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™ QO120HM Miniature Circuit Breakers
Documents
Catalog
Instruction/Installation Manual
Owners/User Manual
RoHS
Specification Sheet
Schneider ElectricSquare D™

Square D™ QO120HM High Magnetic Miniature Circuit Breaker, 120 V AC, 20 A, 10 kA Interrupt, 1 Poles, Thermal Magnetic Trip

Sku #78590140011

MFG #QO120HM

Attributes

Type:High Magnetic
Amperage Rating:20 A
Interrupt Rating:10 kA
Voltage Rating:120 V AC
Frequency Rating:50/60 Hz
Frame:QO
Documents
Catalog
Instruction/Installation Manual
Owners/User Manual
RoHS
Specification Sheet
Square D™Square D™ QO120HM High Magnetic Miniature Circuit Breaker, 120 V AC, 20 A, 10 kA Interrupt, 1 Poles, Thermal Magnetic Trip
SKU #78590140011
MFG #QO120HM
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.