Circuit breaker ratings chart

Here is a general circuit breaker ratings chart:

Main Breaker Ratings Chart

Ampere Rating	Volts	Interrupting Capacity (IAC)	Tripping Characteristics
15	120/240	10,000 AIC	Instantaneous
20	120/240	15,000 AIC	Instantaneous
30	120/240	20,000 AIC	Instantaneous
40	120/240	25,000 AIC	Instantaneous
50	120/240	30,000 AIC	Instantaneous
60	120/240	35,000 AIC	Instantaneous
80	120/240	45,000 AIC	Instantaneous
100	120/240	55,000 AIC	Instantaneous
150	120/240	75,000 AIC	Instantaneous
200	120/240	100,000 AIC	Instantaneous
250	120/240	125,000 AIC	Instantaneous
300	120/240	150,000 AIC	Instantaneous

Notes:

AIC stands for Amperage Interrupting Capacity, which is the maximum amount of current a circuit breaker can interrupt without damage.
Instantaneous tripping means the breaker trips immediately when the current exceeds the rated value.
The ratings chart is for main breakers, which are typically used in service panels or main distribution panels.
The ratings chart is for 120/240-volt systems, which are common in residential and commercial applications.
The ratings chart is not exhaustive, and it's always recommended to consult the manufacturer's specifications for specific circuit breaker models.

Additional Information:

The National Electric Code (NEC) requires circuit breakers to be rated for the maximum available fault current at the point of installation.
The interrupting capacity of a circuit breaker is critical in determining its ability to safely interrupt a fault current.
The tripping characteristics of a circuit breaker can affect the speed and reliability of fault detection and clearance.