Report Incorrect Product Information


Square D QONQ42MS300 120/240 VAC 300 Amp 1-Phase 3-Wire Fixed Main Breaker Load Center Interior

MFG Part #: QONQ42MS300
Brand Name: Square D by Schneider Electric
UPC: 78590170677
Online Part #: 381568


Square D,NQ 300A 42 CKT MB 1PH AL,1 phase,120/240 V AC,300 A,Fixed Mains LAL main breaker,Interior,Panel,QO,QO Load Centers,UL, CSA

Detailed Information

Make and Model

Online Part #: 381568
MFG Name: Schneider Electric


Size: 20 IN,62 IN
Voltage Rating: 240 VAC
Prop65_Warning: WARNING: This product can expose you to chemicals including: Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
Phase: 1
Amperage Rating: 300 A
Sub Brand: QO
Mounting: PANEL
Type: Product, 3-WIRE
Standards: CSA-UL
Number of Feeders: 42
Application: MAIN BREAKER
Brand Name: Square D by Schneider Electric

Find A Branch