The answer to 'cost to install circuit breaker' is that the cost can vary significantly depending on several factors. Typically, the cost to install a new circuit breaker ranges from $150 to $500 or more, including labor and materials. The exact price will depend on the complexity of the electrical work, the location and accessibility of the electrical panel, the type of circuit breaker needed, and whether any additional upgrades or repairs are required.
For example, installing a simple, standard circuit breaker in an accessible electrical panel may be on the lower end of the range, while upgrading to a more advanced circuit breaker or working in a cramped or hard-to-reach area could push the cost towards the higher end. It's always best to get multiple quotes from licensed and insured electrical contractors in your local area to determine the most accurate cost for your specific project.