QOB240 - Square D 40 Amp 2 Pole 120/240VAC Bolt-On Miniature Circuit Breaker, QO Series, 10kAIC, Thermal Magnetic Trip, UL/CSA Certified

Product Overview

The QOB240 is a Square D QO series 2‑pole miniature circuit breaker rated 40 amps for 120/240 VAC systems. It is a bolt‑on style breaker with a thermal‑magnetic trip and a 10 kAIC interrupting rating.

UL and CSA listings are indicated for this model. Contact Lumera Electric to request a quote and confirm pricing and availability.

Key Features

• 40 A, 2‑pole thermal‑magnetic circuit breaker for 120/240 VAC
• QO series bolt‑on form factor
• 10 kAIC interrupting rating
• UL and CSA listed

What this breaker does

The QOB240 provides overcurrent protection for two poles in 120/240 VAC distribution circuits. It uses thermal and magnetic trip elements to respond to overload and short‑circuit conditions.

• Common‑trip 2‑pole protection for branch circuits
• Uses thermal‑magnetic trip mechanism

Electrical rating and interrupting capacity

Rated for 40 amps at 120/240 VAC with a 10 kAIC interrupting rating. These values indicate the nominal current rating and the interrupting capacity specified for the model.

• Voltage rating: 120/240 VAC
• Current rating: 40 A
• Interrupting rating: 10 kAIC

Form factor and mounting

The QOB240 is a QO series bolt‑on miniature circuit breaker. The bolt‑on configuration is intended for use in panels designed to accept QO bolt‑on breakers.

• Mounting style: bolt‑on (QO series)
• Configuration: 2‑pole breaker

Certifications and safety listings

The product listing indicates UL and CSA certifications. Follow equipment installation instructions and local electrical codes when installing.

• Listings: UL, CSA

Before you order

Verify panel compatibility and confirm the correct model and quantity before ordering.

• Confirm the panel accepts QO bolt‑on breakers
• Confirm required amperage, pole count and interrupting rating
• Request a quote from Lumera Electric for pricing and availability

Before You Order

Confirm the model and quantity and verify panel compatibility before ordering.

• Confirm the panel accepts QO bolt‑on breakers
• Verify required amperage, pole count and interrupting rating
• Request a quote from Lumera Electric for pricing and availability

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for QOB240 - Square D 40 Amp 2 Pole 120/240VAC Bolt-On Miniature Circuit Breaker, QO Series, 10kAIC, Thermal Magnetic Trip, UL/CSA Certified. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.