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Siemens QJ23B150H Molded Case Circuit Breaker

  • 150A
  • 3 Pole
  • Bolt-On
Siemens QJ23B150H
Molded Case Circuit Breaker
Brand Siemens
SKU QJ23B150H
Select Item Condition
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  • 150A
  • 3 Pole
  • Bolt-On

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QJ23B150H

Siemens QJ23B150H - 150A 3 Pole Molded Case Circuit Breaker

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$1,740.00 In Stock

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Description

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.

Specifications

Key specifications
Brand Siemens
Part Number QJ23B150H-R
Series QJ
Amperage 150A
Poles 3
Mounting Style Bolt-On
Voltage 240VAC
Phase 3
AIC Rating 42kA @ 240VAC
Fit and installation
Terminal Type Lugs
For Use With Siemens 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
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, 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, 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

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.