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The QOB315 by Square D is a reliable 3-pole, 15 Amp bolt-on circuit breaker designed for 240V systems. Perfect for various applications, this breaker promises performance and safety with its durable construction. Ideal for both residential and commercial use, ensure your electrical systems stay protected with the QOB315.
No. The QOB315 is a bolt-on breaker, meaning it fastens mechanically to the bus bar with bolts, while the QO315 is a plug-on (snap-in) breaker. They are not interchangeable — always match the breaker style (bolt-on vs. plug-on) to what your specific panelboard requires.
The QOB315 is rated 240V and is commonly used in single-phase 3-wire (240/120V) residential and light commercial panels. For true 3-phase 208Y/120V or 480V applications, a different Square D breaker rated for those systems would be required. If you're unsure, share your panel specs with us and we'll point you to the right breaker.
Yes — sourcing obsolete and hard-to-find breakers is one of our specialties at Northern Breaker Group. We maintain extensive inventory of legacy Square D QOB-series breakers across our Calgary, Edmonton, and Vancouver locations. Contact us for a quote and availability check.
