB series contactors are designed for installation on a vertical mounting surface. Correct mounting orientation is essential to ensure proper mechanical operation, reliable contact performance, and long-term durability of the device.

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