The exclusive QO Visi-Trip instantly identifies a tripped circuit breaker with a red indicator window. The Visi-Trip reduces the number of call backs, as well as the chance that other circuits will be turned off accidentally. This breaker will work only in Square D branded residential panels. Provides overload and short circuit protection (240Vac). Typical application for a double pole 50A circuit breaker is to feed our HomeLine Spa Pack for GFI protection of pools, spa, or hot tubs. 10,000 Amperes Interrupting Rating (AIR). HACR type for use with air conditioning, heating and refrigeration equipment having motor group combinations and marked for use with HACR type circuit breakers. Option for padlocking breaker in "ON" or "OFF" position.