Documentation & Downloads
Square D QOB250 Mini Circuit Breaker 50A 2-Pole 120/240V AC 10kA Bolt-On Mount
- MPN: QOB250
- UPC: 785901416982
- PPN: SCH-QOB250
CAD
$117.60
/ EA
Available to Order
Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST
Company Stock:
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Description
Square D™ QO™ and QOB Miniature Circuit Breakers, QOB250, come in bolt-on mounted version and in a complete range of amperages and interrupting ranges to fit into various QO distribution panels. UL listed CSA certified They also have VisiTrip trip indication, which provides a visual indication that the circuit breaker has tripped and interrupted the circuit. This 2 pole QO circuit breaker is rated at 50A at 120/240VAC. This unit provides 10kA breaking capacity and bolt on mounting. A full line of features and factory installed accessories are also available such as shunt trips, auxiliary switches and alarm switches. QO circuit breakers are UL Listed under UL File E84967 and are CSA Certified under CSA Master Contract 153555.
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-Trip™ 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
Additional
- Current Rating
- 50 A
- Breaking Capacity
- 10 kA 120/240 V AC
- Poles
- 2
- Circuit Breaker Type
- Standard
- Electrical Connection
- Box lugs
- Tightening Torque
- 5 N.m
- Width
- 38 mm
- Net Weight
- 0.249 kg
- Rohs Exemption Information
- Yes
- Eu Rohs Directive
- Compliant with Exemptions
- Mercury Free
- Yes
- Halogen Content Performance
- Halogen free product
- Warranty
- 18 months
- Range Of Product
- QO
Voltage Rating120/240 V AC
Ambient Air Temperature For Operation40 0C
Mounting TypeBolt-on
Circuit Breaker ApplicationHACR rated
Wire SizeAWG 8 to AWG 2 copper or aluminum
Height79 mm
Depth74 mm
Product CertificationsUL listed, CSA
China Rohs RegulationProduct out of China RoHS scope
Sustainable Offer StatusGreen Premium product
Toxic Heavy Metal FreeYes
Reach RegulationContains SVHC above threshold
Product Or Component TypeMiniature circuit-breaker
Number Of Spaces Required2
Accessories
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CAD
$117.60
/ EA
Available to Order
Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST
Company Stock:
0
Loading dialog...
Looking to buy a large quantity?
To view product inventory
CAD$117.60/ EA
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