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Square D Miniature QOB Circuit Breaker
QOB (bolt-on) one-, two- and three-pole thermal-magnetic circuit breakers provide overcurrent protection and switching on ac and dc systems. Bolt-on QOB circuit breakers are for use in NQO and NQOD panelboards.
QO and QOB circuit breakers have Visi-Trip® trip indication, which provides a visual indication that the circuit breaker has tripped and interrupted the circuit.