QOB340VH - Square D 40 Amp 3 Pole 120/240VAC Mini Bolt-On Circuit Breaker, QOB Series, 22kA Interrupt Rating, Thermal Magnetic Trip

Product Overview

The QOB340VH is a Square D QOB series 3‑pole mini bolt‑on circuit breaker rated 40 amps for 120/240VAC systems. It uses a thermal‑magnetic trip mechanism and has a 22 kA interrupting rating.

Sold as a single breaker (part number QOB340VH). Request a quote for pricing and availability.

Key Features

• 40 A rating, 3‑pole for 120/240VAC
• Thermal‑magnetic trip
• 22 kA interrupting rating
• Mini bolt‑on mounting style

What this breaker does

The QOB340VH provides overcurrent protection for three‑pole 120/240VAC circuits. Its thermal‑magnetic trip mechanism combines thermal (overload) and magnetic (short‑circuit) responses. The breaker is rated with a 22 kA interrupting capacity.

• Three‑pole configuration for 120/240VAC distribution
• Thermal‑magnetic trip combines overload and short‑circuit response

Electrical ratings and trip characteristics

Key ratings to confirm compatibility: 40 A ampacity, 120/240 VAC voltage, thermal‑magnetic trip, and 22 kA interrupting rating.

• Ampacity: 40 A
• Voltage: 120/240 VAC
• Interrupting capacity: 22 kA
• Trip type: Thermal‑magnetic

Mounting style and mechanical configuration

This unit is a mini bolt‑on breaker from the QOB series intended for bolt‑on installation. Verify that the receiving panel or enclosure accepts QOB series mini bolt‑on breakers and that mechanical and terminal clearances meet your installation requirements.

• Mounting: Mini bolt‑on
• Poles: 3

Selection and ordering guidance

Confirm the QOB340VH matches your system voltage, required ampacity, interrupting rating, and mounting style before ordering. This listing represents a single SKU: QOB340VH.

• Verify panel compatibility with QOB series mini bolt‑on breakers
• Confirm available fault current at the installation site does not exceed the breaker’s 22 kA rating
• Request a quote for pricing and availability

Before You Order

Confirm model number, system voltage, ampacity, interrupting rating, and mounting compatibility before ordering; request a quote for pricing and availability.

• Verify your panel accepts QOB series mini bolt‑on breakers
• Confirm available fault current does not exceed 22 kA

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for QOB340VH - Square D 40 Amp 3 Pole 120/240VAC Mini Bolt-On Circuit Breaker, QOB Series, 22kA Interrupt Rating, Thermal Magnetic Trip. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.