Square D QOB330GFI - 30 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D QOB330GFI—a dependable 30A, 240V, 3-pole bolt-on molded case circuit breaker engineered to protect branch circuits in panelboards and load centers. Built for reliability in residential, commercial, and light industrial applications, this breaker delivers precise, repeatable protection when it matters most.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection for consistent electrical performance in demanding environments.
• Thermal-magnetic trip unit delivers stable overcurrent and short-circuit protection, reducing nuisance trips and ensuring dependable interruption when faults occur.
• Three-pole, 30A, 240V configuration designed to guard multi-phase circuits with balanced protection across all conductors.
• OEM-compatible design works with matching Square D load centers and panelboards for straightforward installation, upgrades, or replacements.
• Versatile application ideal for residential panels, commercial distribution, and light industrial systems where reliable circuit protection is critical.

Why choose the QOB330GFI? This molded case circuit breaker combines rugged construction with precise trip performance to keep electrical systems safe and uptime high. Its bolt-on mounting simplifies field upgrades and service, while the thermal-magnetic trip unit provides repeatable protection across varying loads and environmental conditions. If you’re upgrading a panelboard or replacing an aged breaker in a Square D ecosystem, the QOB330GFI offers a seamless, dependable fit.

Technical at a glance

• Manufacturer: Square D
• Part Number: QOB330GFI
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 30A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Quick installation notes: verify compatibility with your OEM panelboard, ensure proper bus connection alignment, and follow standard electrical safety practices during mounting and wiring. The Square D QOB330GFI is a practical, long-term solution for reliable circuit protection where performance and compatibility matter most.