Square D QOU230 - 30 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D QOU230: a 30-amp, 240-volt, 2-pole bolt-on molded case circuit breaker built to deliver dependable branch-circuit protection in panelboards and loadcenters. Its secure bolt-on mounting creates a rigid, vibration-resistant bus connection, so you can count on consistent performance even in demanding environments. The included thermal-magnetic trip unit provides stable, repeatable protection by combining precise overload sensing with rapid short-circuit response.

Key benefits

• secure bolt-on mounting for a solid, vibration-resistant bus connection that stays put through the life of the install.
• Thermal-magnetic trip delivers reliable protection: the thermal element handles sustained overloads, while the magnetic element reacts quickly to short circuits.
• 2-pole 30A / 240V design protects 240V branch circuits with a single, common disconnect for safe, convenient carry-through wiring.
• OEM-compatible—engineered to drop into matching Square D loadcenters and panelboards for clean, dependable operation.
• Versatile applications—well-suited for residential, commercial, and light industrial electrical setups where robust protection is essential.

Applications and use cases

Use the QOU230 when upgrading or expanding panelboards and loadcenters that require bolt-on protection. It’s an ideal replacement in existing Square D systems, providing a straightforward, in-spec solution for 240V circuits that demand 30A protection. Whether you’re wiring HVAC feeders, garage or workshop outlets, or other 240V equipment, this breaker helps prevent damage from overcurrent and short circuits while keeping installation neat and compliant.

Technical snapshot

• Manufacturer: Square D
• Part Number: QOU230
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 30A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why this matters in your panel

Choosing the Square D QOU230 means selecting a breaker designed for longevity and consistent protection in real-world conditions. The bolt-on style minimizes loosening risks in panels subject to vibration, while the thermal-magnetic trip unit provides predictable response across temperature variations. With OEM compatibility, you can expand or refurbish panels without sacrificing performance or safety. For installers and facility managers, this breaker offers a reliable, straightforward path to compliant, long-lasting 240V circuit protection that you can trust in residential, commercial, and light industrial settings.