Square D

Square D QO370 Mini Circuit Breaker 70A 3 Pole 120/240VAC 10kA Plug-in Mount

  • MPN: QO370
  • UPC: 785901004387
  • PPN: SCH-QO370
  • UNSPSC: 39121603

CAD

$431.89

/ EA

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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 70A 3 Pole 120/240VAC 10kA Plug-in Mount

Features

  • Designed specifically for the premium Square D QO platform, this unit features a seamless plug-in mounting style that snaps directly onto standard QO load centers. This native compatibility eliminates field modifications and speeds up your field installation process while preserving the structural integrity of your enclosure.
  • Engineered for demanding applications, this 70A, 3-pole miniature circuit breaker safely handles 240V AC to deliver robust, continuous power distribution. It is the ideal choice for safeguarding high-draw machinery, large commercial HVAC units, and heavy industrial three-phase loads.
  • Equipped with the industry-exclusive Visi-Trip red indicator flag, a prominent visual marker instantly signals exactly which breaker has tripped in a crowded panelboard. This feature saves valuable troubleshooting downtime during facility maintenance, allowing electrical contractors to quickly isolate faults, reset the thermal-magnetic toggle, and restore operations.
  • Featuring a high-performance 10 kAIC (10,000 Amperes Interrupting Capacity) short-circuit current rating, this thermal-magnetic breaker successfully interrupts dangerous electrical faults without failing catastrophically. This safeguards your expensive downstream machinery and heavy equipment from devastating overcurrent damage.
  • Built with versatile pressure plate box lugs, this electrical component accommodates a broad wire size range from AWG 8 down to AWG 2 in either copper or aluminum conductors. The heavy-duty terminal design ensures high torque retention and a low-resistance electrical connection, minimizing localized heating and long-term joint degradation under maximum load.
  • Fully CSA Certified and UL Listed as a standard miniature circuit breaker, this product complies with rigorous national safety mandates for Canadian commercial installations. Additionally, its official HACR rating ensures it is code-approved for the high inrush currents typical of heating, air conditioning, and refrigeration systems.

Documentation & Downloads

Specifications

Key Specifications

Country of OriginMexico
Depth74 mm
Weight476 g

Complementary Attributes

Line Rated Current70 A
Ue Rated Operational Voltage240 V AC
Rated Current70 A

Important Information Attributes

Persona Type IdsEU, EUA, LC, OM, SC
Poles Description3P
Carbon Footprint Of The Distribution Phase A40.0614151572, 0.1 kg CO2 eq.
Carbon Footprint Of The Installation Phase A50.0001189014, 0 kg CO2 eq.
Carbon Footprint Of The Use Phase B2 B3 B4 B617 kg CO2 eq., 17.3042434783
Local Publishable Date2026-04-14
Device TypeLV equipment - Low voltage circuit breaker
TraceabilityNo
Average Life Duration15 year(s)
Weee Product Category5
Eoli Availability DisplayNo need of specific recycling operations
Reach Full Compliance Status IdCONTAINS_SVHC
Rohs Eur In ScopeYes
Rohs Eur Conformity Date2534
China Rohs In ScopeNo
With Recycled CardboardNo
Product Contributes To Saved And Avoided EmissionsNo
Tier1
Function OptionStandard
Market SegmentationResidential
Awg Gauge8 AWG...2 AWG copper or aluminium
Circuit Breaker Typestandard
Energy Efficiency OptimizedFalse
Number Of Poles3P
Product AvailabilityStock - Normally stocked in distribution facility
Range Of ProductQO
Software VersionEIME v5.9.1
Tightening Torque5.6-5.6 N.m
Weee LabelThe product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins.
Data Sourceextrapolated product
Width Nominal57 mm
Customs Code8536200040
Warranty In Months18
Att X Circuit Breaker Type 1standard
Functional Unit Quantity1
Reference Lifetime In Y20
Recyclability Potential In %29
Persona Type NamesEnd User, Consumer, Contractor, Original Equipment Manufacturer, Electrician
Certificate AgencyUL Listed, CSA
Carbon Footprint Of The End Of Life Phase C1 To C40.1 kg CO2 eq., 0.0870163495
Carbon Footprint Of The Manufacturing Phase A1 To A33 kg CO2 eq., 2.7813749802
Local Data StatusPublishable
Return IndicatorY
ServiceabilityNo
Field Service DivisionPPIBS
Weee ScopeIn
Scope PerimeterAt least in 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 Required3
Product Or Component Typeminiature circuit-breaker
ReturnabilityYes
Sustainable PackagingNo
Total Lifecycle Carbon Footprint20 kg CO2 eq.
Database Version2016-11
Height Nominal79 mm
Nbr. Of Units In Pkg.1
Halogen Free StatusHalogen free product
Att N Breaking Capacity 5 Atc N Breaking Capacity10 kA
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

Environment Attributes Main

China Rohs RegulationProduct out of China RoHS scope , Pro-active China RoHS declaration (out of China RoHS legal scope)
Halogene PerformanceHalogen free product
Toxic Heavy Metal FreeYes
Carbon Footprint20.2341688665
Environmental DisclosureENVPEP2111016EN
Halogen Content PerformanceHalogen free product
Packaging Without Single Use PlasticYes
Pep CodeENVPEP2111016EN
Pcr VersionPCR-ed3-EN-2015 04 02
Type Of Verification For The PepIndependent 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 Typeminiature circuit-breaker
Range Of ProductQO

Contractual Warranty Attributes

Warranty Period18 months
Warranty18 months
Mini Circuit Breaker 70A 3 Pole 120/240VAC 10kA Plug-in Mount
Mini Circuit Breaker 70A 3 Pole 120/240VAC 10kA Plug-in Mount
Mini Circuit Breaker 70A 3 Pole 120/240VAC 10kA Plug-in Mount
Mini Circuit Breaker 70A 3 Pole 120/240VAC 10kA Plug-in Mount
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