Square D QJA32175 - 175 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D QJA32175—a 175A, 240V, 3-pole plug-in molded case circuit breaker engineered for dependable branch-circuit overcurrent and short-circuit protection in panelboards and loadcenters. Its fast plug-in connection lets you install or replace without a lengthy downtime, so service calls and panel upgrades stay efficient.

Built for performance in real-world environments, this breaker uses a thermal-magnetic trip unit to deliver stable, repeatable protection. That means fewer nuisance trips during temporary surge events, and consistent response when your circuits demand it most. The 3-pole design is ideal for coordinating with three-phase or multi-wire configurations in the right OEM panels.

Key features designed to keep your electrical system running smoothly:

• Fast plug-in connection for quick installation and replacement, reducing labor time and downtime.
• Thermal-magnetic trip unit provides stable, repeatable protection against overloads and short circuits.
• Compatibility with matching OEM loadcenters and panelboards for a precise fit and dependable performance.
• Versatile application suitable for residential, commercial, and light industrial environments where reliable protection matters.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: QJA32175
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 175A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Upgrading or replacing breakers in residential panelboards or commercial loadcenters that require reliable 3-pole protection.
• Integrating with OEM equipment to maintain panel compatibility and predictable protection characteristics.
• Installing in new or retrofit projects where quick plug-in installation minimizes site downtime.

Why choose this breaker

When you need a trusted, purpose-built solution for branch-circuit protection, the QJA32175 delivers. Its plug-in design reduces installation time, while the thermal-magnetic trip mechanism balances fast response with stability, helping to prevent unnecessary outages without compromising safety. For professionals working with Square D panels, this unit provides a seamless fit and consistent performance across residential, commercial, and light industrial applications.