Square D QOB325 - 25 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Square D QOB325 is built for dependable branch circuit protection in panelboards and load centers. This 25 A, 240 V, 3-pole bolt-on molded case circuit breaker is engineered to guard your electrical system against overloads and short circuits with consistent, repeatable performance.

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, helping maintain a reliable electrical path even in demanding environments.
• Thermal-magnetic trip unit provides stable, predictable protection by responding to both sustained overloads and sudden short circuits, reducing nuisance trips and enhancing safety.
• 3-pole design suits three-phase circuits common in commercial and light industrial applications, while fitting neatly into compatible OEM load centers and panelboards.
• Compatibility and versatility—designed to work with matching Square D OEM panels, ensuring a safe, consistent fit and straightforward installation.
• Application versatility suitable for residential, commercial, and light industrial electrical systems, making it a practical choice for retrofit projects, new builds, or panel maintenance.

Key specifications at a glance

• Manufacturer: Square D
• Part Number: QOB325
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 25 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical scenarios where the QOB325 shines include upgrading a panel to handle a growing load in a small commercial space, protecting feeders to critical equipment in a light industrial setting, or replacing a tired breaker in a residential panel where reliable, consistent trips are essential. Its bolt-on design simplifies installation in compatible panelboards, while the thermal-magnetic protection curve helps prevent damage from both minor overloads and sudden faults.

Choosing the Square D QOB325 means opting for a trusted, OEM-compatible solution that delivers robust protection, dependable operation, and a clear pathway for maintenance and future panel upgrades. If you’re safeguarding multiple circuits in a 3-phase environment or restoring reliability to a tired electrical panel, this 25 A, 240 V, 3-pole bolt-on breaker is the precise, purpose-built choice.