Air switch specifications, air switch specifications and model parameters

Common specifications of low-voltage circuit breakers.

Universal circuit breaker:

Shell frame grade specifications: 1600, 2000, 3200, 4000, 5000, 6300A

Current rating. in：200，400，630，800，1000，1250，1600，2000，2500，2900，3200，3600，4000，5000，6300a

Molded case circuit breaker.

With miniature circuit breaker):

Shell class specifications: 63, 125, 225, 400, 630, 800A

Rated current in: 1, 2, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63, 80, 100, 125, 160, 180, 200, 225, 315, 350, 400, 500, 630, 700, 800A

The general household specifications are 16, 20, 25, 32, 40, 50, and 63, which are more commonly used.

There are slight differences between manufacturers, and the difference is not big, taking RMM1 as an example.

Model RMM1-63H

rmm1-100c

rmm1-100s/h

rmm1-250s/h

rmm1-400s/h

rmm1-630s/h

RMM1-800S H Lighting circuit is divided into 6, 10, 16, 25, 32 (unit A) of DZ type

DW and DZ types for power circuits are divided into 20, 32, 50, 63, 80, 100, 125, 160, 250, 400, 600, 800, 1000...Unit a).

The air switch is actually said to have three different structures: the large one is ACB (air circuit breaker, also known as the frame circuit breaker), the medium one is MCCB (molded case circuit breaker), and the small one is MCB (miniature circuit breaker), and the commonly used models corresponding to Schneider are MT, NSX and C65, and the specific specifications and parameters can be found on Schneider**.

The common air switch models are DZ series and DW series. Among them, the DZ series is generally a household type, mainly C16, C25, C32, C40, C60, C80, C100 and other models. An air switch, also known as an air circuit breaker, is a type of circuit breaker.

An air switch is a type of switch that automatically disconnects whenever the current in the circuit exceeds the rated current.

The air switch is a very important electrical appliance in the low-voltage distribution network and the power drive system, which integrates control and a variety of protection functions. In addition to contacting and breaking circuits, it can also be used to protect circuits and electrical equipment from short circuits, serious overloads, and undervoltages, and can also be used to start motors infrequently.

Air switch precautions

1. The protection functions of the air switch, such as leakage, load, short circuit, etc., are set by the production plant, and cannot be changed casually to avoid affecting its function, and the function of the experimental switch is to check the operation status of the air switch after it is used for a period of time in the case of closure and energization.

2. The connecting wire circuit of the leakage circuit breaker must pass through the overload end of the air switch, and any phase wire or neutral line is not allowed to pass through the leakage circuit breaker, otherwise the air switch cannot be closed due to artificial "leakage", resulting in "misoperation".

3. After the air switch is cut off due to a short circuit in the circuit, it should be repaired if the head is scorched and damaged or there are pits. The four-pole leakage circuit breaker needs to be connected to the neutral wire in order for the electronic circuit to function properly.

The small empty open has an a

The shell type is made up of a

1. At present, the family uses the DZ series of air switches (small circuit breakers with leakage protection), and the common ones are the following models: C16, C25, C32, C40, C60, C80, C100, C120 and other specifications, where C represents the trip current, that is, the starting current, for example, C32 means that the starting current is 32 amps, and the general installation of 6500W water heater should use C32, and the installation of 7500W and 8500W water heaters should use C40 air opening.

2. Common models in the industry are: DW and DZ types for power circuits are 20, 32, 50, 63, 80, 100, 125, 160, 250, 400, 600, 800, 1000 and so on (unit A).

Common specifications of low-voltage circuit breakers.

Universal circuit breaker:

Shell frame grade specifications: 1600, 2000, 3200, 4000, 5000, 6300A

Rated current in: 200, 400, 630, 800, 1000, 1250, 1600, 2000, 2500, 2900, 3200, 3600, 4000, 5000, 6300A

Molded case circuit breaker (including miniature circuit breaker):

Shell class specifications: 63, 125, 225, 400, 630, 800A

Rated current in: 1, 2, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63, 80, 100, 125, 160, 180, 200, 225, 315, 350, 400, 500, 630, 700, 800A

The general household specifications are 16, 20, 25, 32, 40, 50, and 63, which are more commonly used.

13860w。

The size of the empty open is the size of the rated current. In fact, the existence of air switches, in addition to breaking circuits, is to protect circuits. When the current in the circuit exceeds the rated current value of the circuit breaker, the circuit breaker will trip.

If the air switch is selected too small, it will happen that the switch will automatically trip while the circuit is still working normally. On the other hand, if the switch is too large, the current in the circuit will be overloaded, but the switch will not trip.

The number of amperes that each functional space is empty can be decided by the user according to the electricity consumption of each space, for example, the kitchen and the dining room are different, and the kitchen will have a lot of electrical appliances, including rice cookers, range hoods, etc.

Universal circuit breaker:

Shell frame grade specifications: 1600, 2000, 3200, 4000, 5000, 6300A

Rated current in: 200, 400, 630, 800, 1000, 1250, 1600, 2000, 2500, 2900, 3200, 3600, 4000, 5000, 6300A

Molded case circuit breaker (including miniature circuit breaker):

Shell class specifications: 63, 125, 225, 400, 630, 800A

Rated current in: 1, 2, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63, 80, 100, 125, 160, 180, 200, 225, 315, 350, 400, 500, 630, 700, 800A

The general household specifications are 16, 20, 25, 32, 40, 50, and 63, which are more commonly used.

Pro, the air switch is an automatic circuit breaker used to protect circuits and equipment, and its specifications and model parameters include the following aspects:1Amount of suspicion Huai fixed voltage:

The maximum voltage that an air switch can withstand. 2.Current rating.

The maximum current that an air switch can withstand. 3.Number of poles:

The number of poles of the air switch is generally single-pole, double-pole, three-pole, etc. 4.Break Capacity:

Hypocrisy refers to the maximum short-circuit current that an air switch can withstand. 5.Rated insulation voltage:

Refers to the maximum voltage that the insulating material can withstand under normal working conditions of the air switch. 6.Rated Frequency:

Refers to the power frequency to which the air switch is applied. 7.Operating Environment:

Refers to the working environment of the air switch, such as temperature, humidity, etc. 8.Rated number of operations:

Refers to the rated life of the air switch, which can be operated. The specific specifications and model parameters need to be selected according to the actual needs. When purchasing an air switch, it is necessary to determine the required air switch model and parameters according to the electrical parameters of the equipment and load to be protected.