Square D | QOB230SWN | Circuit Breaker | 30A | 2-Pole | 120V | 10kA | Bolt-On

Meet the Square D QOB230SWN circuit breaker—a bolt-on, 30-amp, 2-pole protection device built for reliability in maintenance, retrofit, and replacement projects. With a 120-volt rating and a robust 10 kA interrupting capacity, this breaker is designed to quickly clear faults and safeguard wiring, devices, and loads in a variety of panel configurations.

• Amperage: 30 A
• Poles: 2-Pole
• Voltage: 120 V
• Interrupting Capacity: 10 kA
• Mounting: Bolt-On

Why this bolt-on breaker stands out

The bolt-on design offers a secure mechanical connection that’s less prone to loosening from vibration, making it ideal for panels that require bolted-in protection. This is particularly important in retrofit or replacement scenarios where a precise form factor and reliable trip performance are essential to maintain panel integrity and electrical safety.

Best use scenarios

• Maintenance or replacement of aging breakers in Square D panels that accept bolt-on devices.
• Retrofits where a precise 30 A, 2-pole, 120 V solution is required to protect branch circuits.
• Residential or light commercial installations needing a dependable 30 A protection device with a common-trip design.
• Load assessments where a high interrupting capacity (10 kA) provides a safety margin for fault conditions.

Compatibility and procurement tips

To ensure a correct fit, use the exact part number as the compatibility reference. QOB230SWN is the best reference for matching panels and rail configurations. Always confirm fit and ratings before ordering to avoid mismatches in form factor or electrical specifications.

Installation notes for professionals and diligent DIYers: turn off power to the panel, verify absence of voltage, and follow local electrical codes. Bolt-on breakers require a compatible panel layout and mounting hardware; if your panel is designed for bolt-on devices, this 30 A, 2-pole unit will provide reliable protection for your circuits while delivering straightforward serviceability for future upgrades or replacements.