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Siemens QJ22B175H Molded Case Circuit Breaker

  • 175A
  • 2 Pole
  • Bolt-On
Siemens QJ22B175H
Molded Case Circuit Breaker
Brand Siemens
SKU QJ22B175H
Select Item Condition
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  • 175A
  • 2 Pole
  • Bolt-On

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Siemens QJ22B175H 2 Pole Circuit Breaker

Siemens QJ22B175H - 175A 2 Pole Molded Case Circuit Breaker

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$931.67 In Stock

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Description

Designed for high-capacity environments, the Siemens QJ22B175H functions as a 2-pole, 175A MCCB. It delivers robust protection for demanding systems. Featuring a secure bolt-on design, this QJ frame breaker installs into compatible Siemens panelboards. For future upgrades, this model is replaced by the HQR22B175. The key differentiator is its high interrupting capacity of 42kAIC at 240VAC. It includes fixed thermal-magnetic trip units with LI functions and is HACR rated.

Specifications

Key specifications
Brand Siemens
Part Number QJ22B175H
Series QJ
Amperage 175A
Poles 2
Mounting Style Bolt-On
Voltage 240VAC
Phase 1
AIC Rating 42kA @ 240VAC
Fit and installation
Frame Type QJ
Terminal Type Lugs
For Use With Siemens Panelboards, Switchboards
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, Line and Load Lugs
Accessories Load Side Lugs
Standards CSA C22.2 No. 5, HACR Rated, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Reverse Feed, Non-Interchangeable Trip, Common Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, High Interrupting Capacity

Product FAQs

6 answers
Which Siemens panelboards are compatible with the QJ22B175H circuit breaker?

This QJ frame breaker is designed for installation in Siemens P1, P2, and P3 panelboards, as well as compatible switchboards and meter centers.

What is the difference between the QJ22B175 and the QJ22B175H?

The H suffix indicates a higher interrupting capacity. The standard QJ22B175 is rated for 10kAIC at 240VAC, while the QJ22B175H provides a 42kAIC rating for systems with higher available fault currents.

Is there a newer replacement series for the QJ22B175H?

Yes, Siemens has transitioned from the legacy QJ frame to the newer QR frame. The direct replacement for this specific model is the HQR22B175, which maintains the same form factor and mounting style for straightforward retrofitting.

Can the QJ22B175H be reverse fed?

Yes, this breaker is suitable for reverse feed applications. It features a non-interchangeable trip design and does not have line and load directional restrictions.

Is the QJ22B175H HACR rated?

Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment group motor installations.

Does the QJ22B175H include ground fault or arc fault protection?

No, this is a standard thermal-magnetic circuit breaker equipped with long-time and instantaneous (LI) trip functions. It does not provide GFCI or AFCI protection.

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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.