Square D QDA221754 - 175 A, 2-Pole Plug-In Circuit Breaker | AmpState

Square D QDA221754 is a 175A, 2-pole plug-in molded case circuit breaker designed to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to fit seamlessly into the OEM ecosystem, it ensures safe, code-compliant protection for everyday electrical systems.

• Fast plug-in connection: quick installation and easy replacement minimizes downtime during panel servicing.
• Thermal-magnetic trip unit: provides stable, repeatable protection characteristics that respond to both overloads (thermal) and short circuits (magnetic).
• OEM-compatible: designed to work with matching Square D load centers and panelboards to maintain proper fit and electrical coordination.
• Versatile applications: suitable for residential, commercial, and light industrial panel setups needing robust 2-pole protection up to 175A.

Technical snapshot

• Manufacturer: Square D
• Part Number: QDA221754
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 175 A
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Who is this for? For electricians and facility managers upgrading or maintaining panelboards where a reliable, high-current, 2-pole plug-in breaker is required. If you’re expanding a load center or replacing an aging breaker, the Square D QDA221754 provides a trusted, OEM-compatible solution designed to integrate with existing protection schemes.

Practical usage and care tips:

• Before installation, confirm the panelboard accepts a 2-pole plug-in breaker in the 175A range and that the replacement matches the OEM part number and trip characteristics.
• Keep the plug-in connection clean and free of corrosion; handle with the power off and use proper electrical PPE.
• Stock spares for service windows in commercial spaces to minimize downtime during panel servicing.

Why choose a Square D QDA221754 over alternative breakers? The combination of a fast plug-in connection, a thermal-magnetic trip unit, and explicit OEM compatibility ensures you’re not just buying a breaker—you’re investing in consistent protection coordination, streamlined maintenance, and long-term reliability for your electrical distribution system.