Square D QOB215 - 15 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Square D QOB215 is a purpose-built, 15A, 240V, 2-pole bolt-on molded case circuit breaker designed to deliver reliable branch circuit protection in panelboards and loadcenters. Built for durability and consistent performance, it’s a smart choice for electricians and DIY enthusiasts tackling residential, commercial, or light industrial electrical layouts.

Why choose the QOB215 for your panel?

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, keeping critical circuits stable even in environments with movement or vibration.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit trips for fast response under fault conditions.
• OEM-compatible design is engineered to work seamlessly with matching Square D OEM load centers and panelboards, ensuring reliable fit and electrical performance.
• Versatile across applications ideal for residential subpanels, commercial wiring, and light industrial circuits needing dependable 2-pole protection on a 240V supply.

Technical snapshot

• Manufacturer: Square D
• Part Number: QOB215
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and practical applications

Install the QOB215 in panelboards or loadcenters serving lighting, receptacle circuits, or small machinery in homes, offices, retail spaces, or workshops. Its bolt-on design makes it a robust option for panels that experience regular door openings, panel movement, or minor vibrations. The 2-pole configuration ensures both live conductors are simultaneously protected on 240V circuits, reducing the risk of arcing and electrical faults.

What makes it stand out

This breaker isn’t just about meeting a spec sheet—it's about dependable protection you can count on when it matters most. The bolt-on mounting minimizes loose connections over time, while the thermal-magnetic trip unit provides predictable, fast trip performance across a range of fault conditions. When you pair it with a compatible Square D load center, you’re investing in a cohesive, system-grade protection solution designed for long-term reliability.

Buying guidance

Choose the Square D QOB215 when you need a compact, reliable 2-pole 15A protection device that fits standard panelboard or loadcenter installations. It’s particularly well-suited for projects where vibration resistance and consistent trip characteristics are priorities, and where compatibility with OEM enclosures ensures smooth, code-compliant integration.