Home
Job Track

For 24-HOUR EMERGENCY SERVICE: 

(610) 312-8100 or (877) 312-8100

Featured Products
Line Card
Schneider EZ Selector Tool
Quick Order
Home
Home
Featured Products
Line Card
Schneider EZ Selector Tool
Quick Order
loading content
Square D™ QO342MQ225175 Three Phase Main Breaker Load Centers
Documents
Instruction/Installation Manual
Owners/User Manual
RoHS
Specification Sheet
Schneider ElectricSquare D™

Square D™ QO™ QO342MQ225175 3-Phase Convertible Main Breaker Load Center, 208Y/120 VAC, 120/240 Delta VAC, 240 Delta VAC, 175 A, 25 kA Interrupt

Sku #78590145641

MFG #QO342MQ225175

Attributes

Type:3-Phase Convertible
Amperage Rating:175 A
Interrupt Rating:25 kA
Voltage Rating:208Y to 120/120 to 240 Delta/240 Delta V AC
Frequency Rating:50/60 Hz
Number of Circuits:42
Documents
Instruction/Installation Manual
Owners/User Manual
RoHS
Specification Sheet
Square D™Square D™ QO™ QO342MQ225175 3-Phase Convertible Main Breaker Load Center, 208Y/120 VAC, 120/240 Delta VAC, 240 Delta VAC, 175 A, 25 kA Interrupt
SKU #78590145641
MFG #QO342MQ225175
Please Log In or Register to view pricing.

Keep up to date with the latest products, special offers and news.

Colonial Electric Supply and it's divisions is a product supplier only. We do not serve as project engineers. Rather, we work with project engineers towards their design goals. We expect customers to obtain and use products in accordance with the manufacturer's intended use. We are not responsible for product malfunction due to misuse, with the exception of replacement per stated warranty conditions.

For 24-HR EMERGENCY SERVICE please call:

(610) 312-8100 or (877) 312-8100

Resources

LED CatalogSchneider EZ Selector ToolTerms & ConditionsPrivacy Policy

Company

About UsCareersCharity & CommunityCoStars

Support

Contact UsLocationsReturns Policy

Divisions

Colonial TelTekColonial Major ProjectsBright Light Annapolis Lighting
© 2026 Colonial Electric Supply. All Rights Reserved.