Part of the Sentron series, this Siemens 110A MCCB is engineered for commercial and industrial applications. It delivers reliable thermal-magnetic protection with fixed LI trip functions. The bolt-on breaker installs into Siemens P1, P2, and P3 panelboards, switchboards, and motor control centers. Featuring a high interrupting capacity of 42kA at 240VAC, this QJ frame unit is HACR and reverse feed rated for versatile installation.
HACR Rated, Reverse Feed, Non-Interchangeable Trip, High Interrupting Capacity
Product FAQs
6 answers
Can I install the QJ23B110H in a standard residential load center?
No, this is a bolt-on molded case circuit breaker designed for commercial and industrial distribution. It is compatible with Siemens P1, P2, and P3 panelboards, switchboards, and motor control centers, but will not fit in standard plug-on residential load centers.
What does the "H" in the QJ23B110H catalog number indicate?
The "H" designates this as a high-interrupting circuit breaker. It features a 42kAIC rating at 240VAC, providing higher fault current protection than the standard 10kAIC rating of the base QJ23B110 model.
Can I use the QJ23B110H to replace an older ITE circuit breaker?
Yes, Siemens acquired ITE and continued manufacturing the QJ frame. The Siemens QJ23B110H is a direct, drop-in replacement for the legacy ITE QJ23B110H.
Is the Siemens QJ23B110H suitable for reverse feeding?
Yes, this QJ frame circuit breaker is reverse-feed capable, allowing it to be back-fed in applications where the power source is connected to the load terminals.
Has the Siemens QJ frame been replaced by a newer series?
Yes, the QJ frame is a legacy design that has been officially superseded by the newer Siemens QR frame series. However, QJ breakers like the QJ23B110H are still manufactured and widely used as direct replacements in existing QJ-provisioned equipment.
Is the QJ23B110H rated for use with HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
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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.