Square D 3G-OTH-21927 — Technical Specifications

Name: Square D 3G-OTH-21927 SQUARE D Miniature Circuit Breaker: 40 A, 120/240V AC, Three Phase, 10kA at 120/240V AC, 3 Poles (MPN QO3401021). Key specifications — Phase: Three; Amps: 40 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 QO Series Miniature Circuit Breaker (MPN QO3401021) is a three-phase, plug-in circuit breaker rated for 40 A at 120/240V AC with a maximum AIR rating of 10kA at 120/240V AC. Designed for use with QO Load Centers and NQ Panelboards, this 3-pole breaker provides overcurrent protection in industrial electrical distribution systems.

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Technical Specifications

Parameter	Value
AC	120/240V
Amps	40 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	QO3401021