Square D QBM22175TN - 175 A, 2-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Square D QBM22175TN — a 175A, 2-pole bolt-on molded case circuit breaker designed to deliver reliable branch circuit protection in panelboards and load centers. Built to endure in demanding electrical environments, this device provides precise protection for high-current circuits while integrating smoothly with compatible OEM panels.

• Secure bolt-on mounting ensures a rigid, vibration-resistant connection to the bus, reducing movement that can compromise protection over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance across a range of temperatures and load conditions, helping prevent nuisance trips while safeguarding circuits.
• 2-pole design protects both live conductors simultaneously, ensuring balanced, coordinated shutdown in the event of a fault.
• 175A rating provides ample headroom for high-current branch circuits, making it suitable for substantial residential, commercial, and light industrial loads.
• Compatibility with matching OEM load centers and panelboards simplifies integration, reduces adaptation concerns, and helps maintain a clean, reliable panel layout.

Why this breaker matters for your electrical system

The Square D QBM22175TN is purpose-built for dependable branch circuit overcurrent and short-circuit protection. In panelboards and load centers, it acts as a critical line of defense, quickly interrupting fault currents to minimize damage to wiring and connected equipment. Whether you’re upgrading an existing installation or stocking parts for service calls, this bolt-on MCCB offers a robust, industry-standard solution that aligns with residential, commercial, and light industrial projects.

Ideal use cases

Use the QBM22175TN wherever you need reliable protection for high-amperage branch circuits in panelboards or load centers. It’s particularly well-suited for applications with heavy or variable loads, such as HVAC, motors, or large lighting systems, where secure mounting and predictable trip behavior are essential.

Technical snapshot

• Manufacturer: Square D
• Part Number: QBM22175TN
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 175A
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical considerations and maintenance tips

For best results, pair this breaker with compatible OEM panels to ensure seamless electrical performance and warranty alignment. When installing, follow standard electrical practices for bolt-on MCCB mounting, and verify torque and wiring guidelines per your panel’s documentation. Regularly inspect the panel connections for signs of wear or vibration, and replace any components that show degradation to maintain reliable protection over time.