™A market interruption can pause trading after specified price-movement thresholds. A pause changes execution availability; it does not guarantee your desired exit price.
Orders & Market Structure
Circuit breaker
A rule-based trading pause designed to slow extraordinary market declines or security-specific volatility.
Plain-English context
Put the definition to work.
A market-wide breaker and a security-specific volatility pause are different mechanisms; neither assures an exit at your stop.
Further reading and verification. Examples are hypothetical, not current quotes or recommendations. Product terms, tax treatment and market rules can change. FINRA — order types and execution