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Siemens QJH22B175 Molded Case Circuit Breaker

  • 175A
  • 2 Pole
  • Bolt-On
Siemens QJH22B175
Molded Case Circuit Breaker
Brand Siemens
SKU QJH22B175
Select Item Condition
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  • 175A
  • 2 Pole
  • Bolt-On

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Siemens QJH22B175 2 Pole Circuit Breaker

Siemens QJH22B175 - 175A 2 Pole Molded Case Circuit Breaker

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$827.62 In Stock

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Description

Built for demanding industrial applications, the Siemens QJH22B175 is a 2-pole, 175A molded case circuit breaker. As part of the Sentron QJ frame lineup, it utilizes a thermal-magnetic trip mechanism to deliver precise protection. The breaker mounts into Siemens P1, P2, and P3 panelboards, as well as compatible meter centers. It maintains existing infrastructure and is replaced by the QRH22B175 model.

Specifications

Key specifications
Brand Siemens
Part Number QJH22B175
Series QJH
Amperage 175A
Poles 2
Mounting Style Bolt-On
Voltage 240VAC
Phase 1
AIC Rating 22kA @ 240VAC
Fit and installation
Frame Type QJ
Terminal Type Lugs
For Use With Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers, Meter 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 (TA1Q300)
Standards CSA C22.2 No. 5, HACR Rated, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip, Reverse Feed

Product FAQs

7 answers
Can I install the QJH22B175 in a Siemens P1 panelboard?

Yes, but it requires a specific main or subfeed mounting kit. For original P1 panelboards, you will typically need a kit like the MBKQJ1200 to properly attach the 2-pole bolt-on connections to the panel bus.

What is the difference between the Siemens QJ22B175 and the QJH22B175?

The primary difference is the interrupting rating. The QJ22B175 is rated at 10kAIC at 240V, while the QJH22B175 features a higher interrupting capacity of 22kAIC at 240V.

Is the QJH22B175 a direct replacement for older I-T-E QJ frame breakers?

Yes. Siemens acquired I-T-E and continued manufacturing the QJ frame. The QJH22B175 can directly replace older I-T-E branded breakers with the exact same catalog number.

Has the Siemens QJH22B175 been superseded by a newer frame type?

Yes, Siemens has transitioned from the legacy QJ frame to the newer QR frame. The modern equivalent is the QRH22B175, though mounting hardware requirements may differ depending on your specific panelboard generation.

Is the QJH22B175 suitable for reverse feed applications?

Yes. This breaker features a non-interchangeable trip unit and is suitable for reverse feed applications, allowing it to be back-fed as a main breaker in compatible enclosures.

Is the QJH22B175 HACR rated for HVAC applications?

Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment that requires this specific designation.

Does the QJH22B175 provide ground fault or arc fault protection?

No. This is a standard thermal-magnetic circuit breaker designed strictly for overload and short-circuit protection. It does not include GFCI or AFCI circuitry.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 4 reviews
Total 5 star reviews: 4 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
4 reviews
  • JK
    Jeannine K.
    Verified Buyer
    Reviewing
    Siemens QJH23B060 - 60A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/14/26
    Siemens Breaker

    Breaker was a new surplus as described. Fast shipping & handling

  • BL
    Bob L.
    Verified Buyer
    Reviewing
    Siemens QJH23B100 - 100A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/15/26
    Exactly what I needed / Great service

    Excellent experience purchasing the Siemens QJH23B100. The breaker was well-packaged, priced competitively, and arrived right on schedule. It's already installed and operating perfectly. Five stars for both the product and SuperBreakers.

  • WE
    Warren E.
    Flag of United States
    Reviewing
    Siemens QJH23B225 - 225A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    2/17/20
    Great stock along with Great

    Great stock along with Great customer service.

  • ED
    Eddie D.
    Flag of United States
    Reviewing
    Siemens QJH23B060 - 60A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    11/27/17
    Fast delivery

    Great service fast delivery and received exact item for a great price.