Square D QBA221102 110A 2P 240V Circuit Breaker, Plug-On | AmpState

Engineered for dependable circuit protection, the Square D QBA221102 is a 2-pole, 240V plug-on circuit breaker rated at 110 A. Built for panelboards, load centers, and electrical distribution, this unit delivers reliable performance where precise fit and quick replacement matter most. It’s the smart choice for maintenance teams, panel builders, and spare inventories that require an exact part-number match.

• Plug-On simplicity: Direct plug-on installation on compatible bus systems for faster service restoration.
• Exact part-number fit: Model QBA221102 ensures compatibility in configurations that demand a precise 2P, 240V, 110A solution.
• Powerful 2-pole, 240V protection: Safeguards circuits that operate at 240V with a robust current rating suitable for higher-demand subcircuits.
• Rugged, dependable construction: Square D components designed for consistent performance in everyday electrical work and distribution panels.
• AmpState support: Available from AmpState with help confirming fit or matching a part number to your specific panel model.

This breaker is ideal for replacing a failed 2-pole 240V unit in residential or commercial subpanels, or for stocking as a reliable spare in panel-building projects where a direct part-number match is essential. Use case scenarios include distributing 240V circuits to heavy equipment, HVAC subcircuits, and large appliances where consistent protection and fast swap-out are priorities.

Why choose this Square D QBA221102 over generic alternatives? The exact 110 A, 2-pole, 240V configuration from a trusted brand ensures you’re getting a component designed to fit, function, and endure in standard Square D installations. If you’re unsure about compatibility, send us a message and we’ll help you confirm fit and guide you to the right part for your panel model.