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The QBH350 – EATON 3P50A 240V Bolt-On Breaker is designed for reliable performance in your electrical system. Featuring three poles and a 50A rating, this breaker ensures optimal protection for your circuits. Ideal for residential and commercial applications, it is built to withstand demanding environments while providing peace of mind.
Bolt-on breakers like the QBH350 physically bolt to the bus bar with a screw or fastener, providing a more secure mechanical and electrical connection compared to plug-in (clip-on) breakers. This makes them common in commercial panelboards and certain residential loadcentres designed specifically for bolt-on configurations. They are not interchangeable with plug-in style breakers even if the amperage and pole count match.
The QBH350 is rated for 240V and is a 3-pole breaker. In Canadian residential and light commercial installations, 3-pole 240V breakers are typically used in three-phase panelboards. If your application is single-phase, a 2-pole breaker would normally be used for 240V loads. Contact our team to confirm the right configuration for your specific system.
The QBH series from Eaton can be difficult to source through standard distribution channels, and certain configurations are considered obsolete or limited-availability. Northern Breaker Group specialises in hard-to-find and obsolete breakers — reach out to our Calgary, Edmonton, or Vancouver counters or request a quote online and we'll confirm current stock availability for the QBH350.
