Built for commercial and industrial power distribution, the Square D QOB360 provides 60 amps of thermal-magnetic protection. This three-pole miniature circuit breaker is rated for 240VAC systems and delivers a 10kAIC interrupting capacity. It bolts securely into Square D NQ and NQOD panelboards, ensuring a stable connection. The unit includes the signature Visi-Trip red indicator window to quickly identify tripped circuits, and is fully HACR rated for HVAC applications.
Is the QOB360 compatible with legacy NQO or NQOB panelboards?
Yes. In addition to modern NQ and NQOD panels, the QOB360 is backward compatible for bolt-on installation in legacy Square D NQO and NQOB distribution panelboards.
What is the difference between the QOB360 and the QO360 circuit breakers?
The QOB360 utilizes a bolt-on mounting connection designed for commercial and industrial panelboards. The QO360 is the plug-on equivalent, which is primarily intended for use in residential QO load centers.
How much panel space does the QOB360 require?
This 3-pole miniature circuit breaker requires three standard 0.75-inch spaces, taking up a total width of 2.25 inches on the panel busbar.
Is the QOB360 rated for HVAC equipment protection?
Yes, the QOB360 is fully HACR rated, meaning it is certified to provide safe overcurrent protection for heating, air conditioning, and refrigeration motor loads.
What is the recommended wire torque for the QOB360 box lugs?
The terminal box lugs should typically be torqued to 44.3 lb-in (5 N.m) when using 8 AWG to 2 AWG copper or aluminum wire. Always verify the specific torque specifications printed directly on the side of the breaker prior to installation.
Does the QOB360 include a visual trip indicator?
Yes, it is equipped with the Square D Visi-Trip feature. If the breaker trips due to an overcurrent or short circuit, the handle rests in the middle position and a highly visible red flag appears to help quickly identify the faulted circuit.
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Shipping
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 205 reviews.
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Rated 4.9 out of 5 stars
Based on 205 reviews
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Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 3/11/26
Customers say these electrical breakers arrive exactly as ordered and work perfectly for their intended applications. They consistently praise the competitive pricing, which many report is significantly lower than local suppliers. Fast shipping and prompt delivery are frequently highlighted, with many receiving orders within days or even next-day delivery for urgent needs. The breakers arrive well-packaged and in excellent condition. Many reviews emphasize the company's extensive inventory availability, particularly for hard-to-find breakers. One customer experienced difficulty with order cancellation and was charged a restocking fee, which caused dissatisfaction.