Square D QBA221004 - 100 A, 2-Pole Plug-In Circuit Breaker | AmpState

Experience reliable protection with the Square D QBA221004 — a 100 A, 2-pole plug-in molded case circuit breaker built to safeguard panelboards and load centers. This plug-in design delivers fast installation and effortless replacement, helping you minimize downtime during upgrades or service work while maintaining trusted Square D protection standards.

Why this breaker stands out

• Fast plug-in connection: Quick coupling to compatible panelboards reduces installation time and simplifies future replacements, so you can restore service with minimal disruption.
• Thermal-magnetic trip unit: Combines precise thermal protection for routine overloads with instantaneous magnetic protection for short circuits, giving stable, repeatable protection performance across a range of loads.
• OEM-compatible design: Specifically engineered to work with matching Square D OEM load centers and panelboards, helping ensure reliable fit and coordinated protection across your system.
• Versatile application: Suitable for residential, commercial, and light industrial environments, making it a practical choice for a variety of electrical distributions.
• Two-pole, 100 A configuration: Delivers coordinated protection on both hot legs with a common trip, ideal for circuits that require robust, branch-circuit overcurrent and short-circuit protection.

Technical snapshot

• Manufacturer: Square D
• Part number: QBA221004
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100 A
• Number of poles: 2
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases

• Stocking a service panel upgrade or replacement project where rapid plug-in installation minimizes panel downtime.
• Protecting residential feeders or commercial light-duty circuits that demand reliable thermal-magnetic protection against overloads and faults.
• Replacing a failed breaker in existing Square D panelboards and load centers to preserve system coordination and trip characteristics.

When you choose the QBA221004, you’re selecting a proven, dependable solution that aligns with your Square D ecosystem while delivering clear, actionable protection for everyday electrical demands.