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120/240 VAC or 208Y/120V AC or 240 VAC
81 in diameter
Ac Voltage Rating 240Vac
QOU320 - Square D / Schneider Electric - Qou
Square D QOB280-1021 120/240 VAC or 208Y/120V ACQOB Bolt On 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 NQOB and NQOD panelboards. QOB circuit breakers have an over center, trip free toggle mechanism with quick make, quick break action and positive handle indication. The tripping mechanisms in three pole circuit breakers operate such that an overcurrent on any pole of the circuit breaker