The answer to the cost to install a circuit breaker in Chicago is that it can vary quite a bit depending on several factors. Generally, you can expect to pay anywhere from $150 to $500 or more for a professional electrician to install a new circuit breaker.
The specific cost will depend on the type of circuit breaker needed, the accessibility and location of the electrical panel, the amount of labor required, and whether any additional electrical work is needed. Older homes may require more extensive upgrades, which can increase the overall cost. It's best to get quotes from multiple licensed electricians in your local area to get the most accurate pricing.