Square D QO330GFI - 30 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D QO330GFI — a 30A, 240V, 3-pole plug-in molded case circuit breaker built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. This variant blends quick installation with durable protection, designed for residential, commercial, and light industrial electrical layouts.

Fast, hassle-free installation

• Plug-in connection enables fast installation and effortless replacement, minimizing downtime during panel upgrades or maintenance.
• Designed for a plug-in molded case housing for robust, vibration-resistant performance in demanding environments.

Precise, reliable protection

• Thermal-magnetic trip unit delivers stable, repeatable protection across temperature variations, guarding against both overloads and short circuits.
• Three-pole design (3-pole) on a 240V circuit handles multi-wire or three-conductor applications with coordinated protection.

OEM-ready compatibility

• Specifically engineered to be compatible with matching OEM load centers and panelboards, ensuring seamless fit and labeling.

Where to use

This 30A, 240V device is ideal for protecting branch circuits in residential panels, light commercial installations, and small industrial equipment setups where 240V loads or three-conductor circuits require dependable interruption protection.

Technical snapshot

• Manufacturer: Square D
• Part Number: QO330GFI
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 30A
• Voltage rating: 240V
• Number of poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

For electricians upgrading or expanding a panel, the QO330GFI provides a reliable, repeatable protection solution that integrates smoothly with existing equipment. If you're equipping a new subpanel or replacing a worn-out breaker, this 3-pole plug-in option keeps your system compliant while delivering consistent performance under load.