Part of the BQ family, this 20-amp molded case circuit breaker provides robust overcurrent protection for commercial environments. The common trip mechanism ensures both poles open simultaneously during a fault. Engineered for compatibility, it mounts into Siemens P1, P2, and P3 panelboards using a dependable bolt-on connection. This model serves as a substitute for the standard BQ2B020, offering an exact fit.
Which Siemens panelboards accept the BQ2B020QX circuit breaker?
This 2-pole breaker is engineered to bolt directly into Siemens P1, P2, and P3 commercial panelboards.
What is the difference between the Siemens BQ2B020 and the BQ2B020QX?
The BQ2B020QX includes Quick Connect (Insta-Wire) lug terminals for faster wiring during installation. It is an exact fit and direct substitute for the standard BQ2B020 catalog number.
What are the acceptable wire gauges and materials for the BQ2B020QX terminals?
The load-side lugs accommodate 14-6 AWG copper (Cu) conductors or 12-6 AWG aluminum (Al) conductors.
What type of overcurrent protection does the BQ2B020QX provide?
It features a fixed thermal-magnetic trip unit that delivers both long-time and instantaneous (LI) trip functions to protect against overloads and short circuits.
Does the BQ2B020QX snap into place or require hardware to mount?
This is a bolt-on circuit breaker. It requires mechanical fastening to the panelboard bus, ensuring a secure connection for commercial applications.
Does the BQ2B020QX feature a common trip mechanism?
Yes, as a 2-pole breaker, it utilizes an internal common trip mechanism to ensure both poles open simultaneously during a fault condition, preventing single-phasing on connected 240V loads.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 74 reviews.
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Rated 4.9 out of 5 stars
Based on 74 reviews
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Reviews Summary
Generated by AI from 67 most recent customer reviews
Last updated 6/3/26
Customers say these breakers arrive quickly and fit perfectly for their electrical needs. Fast shipping and competitive pricing are frequently mentioned, with many users appreciating the availability of hard-to-find and older-style breakers. The products are well-packaged and arrive in good condition. Most customers report successful installations and reliable performance. A few note missing items from orders or concerns about product condition, though the majority express satisfaction with their purchases and indicate they would order again.