28 September 2021
What does it mean when a circuit breaker is described as an "inverse time" trip breaker?Product Line:
Inverse time tripping is a characteristic of circuit breakers in which the breaker trips in more time with lower overcurrent
, and less time with higher overcurrent
. For the US, Article 100 of the National Electric Code defines it as follows: "Inverse Time (as applied to circuit breakers).
A qualifying term indicating that there is purposely introduced a delay in the tripping action of the circuit breaker, which delay decreases as the magnitude of the current increases."
All Schneider Electric/Square D/Merlin Gerin Circuit Breakers and Supplementary Protectors are inverse time trip (excludes Molded Case Switches and Motor Circuit Protectors).