Square D QBA221754 - 175 A, 2-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D QBA221754 — a 175 A, 2-pole plug-in molded case circuit breaker engineered to shield panelboards and load centers from overcurrent and short-circuit events. Built for dependable branch circuit protection, this unit helps keep electrical systems safe, up to code, and ready to perform when it matters most.

Designed for fast, downtime-minimized installation, the plug-in connection snaps into compatible OEM load centers in seconds, making swaps or replacements quick and straightforward without complicated wiring. Its thermal-magnetic trip unit delivers stable, repeatable protection by combining a thermal element for overloads with a magnetic trip for short circuits, ensuring predictable response under fault conditions.

• Amperage rating: 175 A
• Number of poles: 2
• Mounting style: Plug-in, molded case design
• Trip technology: Thermal-magnetic (overload protection with magnetic short-circuit protection)
• Application: Branch circuit protection for residential, commercial, and light industrial panels
• Compatibility: Matches OEM load centers and panelboards
• Installation benefit: Quick replacement with minimal downtime

This breaker is ideal for panel upgrades, service panel replacements, or new installations where robust, reliable protection is essential. Use it to safeguard feeders and branch circuits for lighting, outlets, or small equipment in commercial spaces, or as a main/sub-feed protector in residential settings.

Compared with other protection options, the QBA221754’s plug-in design reduces field wiring and alignment hassles, while its precise thermal-magnetic trip curve minimizes nuisance trips and maintains consistent performance across varying ambient temperatures. It’s a practical, long-term solution for reliable electrical distribution.

Technical details at a glance: Part number QBA221754; 2-pole; 175 A; plug-in molded case; thermal-magnetic trip; designed for compatibility with Square D and OEM panelboards. Available from AmpState, your trusted source for dependable electrical components.