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Siemens QJ23B110H Molded Case Circuit Breaker

  • 110A
  • 3 Pole
  • Bolt-On
Siemens QJ23B110H
Molded Case Circuit Breaker
Brand Siemens
SKU QJ23B110H
Select Item Condition
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  • 110A
  • 3 Pole
  • Bolt-On

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QJ23B110H

Siemens QJ23B110H - 110A 3 Pole Molded Case Circuit Breaker

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$1,504.75 In Stock

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Description

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.

Specifications

Key specifications
Brand Siemens
Part Number QJ23B110H
Series QJ
Amperage 110A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC
Phase 3
AIC Rating 42kA @ 240VAC
Fit and installation
Frame Type QJ
Terminal Type Lugs
For Use With Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers
Wire Gauge 6 AWG - 300 kcmil (Cu), 4 AWG - 300 kcmil (Al)
Max Wire 300 kcmil
Min Wire 6 AWG (Cu), 4 AWG (Al)
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment
Accessories Load Side Lugs
Standards CSA C22.2 No. 5, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features 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

4.8
Rated 4.8 out of 5 stars
Based on 10 reviews
Rating
Ratings
10 reviews
  • WM
    William M.
    Verified Buyer
    Reviewing
    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.