# Air Circuit Breaker Setting Calculation Pdf

## Air Circuit Breaker Setting Calculation PDF

An air circuit breaker is a type of electrical switch that is used to protect an electrical circuit from overcurrent. It does this by interrupting the flow of electricity when the current exceeds a predetermined value. The setting of an air circuit breaker is the value of current at which it will trip. The calculation of the setting of an air circuit breaker is based on the following factors: * The maximum operating current of the circuit * The type of protection required * The ambient temperature The maximum operating current of the circuit is the highest current that the circuit is expected to carry on a continuous basis. The type of protection required depends on the nature of the load and the consequences of a fault. The ambient temperature is the temperature at which the air circuit breaker will be operating. The following formula can be used to calculate the setting of an air circuit breaker: ``` I = (In * K) + (C * Ta) ``` where: *

### I

is the setting of the air circuit breaker in amps *

### In

is the maximum operating current of the circuit in amps *

### K

is a constant that depends on the type of protection required *

### C

is a constant that depends on the ambient temperature in degrees Celsius *

### Ta

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