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China CJS0t ZNFO AC Contactor Suppliers - High Voltage and Current Factory Solutions for Motor Starters
Advantage
All products of the company can be customized for production according to user usage scenarios.
Type and meaning
Type and meaning
The auxiliary code is composed of 5 parts, which are selected in the following order as needed:
1. In the first part, "Y" means general type; "N" (can be omitted) means reversible type;
2. In the second part, 1 digit is used to indicate the number of poles of the main circuit: 3 and 4 respectively indicate 3 and 4 poles, and 3 can be omitted;
3. In the third part, 2 digits are used to indicate the highest rated working voltage: “06” (which can be omitted) indicates 690V, “11” indicates 1140V;
4. The fourth part indicates the rated control power supply voltage with letter indicating alternating current 50Hz and "DC” indicating direct. The value of the rated control power supply voltage is behind the letters, but “AC380” can be omitted;
5. In the fifth part, the letter "g" and two digits are used together to indicate the type and number of auxiliary contacts, of which the first digit indicates the number of pairs of normally open auxiliary contacts and the second digit indicates the number of pairs of normally closed auxiliary contacts, but “□42" can be omitted.
Note: This item includes two parts, i.e., the number of main contacts and the number of auxiliary contacts, which are indicated by number respectively, as shown in the diagram below:
(-□□-□□) indicates: - number of normally open main contacts, number of normally closed main contacts - number of normally open auxiliary contacts, number of normally closed auxiliary contacts.
1. In the first part, "Y" means general type; "N" (can be omitted) means reversible type;
2. In the second part, 1 digit is used to indicate the number of poles of the main circuit: 3 and 4 respectively indicate 3 and 4 poles, and 3 can be omitted;
3. In the third part, 2 digits are used to indicate the highest rated working voltage: “06” (which can be omitted) indicates 690V, “11” indicates 1140V;
4. The fourth part indicates the rated control power supply voltage with letter indicating alternating current 50Hz and "DC” indicating direct. The value of the rated control power supply voltage is behind the letters, but “AC380” can be omitted;
5. In the fifth part, the letter "g" and two digits are used together to indicate the type and number of auxiliary contacts, of which the first digit indicates the number of pairs of normally open auxiliary contacts and the second digit indicates the number of pairs of normally closed auxiliary contacts, but “□42" can be omitted.
Note: This item includes two parts, i.e., the number of main contacts and the number of auxiliary contacts, which are indicated by number respectively, as shown in the diagram below:
(-□□-□□) indicates: - number of normally open main contacts, number of normally closed main contacts - number of normally open auxiliary contacts, number of normally closed auxiliary contacts.
Normal working conditions and installation conditions
- The altitude of the installation site should not exceed 2000m;
- The ambient air temperature should not be higher than +40℃ and not be lower than -5℃;
- When the highest temperature is +40℃, the relative humidity of the air on the installation site should not be higher than 50%; A higher relative humidity is allowed at a lower temperature; In the wettest month, the monthly average minimum temperature should not exceed +20℃, and the average maximum relative humidity should not exceed 90%. Measures should be taken for condensation on the product due to temperature change;
- The inclination between the installation surface and the vertical plane should not exceed ± 5°.
- Pollution level: level 3;
- The product should be installed in a place without obvious shaking, impact and vibration.
Structural features of the product
CJS0t-63~1000 AC contactor adopts the structure of open type, normal installation, direct acting and double breakpoints. The auxiliary contacts are installed on both sides of the main contact as independent components, which are electrically separated; The iron core is a U-shaped structure with the permanent air gap. The base is made of aluminum alloy die-casting (for CJS0t-6304 and above), which is installed by screws; But, the base of CJS0t-63~125 is made of unsaturated polyester glass fiber reinforced molding compound, which may be installed by screws or by “TH75” guide rail, with the advantages of high breaking capacity and high reliability, etc. The arc extinguishing chamber is made of arc resistant plastic and iron grid.
