All QO circuit breakers are equipped with the Visi-Trip indicator. When a Visi-Trip circuit breaker trips, the handle snaps to a midpoint position between “OFF” and “ON” and a highly visible, red indicator easily identifies the tripped breaker. This enables you to easily distinguish which breaker has tripped in a load center that may contain up to 60 different circuit breakers. QO circuit breakers have features no other manufacturer can offer. They come in many different sizes and can meet the needs of virtually every function in your home or business. These types of quality, industry exclusive products keep the Square D brand ahead of the competition and are builders’ and electrical contractors’ first choice in electrical protection.Shielded copper bus barAvailable in single and three phaseGround bar is included with all main lugs load centers with three mounting locationsConvertible mains let you meet changing job-site requirementsTangential main service knockoutsEnclosure rotates for top or bottom feed to reduce service cable wasteQwik-Open circuit breaker protectionExclusive Visi-Trip red indicatorQuick make – quick break mechanism