Mini Circuit Breaker 40A 1 Pole 120/240VAC 10kA Plug-In Mount
Mini Circuit Breaker 40A 1 Pole 120/240VAC 10kA Plug-In Mount
Mini Circuit Breaker 40A 1 Pole 120/240VAC 10kA Plug-In Mount
Mini Circuit Breaker 40A 1 Pole 120/240VAC 10kA Plug-In Mount
Square D

Square D QO140 Mini Circuit Breaker 40A 1 Pole 120/240VAC 10kA Plug-In Mount

  • MPN: QO140
  • UPC: 785901400189
  • PPN: SCH-QO140

CAD

$31.58

/ EA

Available to Order

Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST

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Spec sheet

Description

Mini Circuit Breaker 40A 1 Pole 120/240VAC 10kA Plug-In Mount

Features

  • Featuring the industry-exclusive QO plug-on design, this 40-amp single-pole breaker provides a high-speed "quick-make, quick-break" mechanism that minimizes internal arcing and contact wear. This ensures rapid circuit interruption during overloads or short circuits, protecting your sensitive electronics and branch wiring from thermal damage more effectively than standard thermal breakers.
  • The QO140 includes a highly visible, integrated red indicator window that appears instantly when the breaker trips. This "Visi-Trip" feature eliminates the guesswork for homeowners and maintenance staff, allowing you to identify the specific faulted circuit in a dark electrical panel without having to manually test or reset every handle in the row.
  • Designed with a space-saving 0.75-inch width, this breaker is specifically engineered for Square D QO, QO-P, and NQ panels. The compact footprint allows for maximum circuit density within your load center, making it the ideal solution for adding high-amperage dedicated circuits (like those for window AC units or small pumps) where panel space is at a premium.
  • This breaker utilizes high-quality pressure plate wire connectors that ensure a tight, low-resistance connection for both copper and aluminum conductors. This superior termination method resists loosening over time even in environments with subtle mechanical vibrations reducing the risk of "hot spots" and potential fire hazards at the panel bus bar.

Documentation & Downloads

Specifications

Key Specifications

Country of Origin
Mexico
Depth74 mm

Complementary Attributes

Line Rated Current
40 A

Important Information Attributes

Persona Type Ids
EU, LC, OM
Certificate Agency
UL Listed, CSA
Carbon Footprint Of The Distribution Phase [A4]
0.0145796487, 0 kg CO2 eq.
Carbon Footprint Of The Installation Phase [A5]
0.0000282266, 0 kg CO2 eq.
Carbon Footprint Of The Use Phase [B2 B3 B4 B6]
17 kg CO2 eq., 17.3042434783
Local Publishable Date
2026-04-14
Stocking Flag
Y
Device Type
LV equipment - Low voltage circuit breaker
Traceability
No
Average Life Duration
15 year(s)
Weee Product Category
5
Eoli Availability Display
No need of specific recycling operations
Reach Full Compliance Status Id
CONTAINS_SVHC
Rohs Eur In Scope
Yes
Rohs Eur Conformity Date
2534
China Rohs In Scope
No
With Recycled Cardboard
No
Product Contributes To Saved And Avoided Emissions
No
Tier
1
Function Option
Standard
Market Segmentation
Residential
Awg Gauge
8 AWG...2 AWG copper or aluminium
Circuit Breaker Type
standard
Energy Efficiency Optimized
False
Number Of Poles
1P
Product Availability
Stock - Normally stocked in distribution facility
Range Of Product
QO
Software Version
EIME v5.9.1
Tightening Torque
5-5 N.m
Pep Code
ENVPEP2111016EN
Pep Verification Date
2021-11-01
Psr Version
PSR-0005-ed2-EN-2016 03 29
Data Source
extrapolated product
Functional-unit Quantity
1
Reference Lifetime In Y
20
Energy Model - Manufacturing [A1-a3]
Energy model used: Mexico
Energy Model - Use [B6]
Electricity mix; AC; 120V; US / Electricity mix; AC; 127V; MX
Height Nominal
79 mm
Halogen-free Status
Halogen free product
Package Weight(Lbs)
127.006 g
Warranty (In Months)
18
Persona Type NamesEnd User, Contractor, Original Equipment Manufacturer
[Ue] Rated Operational Voltage120/240 V AC, 120 V AC
Carbon Footprint Of The End-of-life Phase [C1 To C4]0 kg CO2 eq., 0.0206572426
Carbon Footprint Of The Manufacturing Phase [A1 To A3]0.7 kg CO2 eq., 0.6602843966
Local Data StatusPublishable
Return IndicatorY
Stock Policy1
ServiceabilityNo
Field Service DivisionPPIBS
Weee ScopeIn
Scope PerimeterOutside of Europe
Reach Full Compliance StatusReference contains Substances of Very High Concern above the threshold
Reach Compliance DirectiveReference contains Substances of Very High Concern above the threshold
Rohs Eur StatusCompliant
Rohs Eur Full Compliance StatusCompliant
China Rohs Label1
Without Single Use PlasticYes
Tier Id1
Function Option IdSTANDARD
Market Segmentation IdRESIDENTIAL
Product Kit IdentifierN
Circuit Breaker ApplicationHACR rated
Electrical Connectionpressure plate
Mounting Modeplug-in
Number Of Spaces Required1
Product Or Component Typeminiature circuit-breaker
ReturnabilityYes
Sustainable PackagingNo
Total Lifecycle Carbon Footprint18 kg CO2 eq.
Database Version2016-11
Pcr VersionPCR-ed3-EN-2015 04 02
Type Of Verification For The PepIndependent internal review
Functional-unit DescriptionProtect during 20 years the installation against overloads and short-circuits in circuit with assigned voltage 120V and rated current 20A. This protection is ensured in accordance with the following parameters:& 10- Number of poles 1p& 10- Rated breaking capacity 10KA
Functional-unit Unitunit
Energy Consumption On Product Lifetime In Kwh24.8784
Energy Model - Installation [A5]Electricity mix; AC; 120V; US / Electricity mix; AC; 127V; MX
Energy Model - End Of Life [C1-c4]Electricity mix; AC; 120V; US / Electricity mix; AC; 127V; MX
Width Nominal19 mm
Nbr. Of Units In Pkg.1
Take-backNo
Customs Code8536200040

Environment Attributes Main

China Rohs Regulation
Product out of China RoHS scope , Pro-active China RoHS declaration (out of China RoHS legal scope)
Halogene Performance
Halogen free product
Toxic Heavy Metal Free
Yes
Carbon Footprint
17.9997929927
Environmental Disclosure
ENVPEP2111016EN
Halogen Content Performance
Halogen free product
Packaging Without Single Use Plastic
Yes
Pep Code
ENVPEP2111016EN
Pcr Version
PCR-ed3-EN-2015 04 02
Type Of Verification For The Pep
Independent internal review
Take BackNo
Recycled Metal Content At Cr Level0 %
Mercury FreeYes
Ambient Air Temperature For Operation40 °C
Eu Rohs DirectiveCompliant
Packaging Made With Recycled CardboardNo
Reach RegulationReference contains Substances of Very High Concern above the threshold
Pep Verification Date2021-11-01
Psr VersionPSR-0005-ed2-EN-2016 03 29

General Attributes

Product Or Component Type
miniature circuit-breaker
Range Of ProductQO

Contractual Warranty Attributes

Warranty Period
18 months
Warranty18 months
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