Documentation & Downloads
Square D QOB340 Mini Circuit Breaker 40A 3 Pole 10kA Bolt-On Mount 120/240VAC
- MPN: QOB340
- UPC: 785901417149
- PPN: SCH-QOB340
CAD
$372.15
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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
QO and QOB one, two and three pole thermal magnetic circuit breakers provide overcurrent protection and switching on ac and dc systems. These circuit breakers have an over center, trip free toggle mechanism with quick make, quick break action and positive handle indication. They also have VisiTrip trip indication, which provides a visual indication that the circuit breaker has tripped and interrupted the circuit. This 3 pole QO circuit breaker is rated at 40A 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. QO circuit breakers are UL Listed under UL File E84967 and are CSA Certified under CSA Master Contract 153555
Features
- Specifically engineered with a robust bolt-on mounting mechanism, this circuit breaker creates a high-torque, permanent mechanical connection to the NQ or NQOD load center bus bar. This eliminates the risk of vibration-induced loosening common in industrial environments, ensuring uninterrupted power flow and long-term reliability for your mission-critical electrical infrastructure.
- Designed for 3-phase applications, the internal common trip bar ensures that if a fault occurs on any single phase, all three poles disconnect simultaneously. This vital safety feature prevents "single-phasing" conditions which can cause expensive motors and commercial HVAC compressors to overheat and fail prematurely, saving you thousands in equipment replacement costs.
- Rated for 40 Amps at 240V AC, this thermal-magnetic breaker is the industry standard for protecting medium-duty machinery, commercial kitchen appliances, and multi-wire branch circuits. It provides sensitive protection against both short circuits and sustained thermal overloads, maintaining the delicate balance between high-performance output and circuit safety.
- The integrated Visi-Trip window displays a high-visibility red indicator flag when the breaker has tripped due to an electrical fault. This allows facility managers to scan dense electrical panels at a glance, drastically reducing troubleshooting time and ensuring that power can be restored to production lines or office blocks with minimal operational delay.
- Fully tested to meet UL 489 and CSA C22.2 standards, this QO-style breaker is a genuine Schneider Electric / Square D component that satisfies the most stringent insurance and municipal code requirements. Utilizing genuine OEM parts for your electrical distribution ensures your facility remains compliant with National Electrical Code (NEC) standards and maintains your property's safety certifications.
Documentation & Downloads
Specifications
Additional
- Current Rating
- 40 A
- Breaking Capacity
- 10 kA at 120/240 V AC
- Circuit Breaker Type
- standard thermal magnetic
- Number of Spaces
- 3
- Electrical Connection
- box lugs
- Tightening Torque
- 5 N·m (44.25 lbf·in)
- Ambient Operating Temperature
- 40 °C (104 °F)
- Country of Origin
- Mexico
Voltage120/240 V AC, 50/60 Hz
Poles3
Mounting Typebolt-on
DimensionsHeight 79 mm (3.11 in), Width 57 mm (2.24 in), Depth 74 mm (2.91 in)
Wire SizeAWG 8 to AWG 2 copper or aluminum
Net Weight0.363 kg (0.80 lb)
ComplianceUL Listed, CSA Certified, RoHS Compliant with Exemptions, Mercury Free, Halogen Free, Toxic Heavy Metal Free
Accessories
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CAD
$372.15
/ EA
Available to Order
Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST
Company Stock:
0
Looking to buy a large quantity?
To view product inventory
CAD$372.15/ EA
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