Square D QOB115GFI5237 15A 1P 120V Circuit Breaker, QO, GFCI, Bolt-On | AmpState

The Square D QOB115GFI5237 is a dedicated GFCI bolt-on circuit breaker built for 120V residential and light commercial panelboards and load centers. With a 15A, 1-pole design, this part delivers reliable ground-fault protection where sensitive outlets and wet or damp locations require extra safety. It’s a smart choice for maintenance teams, panel builders, and spare inventory scenarios where a precise part-number match matters.

Key specifications at a glance

• Manufacturer: Square D
• Part Number: QOB115GFI5237
• Type: Circuit Breaker with GFCI protection
• Amperage: 15 A
• Poles: 1
• Voltage: 120V
• Mounting: Bolt-On (QO series)
• Series: QO

Why this GFCI bolt-on breaker stands out

Ground-fault protection is essential in spaces where moisture or stray contact could create shock risk. The QOB115GFI5237 integrates cleanly into QO panelboards, delivering fast, reliable interruption of circuits when a ground fault is detected. Its bolt-on design provides a secure, vibration-resistant connection ideal for panel assemblies in both new builds and retrofits.

Ideal use cases and scenarios

• Protecting kitchens, bathrooms, laundry rooms, and outdoors where outlets are exposed to moisture
• Upgrading existing panelboards to add GFCI protection for dedicated circuits
• Spare inventory for panel builders and maintenance teams to minimize downtime
• Replacement parts where exact part-number matching ensures quick fit and continuity

Compatibility and installation tips

Designed for QO panelboards, this bolt-on 1-pole breaker fits compatible Square D systems without requiring adapters. If you’re unsure about exact fit for a specific panel, AmpState offers direct assistance to verify compatibility and ensure a seamless swap. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Practical benefits you’ll notice

• Clear GFCI protection for circuits serving moisture-prone areas helps meet code requirements and enhances safety
• Compact, reliable 15A protection ideal for standard branch circuits within residential and light commercial setups
• Bolt-On mounting provides solid mechanical stability in crowded or vibration-prone panel environments
• Direct part-number match minimizes installation errors and speeds up procurement and stocking decisions

When you need a precise, ready-to-install GFCI circuit breaker for QO panel systems, the Square D QOB115GFI5237 delivers dependable protection, straightforward installation, and compatibility assurance—made easy by AmpState’s support for exact part-number matching and fit confirmation.