Square D QOB350 Mini Circuit Breaker 50A 3 Pole 120/240VAC Bolt-On, 10kA Breaking Capacity
- MPN: QOB350
- UPC: 785901417163
- PPN: SCH-QOB350
CAD
$383.31
/ 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 50A 3 Pole 120/240VAC Bolt-On, 10kA Breaking Capacity
Features
- Specifically designed for Square D NQ and NQOD panelboards, this QOB (Quick-Open Bolt-on) breaker features a permanent screw-on connection to the bus bar. This high-integrity mechanical interface is the preferred standard for industrial and commercial facilities where constant vibrations or temperature fluctuations could loosen standard plug-on units, ensuring long-term electrical stability and fire safety.
- Providing a robust 50 Amps at 240V AC across three poles, this breaker is engineered to power large commercial loads such as industrial air compressors, HVAC chillers, and large motor starters. The common-trip mechanism ensures that if one phase faults, all three poles trip simultaneously, preventing "single-phasing" conditions that can lead to catastrophic motor burnout and expensive equipment replacement.
- Featuring the industry-exclusive Visi-Trip indicator, a high-visibility red flag appears in the breaker window the moment a fault is detected. This allows facility managers and maintenance technicians to perform instant visual diagnostics across a dense panelboard, significantly reducing troubleshooting time and allowing for faster power restoration to critical business operations.
- With a 10,000-amp interrupting rating, this breaker is built to safely contain and extinguish high-energy electrical arcs during a short circuit. It is fully UL Listed and CSA Certified, ensuring your building's electrical system remains strictly compliant with National Electrical Code (NEC) standards and protecting your facility s infrastructure from severe thermal damage during an electrical fault.
Documentation & Downloads
Specifications
Key Specifications
| Country of Origin | Mexico |
|---|
| Depth | 74 mm |
|---|
Complementary Attributes
| Rated Current | 50 A |
|---|
| Line Rated Current | 50 A |
|---|
Important Information Attributes
| Persona Type Ids | EU, EUA, LC, OM, SC |
|---|---|
| Certificate Agency | UL Listed, CSA |
| Carbon Footprint Of The End-of-life Phase [C1 To C4] | 0.1 kg CO2 eq., 0.0704832431 |
| Carbon Footprint Of The Manufacturing Phase [A1 To A3] | 2 kg CO2 eq., 2.2529137339 |
| Local Data Status | Publishable |
| Return Indicator | Y |
| Stock Policy | 2 |
| 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 | COMMERCIAL |
| Product Kit Identifier | N |
| Circuit Breaker Application | HACR rated |
| Electrical Connection | pressure plate |
| Mounting Mode | bolt-on |
| Number Of Spaces Required | 3 |
| Product Or Component Type | miniature circuit-breaker |
| Returnability | Yes |
| Sustainable Packaging | No |
| Total Lifecycle Carbon Footprint | 20 kg CO2 eq. |
| 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 |
| [Ue] Rated Operational Voltage | 240 V AC |
| Nbr. Of Units In Pkg. | 1 |
| Take-back | No |
| Customs Code | 8536200040 |
| Persona Type Names | End User, Consumer, Contractor, Original Equipment Manufacturer, Electrician |
|---|---|
| Carbon Footprint Of The Distribution Phase [A4] | 0.0497462774, 0 kg CO2 eq. |
| Carbon Footprint Of The Installation Phase [A5] | 0.0000963101, 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 | N |
| 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 | Commercial |
| 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 | EIME v5.9.1 |
| Tightening Torque | 5-5 N.m |
| Weee Label | The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins. |
| Database Version | 2016-11 |
| Pcr Version | PCR-ed3-EN-2015 04 02 |
| Type Of Verification For The Pep | Independent internal review |
| Functional-unit Description | Protect 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 Unit | unit |
| Energy Consumption On Product Lifetime In Kwh | 24.8784 |
| 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 Nominal | 57 mm |
| Halogen-free Status | Halogen free product |
| Package Weight(Lbs) | 385.56 g |
| Warranty (In Months) | 18 |
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 | 19.6774830427 |
| 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 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 | 2021-11-01 |
| Psr Version | PSR-0005-ed2-EN-2016 03 29 |
General Attributes
| Product Or Component Type | miniature circuit-breaker |
|---|
| Range Of Product | QO |
|---|
Contractual Warranty Attributes
| Warranty Period | 18 months |
|---|
| Warranty | 18 months |
|---|
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CAD
$383.31
/ EA
Available to Order
Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST
Loading dialog...
Looking to buy a large quantity?
To View Branch Inventory And Your Custom Pricing
Spec sheet
CAD$383.31/ EA
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