Explosion-proof electromagnetic starter and explosion-proof circuit breaker What is the difference?

Whether they are explosion-proof circuit breakers or explosion-proof electromagnetic starters, they all have the ability to turn on and off the control circuit. The biggest difference between them is the ability to break the line control.

Many of our explosion-proof electrician salesmen have a very vague concept because of the professional relationship between explosion-proof circuit breakers and explosion-proof electromagnetic starters. They think that they are all able to control the on and off of circuits. They actually don’t understand what's in between them. The difference is to give everyone a brief introduction today and explain their respective meanings.

First, what is the explosion-proof circuit breaker? What are the features?

First of all, to understand the characteristics of explosion-proof circuit breakers:

1. The shell of this product adopts aluminum alloy die-casting molding, and the surface is electrostatically sprayed after high-speed shot blasting. The appearance is beautiful;

2. This product is a compound type explosion-proof structure, the switch box adopts the explosion-proof structure, and the connection box adopts the increased safety structure;

3. Adopt modular design, various circuits can be freely combined;

4. Built-in high-breakage small residual current circuit breakers or molded case type leakage circuit breakers, which can be opened and closed by operating the explosion-proof external body handle;

5. This product fully introduces a new type of optimized design scheme and operating mechanism. The structure is compact and reasonable, versatility, flexible and convenient operation, feel good;

6. With overload, short circuit, phase loss, leakage protection;

7. All fasteners are made of 304 stainless steel with strong corrosion resistance;

8. The wiring mode, steel pipe or cable, explosion-proof hose can be;

9. Can be customized according to user requirements;

Simply speaking, the explosion-proof circuit breaker is used to protect the circuit. When the load is short-circuited or over-current, it can quickly cut off the circuit to prevent the expansion of the fault. Of course, it can also be used as a normal open-close switch.

Second, what is the explosion-proof electromagnetic starter? What are the features? What are the characteristics?

Explosion-proof electromagnetic starter features:

1. Aluminum alloy shell die-casting or steel plate welding, high-pressure surface electrostatic spray, beautiful appearance;

2. The AC contactor, thermal relay, motor protector, signal lamp and other components can be installed according to customer requirements;

3. With overload and short circuit protection;

4. Module structure, various circuits can be freely assembled according to needs;

5. Can control AC 50HZ, 380V three-phase asynchronous motor direct start and stop, and with overload and phase protection and loss of pressure protection.

6. Pipe or cable wiring.

7, the implementation of the standard GB3836-2000, IEC60079.

Explosion-proof electromagnetic starters are generally used to frequently control motor start-stop or forward/reverse, and AC contactors are used to open and close the circuit. Internal over-current components (thermal relays) are also installed. Automatically cut off the circuit; and the circuit breaker function is different from the short-circuit current can not be cut off (the fuse can be cut off the short-circuit fault, but one-time), compared with the circuit breaker is more suitable for frequent operation.

From the above characteristics between them, we can see that, whether it is explosion-proof circuit breakers or explosion-proof electromagnetic starters, they all have the ability to control the opening and closing of the line, the biggest difference between them lies in the different ability to control the line breaking. .