Square D QOB220GFI - 20 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D QOB220GFI—a purpose-built 20 A, 240 V, 2-pole bolt-on molded case circuit breaker designed to safeguard your electrical system with precision and reliability. Built for dependable branch circuit overcurrent and short-circuit protection, it’s the smart choice for panelboards and load centers in homes and light commercial settings.

• Bolt-on mounting delivers a rigid, vibration-resistant bus connection, reducing wear and loosening over time for a consistently secure fit.
• Thermal-magnetic trip unit provides stable, repeatable protection across varied temperatures and loads, helping prevent nuisance trips while reacting quickly to dangerous fault conditions.
• 2-pole, 20 A, 240 V configuration protects multi-wire branch circuits and high-load 240 V appliances with coordinated, predictable performance.
• OEM-compatible design works with matching Square D load centers and panelboards, ensuring proper fit, electrical characteristics, and seamless integration.
• Versatile application ideal for residential, commercial, and light industrial environments where reliable circuit protection and long-term durability matter.

The QOB220GFI is a thermal-magnetic molded case circuit breaker engineered to handle the demanding demands of real-world electrical systems. Its bolt-on format not only simplifies installation in compatible panels but also contributes to a solid bus connection that maintains performance even in vibration-prone installations.

Use cases include upgrading existing panelboards to upgrade overcurrent protection, adding a dedicated 240 V circuit, or replacing aging breakers in residential or light commercial service panels. With a 20 A, 240 V, 2-pole rating, it’s well-suited for mid-range loads such as central air systems, water heaters, and other 240 V equipment, while maintaining robust protection against short circuits and overloads.

Practical tips: confirm your panelboard is compatible with bolt-on breakers from the same family, and verify that the panel is rated for 20 A 240 V circuits. Regularly inspect mounting hardware to ensure the bolt-on connection remains tight, preserving both safety and performance over time.