Outline and installation dimensions

Outline and installation dimensions of CJS0t-63~1000 AC contactor
| Product type | Outline dimensions | Installation dimensions | Installation rail | Installation area | |||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | C | a | b | φ | 380V | 660V | ||
| CJS0t-63-125 | 116 | 143 | 154 | 100 | 90 | 5.8 | Th75 | 20 | 40 |
| CJS0t-160-200 | 146 | 186 | 184 | 130 | 130 | 9 | 30 | 40 | |
| CJS0t-250 | 40 | 60 | |||||||
| CJSOt-315-400 | 190 | 235 | 230 | 160 | 150 | 9 | 40 | 60 | |
| CJSOt-500 | 50 | 70 | |||||||
| CJS0t-630-1250 | 245 | 345 | 288 | 210 | 180 | 11 | 0 | 0 | |
| CJS0t-63/4~125/4 | 143 | 143 | 154 | 128 | 90 | 5.8 | Th75 | 20 | 40 |
| CJSOt-63/4~200/4 | 187 | 186 | 184 | 170 | 130 | 9 | 30 | 40 | |
| CJS0t-250-4 | 40 | 60 | |||||||
| CJS0t-315/4~400/4 | 236 | 235 | 230 | 216 | 150 | 9 | 40 | 60 | |
| CJS0t-500/4 | 50 | 70 | |||||||
Main parameters and technical performance
| Type and specifications | Frame code | Ue (V) | Working Voltage | Ith (A) | Ie (A) under | Intermittent AC-2 | Periodic Working AC-3 | AC-4 | Pe (kW) under AC-3 | Ie (A) under different cycles |
|---|---|---|---|---|---|---|---|---|---|---|
| AC-1 | AC-4 | |||||||||
| CJS0t-63 | 125 | 690 | 220 | 80 | 80 | 63 | 63 | 63 | 18.5 | 80 |
| (Voltage 380V) | 380 | 30 | ||||||||
| CJS0t-80 | 660 | - | ||||||||
| 220 | 80 | 80 | 80 | - | ||||||
| 380 | - | |||||||||
| CJS0t-100 | 660 | 63 | 63 | 63 | 55 | |||||
| CJS0t-125 | 220 | 125 | 125 | 100 | 100 | 100 | 30 | 125 | ||
| 380 | - | |||||||||
| 660 | 80 | 80 | 80 | - | ||||||
| 220 | 125 | 125 | 125 | - | ||||||
| 380 | 10 | - | ||||||||
| 660 | 80 | 80 | 80 | - | ||||||
| CJS0t-160 | 250 | 690 | 220 | 250 | 250 | 160 | 160 | 160 | 45 | 250 |
| CJS0t-200 | 380 | 75 | ||||||||
| 660 | 125 | 125 | 125 | 110 | ||||||
| CJS0t-250 | 220 | 200 | 200 | 200 | 55 | |||||
| 380 | 90 | |||||||||
| 660 | 125 | 125 | 125 | 110 | ||||||
| 220 | 250 | 250 | 250 | 75 | ||||||
| 380 | 225 | 132 | ||||||||
| 660 | 125 | 125 | 125 | 110 | ||||||
| CJS0t-315 | 500 | 690 | 220 | 500 | 500 | 315 | 315 | 315 | 90 | 500 |
| CJS0t-400 | 380 | 250 | 160 | |||||||
| 660 | 300 | |||||||||
| CJS0t-500 | 220 | 400 | 400 | 400 | 110 | |||||
| 380 | 315 | 220 | ||||||||
| 660 | 315 | 315 | 300 | |||||||
| 220 | 500 | 500 | 500 | 150 | ||||||
| 380 | 400 | 280 | ||||||||
| 660 | 315 | 315 | 315 | 300 | ||||||
| CJS0t-630 | 1000 | 690 | 220 | 800 | 630 | 630 | 630 | 630 | 200 | 630 |
| CJS0t-800 | 380 | 500 | 335 | |||||||
| CJS0t-1000 | 660 | 500 | 500 | 500 | 475 | |||||
| 220 | 800 | 800 | 800 | 800 | 250 | 800 | ||||
| 380 | 630 | 450 | ||||||||
| CJS0t-1250 | 1250 | 660 | 500 | 500 | 500 | 475 | ||||
| 220 | 1000 | 1000 | 1000 | 1000 | 1000 | 360 | 1000 | |||
| 380 | 550 | |||||||||
| 660 | 630 | 630 | 500 | 570 | ||||||
| 220 | 1250 | 1250 | 1250 | 1250 | 1250 | 375 | 1250 | |||
| 380 | 600 | |||||||||
| 660 | 800 | 800 | 600 | 630 | ||||||
| CJS0t 125/11 | 1250 | 1140 | 1140 | 125 | 125 | 40 | 40 | 40 | 55 | 125 |
| CJS0t-250/11 | 250 | 1140 | 250 | 250 | 80 | 80 | 80 | 110 | 250 | |
| CJS0t-500/11 | 500 | 1140 | 500 | 500 | 160 | 160 | 160 | 220 | 500 | |
| CJSOt-1000/11 | 1000 | 1140 | 1000 | 1000 | - | 400 | - | 600 | 1000 |
Frequently Asked Questions
Can the CJS0t series AC contactors be customized?
Yes, all products of the company can be customized and manufactured according to specific user usage scenarios and application requirements.
What are the altitude limitations for installing these contactors?
The altitude of the installation site for the CJS0t series AC contactor should not exceed 2000 meters.
What are the ambient temperature requirements for normal operation?
The contactor is designed to operate in ambient air temperatures between a minimum of -5℃ and a maximum of +40℃.
How does relative humidity affect the installation site?
At +40℃, relative humidity should not exceed 50%. However, higher humidity is permitted at lower temperatures, up to a monthly average maximum of 90% in the wettest month (with a minimum temperature not exceeding +20℃). Measures must be taken to prevent condensation.
What mounting options are available for CJS0t-63~125 models?
For the CJS0t-63~125 models, the base is made of unsaturated polyester glass fiber reinforced molding compound, allowing installation via screws or on a standard "TH75" guide rail.
What are the structural features of the arc extinguishing chamber?
The arc extinguishing chamber is constructed using arc-resistant plastic and an iron grid, providing high breaking capacity and enhanced operational reliability.


















