Circuit breaker rating for 100a contactor
When selecting a circuit breaker to match a 100A contactor, you'll want to consider the following factors:
- Contactor rating: The contactor's rating is usually indicated on the manufacturer's label or documentation. In this case, it's 100A.
- Circuit breaker rating: The circuit breaker's rating should be equal to or greater than the contactor's rating. For a 100A contactor, you'll want a circuit breaker with a rating of at least 100A.
- Inrush current: Some contactors may have a higher inrush current (e.g., during motor startup) than their rated current. To account for this, you may want to choose a circuit breaker with a higher rating (e.g., 125A or 150A) to ensure it can handle the inrush current.
Here are some common circuit breaker ratings that would match a 100A contactor:
- 100A (e.g., Square D QO100, Siemens Q100)
- 125A (e.g., Square D QO125, Siemens Q125)
- 150A (e.g., Square D QO150, Siemens Q150)
When selecting a circuit breaker, make sure to check the manufacturer's documentation and specifications to ensure it meets the following requirements:
- The circuit breaker's rating is equal to or greater than the contactor's rating (100A in this case).
- The circuit breaker is designed for the same voltage and frequency as the contactor (e.g., 120/240V AC, 60Hz).
- The circuit breaker meets any additional requirements, such as fault current ratings or arc fault protection.
Remember to always follow the manufacturer's instructions and guidelines when selecting and installing circuit breakers and contactors.