Square D | QH315 | Circuit Breaker | 15A | 3-Pole | 240V | Plug-In

The Square D QH315 circuit breaker is a reliable, drop-in solution engineered for maintenance, retrofit, and replacement projects where exact specifications matter. Built to match the QH-series plug-in design, this 15A, 3-pole unit delivers consistent overcurrent protection in 240V systems, making it a trusted choice for commercial and industrial panels that require precise compatibility.

• Amperage: 15A
• Poles: 3-Pole
• Voltage: 240V
• Type: Plug-In
• Part reference: QH315

Why choose the Square D QH315 for your panel

When you’re doing maintenance, retrofit, or replacement, compatibility matters as much as protection. The QH315 is designed to slot into panels that accept QH-style plug-in breakers, providing dependable overcurrent protection without the guesswork of mismatched parts. Using the exact part number—QH315—ensures you’re aligning with the panel’s intended specifications, helping you stay in code-compliant territory and reduce downtime from incorrect replacements.

Use cases and practical applications

• Maintenance on 240V electrical distributions where a 15A protection level is appropriate
• Retrofits to upgrade legacy panels to current, compatible plug-in breakers
• Replacement in existing Square D installations that specify a QH-series, 3-pole, 240V breaker

Fit, compatibility, and installation notes

Before ordering, confirm that your panel accepts plug-in breakers of the QH family and that the 15A, 3-pole, 240V ratings align with your system requirements. The part number QH315 is the most reliable reference for compatibility, helping you avoid misfits and ensuring safe, effective protection for your circuits.