Square D 3G-OTH-22161 — Technical Specifications

Name: Square D 3G-OTH-22161 SQUARE D Miniature Circuit Breaker: 90 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QO390). Key specifications — Phase: Three; Amps: 90 A; AC Voltage Rating: 120/240V AC; Max. AIR Rating: 10kA at 120/240V AC; For Use With: QO Load Centers and NQ Panelboards; Brand: SQUARE D.
Brand: Square D

The SQUARE D QO390 is a 90 A, three-phase miniature circuit breaker from the QO Series, designed for plug-in use with QO Load Centers and NQ Panelboards. It has an AC voltage rating of 120/240V AC and a maximum AIR rating of 10kA at 120/240V AC.

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Technical Specifications

Parameter	Value
AC	120/240V
Amps	90 A
Type	Three Phase, 10kA at 120/240V AC
Brand	SQUARE D
Phase	Three
Poles	3
For Use With	QO Load Centers and NQ Panelboards
Max. AIR Rating	10kA at 120/240V AC
AC Voltage Rating	120/240V AC
Manufacturer Part Number	QO390