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

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

$431.89

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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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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 Origin	Mexico
Depth	74 mm

Weight	492.147 g

Complementary Attributes

Line Rated Current	70 A
Ue Rated Operational Voltage	240 V AC

Rated Current	70 A

Important Information Attributes

Persona Type Ids	EU, EUA, LC, OM, SC
Poles Description	3P
Carbon Footprint Of The Distribution Phase A4	0.3308118930556213, 0.3 kg CO2 eq.
Carbon Footprint Of The Installation Phase A5	0.06582948337657545, 0.1 kg CO2 eq.
Carbon Footprint Of The Use Phase B2 B3 B4 B6	11 kg CO2 eq., 10.712826938923408
Local Publishable Date	2026-09-28
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	3P
Product Availability	Stock - Normally stocked in distribution facility
Range Of Product	QO
Software Version	v6.3.2
Tightening Torque	5.6-5.6 N.m
Weee Label	The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins.
Data Source	extrapolated product
Width Nominal	57 mm
Customs Code	8536200040
Warranty In Months	18
Att X Circuit Breaker Type 1	standard
Functional Unit Quantity	1
Reference Lifetime In Y	20

Persona Type Names	End User, Consumer, Contractor, Original Equipment Manufacturer, Electrician
Certificate Agency	UL Listed, CSA
Carbon Footprint Of The End Of Life Phase C1 To C4	0.5 kg CO2 eq., 0.465178265767456
Carbon Footprint Of The Manufacturing Phase A1 To A3	3 kg CO2 eq., 3.190190524196367
Local Data Status	Publishable
Return Indicator	Y
Serviceability	No
Field Service Division	PPIBS
Weee Scope	In
Scope Perimeter	At least in Europe
Reach Full Compliance Status	Reference contains Substances of Very High Concern above the threshold
Reach Compliance Directive	Reference contains Substances of Very High Concern above the threshold
Rohs Eur Status	Compliant
Rohs Eur Full Compliance Status	Compliant
China Rohs Label	1
Without Single Use Plastic	Yes
Tier Id	1
Function Option Id	STANDARD
Market Segmentation Id	RESIDENTIAL
Product Kit Identifier	N
Circuit Breaker Application	HACR rated
Electrical Connection	pressure plate
Mounting Mode	plug-in
Number Of Spaces Required	3
Product Or Component Type	miniature circuit-breaker
Returnability	Yes
Sustainable Packaging	No
Total Lifecycle Carbon Footprint	0 kg CO2 eq.
Database Version	2026-04
Height Nominal	79 mm
Nbr. Of Units In Pkg.	1
Halogen Free Status	Halogen free product
Att N Breaking Capacity 5 Atc N Breaking Capacity	10 kA
Functional Unit Description	Protect the installation from overloads and short circuits in a circuit with rated voltage Ue, rated current In, with Np poles, a rated breaking capacity Icn, and the tripping curve Cd if applicable, and, if applicable, the specific specifications, in the Household/Commercial application area, according to the appropriate use scenario, and during the reference service life of the product of 20 years.Protect the installation from overloads and short circuits in a circuit with rated voltage Ue, rated current In, with Np poles, a rated breaking capacity Icn, and the tripping curve Cd in the Household and Commercial application area, according to the appropriate use scenario, and during the reference service life of the product of 20 years.
Functional Unit Unit	unit
Recyclability Potential In %	32

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	0
Environmental Disclosure	ENVPEP2111016EN
Halogen Content Performance	Halogen free product
Packaging Without Single Use Plastic	Yes
Pep Code	ENVPEP2111016EN
Pcr Version	PEP-PCR-ed4-2021 09 06
Type Of Verification For The Pep	Independent internal review

Take Back	No
Recycled Metal Content At Cr Level	0 %
Mercury Free	Yes
Ambient Air Temperature For Operation	40 °C
Eu Rohs Directive	Compliant
Packaging Made With Recycled Cardboard	No
Reach Regulation	Reference contains Substances of Very High Concern above the threshold
Pep Verification Date	2026-09-01
Psr Version	PSR-0005-ed3.1-EN-2023 12 08