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Square D QDL22150 Molded Case Circuit Breaker

  • 150A
  • 2 Pole
  • Unit Mount
Square D QDL22150
Molded Case Circuit Breaker
Brand Square D
SKU QDL22150
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  • 150A
  • 2 Pole
  • Unit Mount

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Square D QDL22150 - 150A 2 Pole Molded Case Circuit Breaker

Square D QDL22150 - 150A 2 Pole Molded Case Circuit Breaker

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$449.44 In Stock

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Description

Engineered for robust commercial and industrial applications, this 150-amp Q-Frame molded case circuit breaker delivers reliable long-time and instantaneous trip functions. The thermal-magnetic mechanism handles demanding electrical loads. Designed as a unit-mount solution, it integrates into Square D enclosures and panelboards. This model serves as an exact replacement for legacy Q22150 breakers. With a 25kA interrupting capacity at 240V, it ensures robust fault clearing.

Specifications

Key specifications
Brand Square D
Part Number QDL22150
Series QDL
Amperage 150A
Poles 2
Mounting Style Unit Mount
Voltage 208Y/120VAC, 240VAC
Phase 1
AIC Rating 25kA @ 208Y/120VAC, 25kA @ 240VAC
Fit and installation
Frame Type QDL
Terminal Type Lugs
For Use With Square D Individual Enclosures, Panelboards, Switchboards
Wire Gauge 4 AWG - 300 kcmil (Al/Cu)
Max Wire 300 kcmil
Min Wire 4 AWG
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, Undervoltage Release, Alarm Switch, Padlock Attachment
Accessories Line and Load Lugs Included
Standards CSA C22.2 No 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489
Approval CSA, IEC, NOM, UL
Temp Rating -25C to 70C
Construction Features Mercury Free, PVC Free, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, Common Trip, 80% Rated, RoHS Compliant, Push-To-Trip

Product FAQs

6 answers
What is the difference between the Square D QDL, QBL, QGL, and QJL circuit breakers?

The primary difference is their interrupting rating at 240VAC. The QBL is rated at 10kAIC, the QDL at 25kAIC, the QGL at 65kAIC, and the QJL at 100kAIC. They share the same physical Q-frame dimensions and unit-mount configuration.

What types of panels or enclosures are compatible with the QDL22150?

The QDL22150 is a unit-mount Q-frame breaker designed for use in Square D individual enclosures, such as the Q2150MRBE, as well as compatible Square D switchboards and panelboards. It is not designed for I-Line panelboards, which require a different mounting construction.

Does the QDL22150 come with factory-installed lugs?

Yes, this unit-mount breaker includes factory-installed line and load lugs. The lugs are designed to accept both aluminum and copper conductors.

Can the QDL22150 be reverse-fed for backfeed applications?

Yes, standard thermal-magnetic Q-frame breakers like the QDL22150 can be reverse-fed. When used as a back-fed main breaker, ensure it is properly labeled and installed with an approved retaining barrier or hold-down kit as required by the National Electrical Code.

Can I use the QDL22150 to replace an older Q22150 breaker?

Yes, the PowerPacT Q-frame QDL22150 is the direct, modern replacement for the legacy Square D Q22150 unit-mount circuit breaker.

Is the QDL22150 rated for 100 percent continuous operation?

No, standard Q-frame breakers like the QDL22150 are rated for 80 percent continuous load. Continuous loads should not exceed 120 amps for this 150-amp breaker.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 3 reviews
Total 5 star reviews: 3 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
3 reviews
  • PM
    Patrick M.
    Verified Buyer
    Reviewing
    Square D QDL32150 - 150A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/28/26
    Replacement breaker for a main panel

    The breaker worked exactly as it was supposed to. We installed it and are having no issues with it. These guys are top notch.

  • RF
    Ron F.
    Verified Buyer
    Reviewing
    Square D QDL32175 - 175A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/27/26
    Enclosed Breaker

    As usual Super Breakers delivered on Price and a prompt delivery time, The right part for the right price everytime.

  • KN
    Karl N.
    Flag of United States
    Reviewing
    Square D QDL32150 - 150A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    5/17/19
    Breaker, breaker, 10four

    Helpful Rep. Goods delivered No delays Don't lose this number