Engineered for commercial distribution, the Siemens QJ23B150H provides robust thermal-magnetic protection. This 3-pole, 150A molded case circuit breaker delivers reliable long-time and instantaneous trip functions. It features a bolt-on mounting style designed to integrate into Siemens panelboards and switchboards. For facility managers upgrading older systems, this QJ frame unit is replaced by the newer QR23B150H model. Rated for 42kAIC at 240VAC, it offers high interrupting capacity.
HACR Rated, Reverse Feed, Non-Interchangeable Trip, Trip-Free Mechanism, Common Trip, High Interrupting Capacity
Product FAQs
6 answers
What panels and equipment are compatible with the QJ23B150H?
This bolt-on breaker is designed for installation in Siemens panelboards, switchboards, and motor control centers that accept QJ or QR frame breakers.
What does the H in the QJ23B150H catalog number signify?
The H indicates a high interrupting capacity. This model is rated for 42kA at 240VAC, which is significantly higher than the standard 10kA rating of the base QJ23B150 model.
Is the QJ23B150H still in active production?
The QJ frame is a legacy series that has been replaced by the newer QR frame. The direct modern replacement for this breaker is the QR23B150H.
Is the Siemens QJ23B150H suitable for HVAC applications?
Yes, this breaker is HACR rated, making it approved for use with heating, air conditioning, and refrigeration equipment.
What wire materials and sizes are accepted by the factory lugs?
The included lugs accept both copper and aluminum conductors. The supported wire range is 6 AWG to 300 kcmil for copper, and 4 AWG to 300 kcmil for aluminum.
Are the trip settings on the QJ23B150H adjustable?
No, this breaker features a fixed thermal-magnetic trip unit providing Long-Time and Instantaneous (LI) protection. The trip settings are non-interchangeable and cannot be adjusted in the field.
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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.