Designed for commercial and industrial applications, the Square D QOB160 delivers reliable thermal-magnetic protection. This single-pole 60A device features the signature Visi-Trip indicator, allowing maintenance personnel to quickly spot tripped circuits in busy electrical rooms. It installs into standard NQ and legacy NQOD panelboards using a secure bolt-on mounting style. The box lug terminals accept 8-2 AWG aluminum or copper wiring. Rated for 10kAIC at 120/240VAC, it is HACR certified.
Can I install the QOB160 in a standard Square D QO load center?
No. The QOB160 features a bolt-on connection designed specifically for Square D NQ and legacy NQOD panelboards. Standard QO load centers require plug-on circuit breakers, such as the QO160.
What is the plug-on equivalent to the QOB160?
The Square D QO160 is the direct plug-on equivalent to the bolt-on QOB160. It shares the same 60A rating and thermal-magnetic trip functions but is designed for standard QO load centers.
What wire sizes and types are compatible with the QOB160 terminals?
The box lugs accept 8 AWG to 2 AWG conductors and are dual-rated for both aluminum and copper wire. The manufacturer specified tightening torque for these terminals is 44.3 lb-in (5 N.m).
Is the QOB160 rated for use in DC voltage systems?
Yes. In addition to its AC ratings, this breaker is rated for 48VDC applications with a 5kA interrupting capacity (5kAIC).
Does the QOB160 provide ground fault or arc fault protection?
No. This is a standard thermal-magnetic breaker that provides overload and short-circuit protection. It does not include built-in GFCI or AFCI circuitry.
Does this breaker feature a tripped circuit indicator?
Yes, Square D QOB breakers include the Visi-Trip indicator. This provides a clear visual flag on the face of the breaker when it has tripped due to an overcurrent or short-circuit event.
Is the QOB160 HACR rated for HVAC equipment?
Yes, this breaker is HACR rated, making it suitable for group motor applications like heating, air conditioning, and refrigeration equipment.
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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
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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.