Built for heavy-duty distribution, the Siemens QJ22B150 is a 2-pole, 150A molded case circuit breaker. It operates at 240VAC and utilizes a trip-free mechanism with fixed thermal and magnetic elements to ensure consistent performance in demanding environments. The breaker mounts into Siemens P1, P2, and P3 panelboards, along with compatible switchboards and meter centers. For legacy system maintenance, it is a direct fit, while the QR22B150 serves as the modern replacement.
Which panelboards are compatible with the Siemens QJ22B150 circuit breaker?
The QJ22B150 is a bolt-on unit mount breaker designed for use in Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards and modular meter centers.
Is the Siemens QJ22B150 suitable for HVAC equipment?
Yes, this breaker is HACR rated, making it suitable for use with compatible heating, air conditioning, and refrigeration equipment where permitted by local electrical codes.
Can the QJ22B150 be reverse fed?
Yes, this QJ frame breaker is reverse feed capable, allowing it to be used in applications where power is fed from the load side.
Are there versions of the QJ22B150 with a higher interrupting rating?
Yes, if your application requires a higher short-circuit rating than the standard 10kAIC, you can use the QJH22B150 which is rated at 22kAIC, or the QJ22B150H which is rated at 42kAIC at 240VAC.
What is the ambient operating temperature rating for the QJ22B150?
This thermal-magnetic circuit breaker is calibrated for a maximum ambient operating temperature of 40 degrees Celsius (104 degrees Fahrenheit).
What is the modern replacement for the QJ22B150?
The QJ frame is a legacy series. For modern replacements, it crosses over to the Siemens QR frame, such as the QR22B150L. Note that installing a QR breaker in an older QJ space may require a specific mounting kit.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 10 reviews.
Siemens QJ23B125 - 125A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/11/26
Breaker
Perfect
TN
Timothy N.
Verified Buyer
Reviewing
Siemens QJ23B200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/27/26
10% off
Arrived on time, worked when turned on
WK
Willie K.
Verified Buyer
Reviewing
Siemens QJ23B150 - 150A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 4 out of 5 stars
7/22/26
Breaker
The Breaker arrive fast and in good condition however when I looked at the specs it was not the correct one.
PG
Phil G.
Verified Buyer
Reviewing
Siemens QJ23B200 - 200A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/3/26
Great Service
I was in a bind for this breaker that was for an elevator, and Nick got me all the components even though their blizzard! Will use them for all my specialty breakers.
VC
Vladimir C.
Verified Buyer
Reviewing
Siemens QJ22B200 - 200A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 4 out of 5 stars
12/10/25
4 start
The breaker was it perfect match.,but it was missing the two top bolts.