China CJX8(B) AC Contactor 690V 370A - Reliable Suppliers from Factory for Motor Control and Protection
Type and meaning
Structural features of the product
AC contactors of CJX8-30 and below adopt the “normal installation structure", that is, the contact system is at the front, and this system is at the back (near the installation surface: CiX8-37 and above adopt the "inverted structure", that is. the magnetic system is at the front and the main contact system is at the back.
The moving contact is of bridge structure.For CIX8-105 and above, the main static contact can be separated from the main wiring, so it is not necessary to disassemble the main conductor when replacing the contact.For CIX8-9-25, there are four pairs of contacts (three pairs of main contacts and one pair of auxiliary contacts or four pars of main contacts).For CiX8-30 and above, the moving contact bracket is provided with three moving contacts, and the number of main contacts cannot be increased.
CIX8-9~CJX8-25 AC contactor adopts enclosed natural arc extinguishing, C]X8-30-45 adopts ferromagnetic sheet for arc extinguishingCJX8-65 and above adopt ferromagnetic grid for arc extinguishing. All products adopt arc-resistant plastic arc chambers.
CJX8-9~CJX8-30 AC contactor can be quickly installed on the 35mm installation rail conforming to IEC standards.This series of contactors can be provided with different types of auxiliary contacts to increase the convenience of use (see table).
Executive standards:IEC60947-4-1,VDE0660,NFC63-110,NBNC63158,CE117-3,BS5425,NE50012,.GB14048. 4-2003
Main parameters and technical performance
Main parameters and technical performance indicators of the contactor
| Contactor type | CJX8- 9 | CJX8- 12 | CJX8- 16 | CJX8- 25 | CJX8- 30 | CJX8- 37 | CJX8- 45 | CJX8- 65 | CJX8- 85 | CJX8- 105 | CJX8- 170 | CJX8- 250 | CJX8- 370 | |
Rated insulation voltage V |
690 | |||||||||||||
Conventional thermal Current A |
16 | 20 | 25 | 40 | 45 | 45 | 60 | 80 | 100 | 170 | 250 | 330 | 410 | |
| Rated working current of AC3(A) | 400V | 9 | 12 | 16 | 25 | 30 | 37 | 45 | 65 | 85 | 105 | 170 | 250 | 370 |
| 690V | 3.5 | 4.9 | 6.7 | 13 | 17.5 | 21 | 25 | 45 | 55 | 82 | 118 | 170 | 268 | |
| Rated control power of AC3(KW) | 400V | 4 | 5.5 | 7.5 | 11 | 15 | 18.5 | 22 | 33 | 45 | 55 | 90 | 132 | 200 |
| 690V | 3 | 4 | 5.5 | 11 | 15 | 18.5 | 22 | 40 | 50 | 75 | 110 | 160 | 250 | |
| Coil power(VA/W) | Starting | 60/50 | 60/50 | 60/50 | 85/65 | 85/65 | 175/125 | 175/125 | 270/130 | 270/130 | 510/280 | 750/460 | 1100/600 | 1900/850 |
| Holding | 9/2.2 | 9/2.2 | 9/2.2 | 10/3 | 10/3 | 22/5 | 22/5 | 30/8 | 30/8 | 32/9 | 60/15 | 66/16 | 100/27 | |
| Coil voltage V | AC | 24、36、48、110、127、230、400、415 | ||||||||||||
| DC | 24、48、110、220 | |||||||||||||
| Type and number of auxiliary contacts available | (0~4个)CA7 | ( 0 ~ 4 个 ) C A 7 | (0~4个)CA11 | |||||||||||
Outline and installation dimensions
Fig.1 Outline and installation dimensions of CJX8-16
Fig.2 Outline and installation dimensions of CJX8-25
Fig.4 Installation rail for CJX8-9~30
Fig.5 Outline and installation dimensions of CJX8-37~45
Fig.5 Outline and installation dimensions of CJX8-37~45
Fig.6 Outline and installation dimensions of CJX8-65~85
Fig.7 Outline and installation dimensions of CJX8-105~370 (see table)
| Type | A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|---|
| CJX8-105 | 118max | 154max | 137max | 140±0.5 | 35±0.31 | Φ6.5+018 | Φ6.5±0.2 | ≥15 |
| CJX8-170 | 134max | 165max | 152max | 150±0.5 | 40±0.31 | 6+0.3 | 7.5±0.36 | ≥15 |
| CJX8-250 | 166max | 206max | 192max | 190±0.575 | 50±0.31 | 7±0.29 | 8.5±0.29 | ≥15 |
| CJX8-370 | 202max | 252max | 221max | 220±0.575 | 60±0.31 | 7±0.29 | 8.5±0.29 | ≥15 |
Frequently Asked Questions (FAQ)
What is the difference in structure between CJX8-30 and CJX8-37 AC contactors?
AC contactors of CJX8-30 and below adopt the "normal installation structure" with the contact system at the front and the magnetic system at the back. In contrast, CJX8-37 and above adopt the "inverted structure" where the magnetic system is at the front and the main contact system is at the back.
Is it necessary to disassemble the main conductor when replacing contacts on larger CJX8 models?
No, for CJX8-105 and above, the main static contact can be separated from the main wiring. This design makes it unnecessary to disassemble the main conductor when replacing the contacts.
What arc extinguishing methods are used in the CJX8 series?
CJX8-9 to CJX8-25 use enclosed natural arc extinguishing; CJX8-30 to 45 use ferromagnetic sheets; and CJX8-65 and above utilize ferromagnetic grids. Additionally, all products feature arc-resistant plastic arc chambers.
Can these AC contactors be mounted on standard DIN rails?
Yes, CJX8-9 to CJX8-30 AC contactors are designed for quick installation on standard 35mm installation rails conforming to IEC standards.
Which international standards do the CJX8 series AC contactors comply with?
The series complies with multiple standards including IEC60947-4-1, VDE0660, NFC63-110, NBNC63158, CE117-3, BS5425, NE50012, and GB14048.4-2003.