Square D QOB250 Mini Circuit Breaker 50A 2-Pole 120/240V AC 10kA Bolt-On Mount
- MPN: QOB250
- UPC: 785901416982
- PPN: SCH-QOB250
- UNSPSC: 39121603
CAD
$121.12
/ 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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Description
Mini Circuit Breaker 50A 2-Pole 120/240V AC 10kA Bolt-On Mount
Features
- Designed specifically for Square D NQ and NQOD panelboards, the QOB250 features a secure bolt-on connection to the bus bar. This mechanical attachment provides a more robust and vibration-resistant installation than standard plug-on breakers, making it the preferred choice for commercial and industrial environments where electrical continuity is critical.
- This breaker includes the exclusive red Visi-TripTM indicator window, which instantly flags a tripped state amidst a row of other breakers. This feature saves maintenance personnel valuable time during troubleshooting, allowing for faster reset cycles and significantly reducing downtime in busy commercial facilities.
- Providing reliable 50-amp, 2-pole thermal-magnetic protection, this unit is engineered to handle common 120/240V AC loads like HVAC units, water heaters, and industrial motors. Its calibrated "Quick-Make, Quick-Break" mechanism minimizes internal arcing, extending the life of the breaker and ensuring precise protection against both overloads and short circuits.
- Equipped with high-quality box lugs and pressure plate terminals, the QOB250 accommodates #8 #2 AWG aluminum or copper wiring. This design ensures a consistent, high-pressure contact that prevents loose connections and overheating a common failure point in high-amperage industrial circuits.
Documentation & Downloads
Specifications
Key Specifications
| Country of Origin | Mexico |
|---|---|
| Depth | 74 mm |
| Weight | 113.398 g |
|---|
Complementary Attributes
| Ue Rated Operational Voltage | 120/240 V AC, 120 V AC |
|---|---|
| Rated Current | 50 A |
| Line Rated Current | 50 A |
|---|
Important Information Attributes
| Persona Type Ids | EU, EUA, LC, OM, SC |
|---|---|
| Poles Description | 2P |
| Carbon Footprint Of The Distribution Phase A4 | 0.07622398805381592, 0.1 kg CO2 eq. |
| Carbon Footprint Of The Installation Phase A5 | 0.015168093589795126, 0 kg CO2 eq. |
| Carbon Footprint Of The Use Phase B2 B3 B4 B6 | 5 kg CO2 eq., 4.943164885069864 |
| Local Publishable Date | 2026-09-05 |
| 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 | 2P |
| Product Availability | Stock - Normally stocked in distribution facility |
| Range Of Product | QO |
| Software Version | v6.3.2 |
| 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. |
| Data Source | extrapolated product |
| Width Nominal | 38 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 | 0.1 kg CO2 eq., 0.10718400189678688 |
| Carbon Footprint Of The Manufacturing Phase A1 To A3 | 0.7 kg CO2 eq., 0.7350674190085881 |
| 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 | COMMERCIAL |
| Product Kit Identifier | N |
| Circuit Breaker Application | HACR rated |
| Electrical Connection | pressure plate |
| Mounting Mode | bolt-on |
| Number Of Spaces Required | 2 |
| 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 |
General Attributes
| Product Or Component Type | miniature circuit-breaker |
|---|
| Range Of Product | QO |
|---|
ETIM
| ETIM 8 | EC000042 |
|---|---|
| ETIM 10 | EC000042 |
| ETIM 9 | EC000042 |
|---|
Contractual Warranty Attributes
| Warranty | 18 months |
|---|
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CAD
$121.12
/ 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
CAD$121.12/ EA
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