Q: What's the difference between B, C, and D curve circuit breakers?
A: All Circuit Breakers carry a current rating (In) which is the amount of current the breaker can carry continuously. The curve type (B, C, D, etc...) designates the instantaneous trip current range, or the amount of current at which the breaker will trip without causing a time delay. Generally, the higher the current spike, the faster the breaker will trip. Below you'll find a list of the the most common curve types and their instantaneous trip ratings.
B Curve: Trips above 3 times In up to 5 times In
C Curve: Trips above 5 times In up to 10 times In
D Curve: Trips above 10 times In up to 20 times In
REASONS WHY THOUSANDS OF COMPANIES USE QUANTUM AUTOMATION:
Technical Info for Circuit Protection / Fuses / Disconnects
Manuals for Circuit Protection / Fuses / Disconnects
Product Inserts for Circuit Protection / Fuses / Disconnects