Square D QO115HM - 15 A, 120 V, 1-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D QO115HM, a dependable 15A, 120V, 1-pole plug-in molded case circuit breaker designed to protect branch circuits in panelboards and load centers. Built for fast, tool-light installation and reliable performance, this breaker is a smart upgrade for residential panels, light commercial sets, and simple industrial sites.

• Fast plug-in connection for quick installation and effortless replacement, reducing downtime during upgrades or service calls.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining a thermal element for gradual overcurrent with a magnetic element for instantaneous response to severe faults.
• OEM-compatible design engineered to fit seamlessly with matching Square D load centers and panelboards for a reliable, no-hassle fit.
• Versatile application ideal for 120V single-phase circuits in homes, small businesses, and light industrial environments.
• Compact, durable construction 1-pole molded case format built to endure the daily demands of panel installations while providing clear fault indication and easy reset.

Why this breaker stands out: the QO115HM isn’t just a switch that interrupts current—it’s a precision safety device calibrated for consistent performance across a range of loads. The thermal-magnetic trip system minimizes nuisance trips on normal demand while still delivering rapid disconnects during short circuits. The plug-in design simplifies panel maintenance, letting you swap breakers quickly without disturbing surrounding components.

Ideal for a variety of setups

Whether you’re updating an older panel, performing routine electrical service, or outfitting a new installation, the QO115HM provides dependable protection for lighting circuits, receptacle runs, and other 120V branch circuits. Its 1-pole configuration is perfectly suited for single-phase distribution, making it a practical choice for almost any 120V application in residential, commercial, or light industrial settings.

Technical snapshot

• Manufacturer: Square D
• Part number: QO115HM
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 15A
• Voltage rating: 120V
• Number of poles: 1
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection