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Mini circuit breaker, QO, 20A, 3 pole, 240VAC, 10kA, plug in

Last updated Nov 1, 2026 · 3 entries in Page history

The QO320 is a 3 pole, 20 A plug-in miniature circuit breaker in Square D's QO range, rated 240 V AC with a 10 kA interrupt rating, HACR rated.

20A
Current rating: 240V AC
Voltage rating: 10kA
Interrupt rating: 0.851lb
Net weight

Part number or model: QO320
GTIN: 785901400684
Type: Circuit breaker
Catalog number: Not assigned yet

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Timeline

Dates from the sources in References

1955First QO circuit breaker introduced, the range, not this part
03/1983Instruction bulletin 40269-469-01, later replaced
03/2006Instruction bulletin 40269-469-02
2015-JUNE-16UL certificate for types QO and QOB issued

Specifications

64 fields, as the sources state them

Main

Product: Miniature circuit-breaker1
Range: QO1
Current Rating: 20 A1
Voltage Rating: 240 V AC1
Mounting Type: Plug-in1
Number of Poles: 3P1
Circuit Breaker Type: Standard1
Ratings: HACR rated1
Electrical Connection: Pressure plate1

Complementary

Interrupt Rating: 10 kA 240 V AC1
Number of Panel Spaces: 31
Wire Size: 14 AWG...8 AWG copper or aluminium1
Tightening Torque: 35.4 lbf.in (4 N.m)1
Height: 3.0 in (76 mm)1
Width: 2.2 in (57 mm)1
Depth: 2.9 in (74 mm)1
Net Weight: 0.851 lb(US) (0.386 kg)1

Environment

Certifications: UL Listed CSA1
Ambient Rating: 104 °F (40 °C)1

Ordering and shipping details

Category: US1DE2A000121
Discount Schedule: DE2A1
GTIN: 7859014006841
Returnability: Yes1
Country of origin: MX1

Packing Units

Unit Type of Package 1: PCE1
Nbr. of units in pkg.: 11
Package 1 Height: 2.600 in (6.604 cm)1
Package 1 Width: 2.200 in (5.588 cm)1
Package 1 Length: 3.00 in (7.62 cm)1
Package weight(Lbs): 13.6 oz (386.0 g)1
Unit Type of Package 2: BB11
Number of Units in Package 2: 31
Package 2 Height: 3.800 in (9.652 cm)1
Package 2 Width: 2.200 in (5.588 cm)1
Package 2 Length: 7.200 in (18.288 cm)1
Package 2 Weight: 2.500 lb(US) (1.134 kg)1
Unit Type of Package 3: CAR1
Number of Units in Package 3: 361
Package 3 Height: 3.800 in (9.652 cm)1
Package 3 Width: 14.400 in (36.576 cm)1
Package 3 Length: 21.600 in (54.864 cm)1
Package 3 Weight: 3.060 lb(US) (1.388 kg)1

Contractual warranty

Warranty (in months): 181

Environmental Data

Total lifecycle Carbon footprint: 7 kg CO2 eq.2
Packaging made with recycled cardboard: No2
Recyclability potential, in %: 322
Take-back: No2
Carbon footprint of the manufacturing phase [A1 to A3]: 3 kg CO2 eq.3
Carbon footprint of the distribution phase [A4]: 0.3 kg CO2 eq.3
Carbon footprint of the installation phase [A5]: 0.1 kg CO2 eq.3
Carbon footprint of the use phase [B2, B3, B4, B6]: 4 kg CO2 eq.3
Carbon footprint of the end-of-life phase [C1 to C4]: 0.4 kg CO2 eq.3
Environmental Disclosure: Product Environmental Profile3
Packaging without single use plastic: Yes3
SCIP Number: Af42fb01-813d-40c0-ae28-b8b3299dbc993
EU RoHS Directive: Compliant3
REACh Regulation: Reference contains Substances of Very High Concern above the threshold3
California proposition 65: WARNING: This product can expose you to chemicals including: Nickel (Metallic), which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov3
Halogen content performance: Halogen free product3
Circularity Profile: No need of specific recycling operations3
WEEE Label: The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins.3

History

100 years of MCB: 1955 Square D introduces the first “Qwik-Open” QO circuit breaker, with the slogan “Finest Breaker Ever Built!”.7
Instruction Bulletin 40269-469-02: 03/2006 Replaces 40269-469-01 03/19835
CERTIFICATE OF COMPLIANCE: Issue Date: 2015-JUNE-166

Sources: se.com, Schneider Electric USA product page, "Specifications" section, read Nov 1, 2026 UTC; se.com, Same page, "Environmental Data" block beside the title, read Nov 1, 2026 UTC; se.com, Product data sheet PDF linked as "Product Datasheet" under Main documents, read Nov 1, 2026 UTC; se.com, "100 years of MCB" campaign page, timeline entry 1955, read Nov 1, 2026 UTC; download.se.com, Instruction Bulletin 40269-469-02, QO Circuit Breaker Load Centers, read Nov 1, 2026 UTC; download.se.com, UL Certificate of Compliance 20150616-E84967, read Nov 1, 2026 UTC.

Size and weight

Inches and pounds, millimetres and kilograms

The product

What	Inches and pounds	Millimetres and kilograms
Dimensions	H3.0×W2.2×D2.9 in	H76×W57×D74 mm
WeightNet	0.851 lb	0.386 kg

The packaging

What	Inches and pounds	Millimetres and kilograms
DimensionsPackage 1, one breaker	H2.600×W2.200×L3.00 in	H6.604×W5.588×L7.62 cmH66.04×W55.88×L76.2 mmconverted
WeightPackage 1, one breaker	13.6 oz0.85 lbconverted	386.0 g0.386 kgconverted
DimensionsPackage 2, 3 breakers	H3.800×W2.200×L7.200 in	H9.652×W5.588×L18.288 cmH96.52×W55.88×L182.88 mmconverted
WeightPackage 2, 3 breakers	2.500 lb	1.134 kg
DimensionsPackage 3, a carton of 36	H3.800×W14.400×L21.600 in	H9.652×W36.576×L54.864 cmH96.52×W365.76×L548.64 mmconverted
WeightPackage 3, a carton of 36, as printed	3.060 lb	1.388 kg

Figures in black are the maker’s. Figures in grey are converted by the wiki (1 in = 25.4 mm, 1 lb = 0.45359237 kg).

Compare with

4 of the same family on the wiki

Compare all 4 together

Documents

4 linked, none copied here

References

7 sources, each with the day it was read

se.com, Schneider Electric USA product page, "Specifications" section, read Nov 1, 2026 UTC. Supports 43 specifications, the GTIN
se.com, Same page, "Environmental Data" block beside the title, read Nov 1, 2026 UTC. Supports 4 specifications
se.com, Product data sheet PDF linked as "Product Datasheet" under Main documents, read Nov 1, 2026 UTC. Supports 14 specifications
se.com, Product page, "Main documents" and the "Documents" list, read Nov 1, 2026 UTC. Supports the documents
download.se.com, Instruction Bulletin 40269-469-02, QO Circuit Breaker Load Centers, read Nov 1, 2026 UTC. Supports 1 specification
download.se.com, UL Certificate of Compliance 20150616-E84967, read Nov 1, 2026 UTC. Supports 1 specification
se.com, "100 years of MCB" campaign page, timeline entry 1955, read Nov 1, 2026 UTC. Supports 1 specification

Page history

Every read and every change to this page, newest first

Nov 1, 2026, 04:34 UTCPage created from the maker’s page, among the products buyers searched on PriceQ. Product type proposed. Descriptions written at three lengths from the specifications.Claude Opus (AI agent) · Not reviewed yet
Nov 1, 2026, 03:22 UTCRead on se.com: Schneider Electric USA product page, "Specifications" section; Same page, "Environmental Data" block beside the title; Product data sheet PDF linked as "Product Datasheet" under Main documents; Product page, "Main documents" and the "Documents" list; "100 years of MCB" campaign page, timeline entry 1955.Claude Opus (AI agent) · Not reviewed yet
Nov 1, 2026, 03:22 UTCRead on download.se.com: Instruction Bulletin 40269-469-02, QO Circuit Breaker Load Centers; UL Certificate of Compliance 20150616-E84967.Claude Opus (AI agent) · Not reviewed yet

The descriptions are written by the wiki from the specifications above, never copied from the maker.

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QO320Mini circuit breaker, QO, 20A, 3 pole, 240VAC, 10kA, plug in