When the control circuit is energized, the contactor is closed, and the upper main contact connected in the current-limiting resistance line is connected before the lower main contact, so as to suppress the inrush current. After the completion of the instant disconnection reset, the lower main contact enters Normal work, but when the circuit is disconnected, it is completed by the lower main contact, and each performs its own duties. Because the current-limiting resistor is connected instantaneously, it will not cause long-term power waste and burn resistance.

1. The altitude of the installation site should not exceed 2000m;
2. The upper limit of the ambient air temperature should not exceed +40℃, and the lower limit should not be lower than -5℃;
3. The relative humidity of the installation site should not exceed +40℃ No more than 50%, higher relative humidity can occur at lower temperatures, the monthly average minimum temperature of the wettest month does not exceed +20℃, and the average maximum relative humidity of the month does not exceed 90%, due to temperature changes occurring in the product Measures must be taken for the condensation on the
surface ; 4. Installation conditions: The installation tilt to the vertical surface should not exceed ±5 °;

1. The contactor is equipped with a current-limiting resistor, which can suppress the closing inrush current within the allowable range;
2. The contactor is a direct-acting double-breakpoint structure, with flexible action mechanism, convenient manual inspection and compact structure;
3. Contactor terminal It is covered by an insulating cover, which is safe and reliable;
4. The contactor can be fastened with screws, or it can be buckled on a 35mm or 75mm standard mounting rail;

1. The altitude should not exceed 2500 meters.
2. The ambient temperature is -25℃~+50℃.
3. The air humidity does not exceed 50% at 40°C, and does not exceed 90% at 20°C.
4. The surrounding environment has no corrosive gas, no conductive dust, and no flammable and explosive media.
5. There is no severe vibration at the installation site.
6. The voltage distortion rate of the operating environment does not exceed 5%, otherwise the reactor must be connected in series.

The ZUFK-T composite switching switch adopts advanced single-chip detection technology to achieve precise control of the relay's rapid closing at the voltage zero point and rapid disconnection at the current zero point, thereby improving the switching speed and compensation effect, and improving the anti-harmonic ability . Due to the use of magnetic latching relays, the device only consumes electricity at the moment of switching action, and does not consume electricity at ordinary times, which truly achieves the purpose of energy saving and consumption reduction. The input signal and the device have photoelectric isolation, strong anti-interference ability, safe and reliable operation.

Main technical parameters
1. Rated voltage: 400/230V±20%
2. Switch withstand voltage: ≥2000V
3. Switch voltage drop: ≤0.05V

Working conditions
1. Working temperature: -25℃~55℃ Storage and transportation temperature: -40℃~85℃;
2. Relative humidity: 5%-95%, non-condensing;
3. Atmospheric pressure: 80kPa-110kPa;

Operating conditions 3.1 Ambient air temperature: -25℃~+50℃, and the average temperature within 24h is not higher than +35℃;
3.2 When the temperature is +25℃, the relative humidity can reach 100% in a short time;
3.3 The altitude does not exceed 2000m ；

Main technical parameters
Rated voltage: 400V (230V)
Rated frequency: 50Hz
Control capacity: three-phase capacitor 1Kvar~80Kvar, single-phase capacitor 1Kvar~20Kvar

The B30C series contactor is another special contactor for on-off capacitors derived from the B series AC contactor. It is the latest product produced by our factory. Its structure is different from the ordinary switching capacitor contactor. The resistance switching circuit part is on both sides of the main circuit part, and a discharge device is attached. When the capacitor is withdrawn from the power grid, the discharge device is connected to the capacitor, which can make the residual in the capacitor. The voltage drops below 50V within 30s, meeting the requirements of the latest 3C certification standards for low-voltage reactive power compensation devices. Users can save external discharge devices, thereby reducing costs. Its structural design is reasonable and novel, and it is a new type of dedicated switch that is currently vigorously promoted. Capacitor contactor.

1. Ambient air temperature: the upper limit is +40℃, the average value within 24h does not exceed +35℃, and the lower limit is -5℃;
2. Altitude: the altitude of the contactor installation site does not exceed 2000m;
3. Humidity: contactor installation The relative humidity of the air at the location does not exceed 50% when the temperature is +40℃, the average minimum temperature of the wettest month does not exceed +25℃, and the average maximum relative humidity of the month does not exceed 90%;
4. Pollution level: Level 3;
5 , Installation category: Class III;

The AC contactor has the advantages of small size, light weight, long life, low power consumption, and can be combined and derived as required. It can be equipped with building block auxiliary contact groups, air delay heads, mechanical interlocking mechanisms and other accessories to form a delay contactor, Star-delta starter, and can be directly plugged into and installed with thermal overload relay to form an electromagnetic starter. The product can be installed with screws, and can also be installed with 35mm (75mm) standard rails.