The Square D™ QOB370 is a QO™ bolt-on miniature circuit breaker rated at 70A, 3-pole, for 120/240 VAC systems. It provides 10 kA interrupting capacity with common/thermal magnetic trip. Bolt-on mount design for secure installation in NQOB and NQ panelboards or interiors. Accepts wire sizes #4 to #2/0 AWG (copper or aluminum). Compatible with 3-phase power distribution systems. HACR rated. UL Listed and CSA certified. Suitable for commercial and industrial 3-phase branch circuit protection requiring high amperage in panelboard configurations.
