Square D QDA221102 - 110 A, 2-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D QDA221102 — a 110 A, 2-pole plug-in molded case circuit breaker built to protect branch circuits in panelboards and load centers. This plug-in design enables fast, tool-free installation and straightforward field replacement, reducing downtime on service calls and upgrades.

Engineered with a thermal-magnetic trip unit, it delivers stable, repeatable protection by combining an automatic magnetic trip for short-circuit events with a thermal element that responds to sustained overcurrent. That means fewer nuisance trips and reliable protection for wiring and connected equipment.

Designed to be compatible with matching OEM load centers and panelboards, the QDA221102 integrates smoothly into your electrical platform for safe, consistent protection. It’s suitable for residential, commercial, and light industrial applications, covering everything from home service panels to small business setups and light manufacturing environments.

How it helps you

Use cases include protecting feeders and branch circuits in main panels, replacing a failed breaker during a maintenance window, or upgrading an older panel where a plug-in replacement speeds up installation and ensures correct protection characteristics.

Key specs at a glance

• Manufacturer: Square D
• Part number: QDA221102
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 110 A
• Number of poles: 2
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

AmpState offers this unit as a reliable plug-in replacement for compatible panelboards and load centers, ensuring you get the right fit and performance quickly.