Square D PowerPacT Q I-Line Th...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,556.67
Square D PowerPacT Q I-Line Thermal Magnetic Circuit Breaker, 240VAC

Square D PowerPacT Q I-Line Thermal Magnetic Circuit Breaker, 240VAC

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Model: QGA32150

In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,556.67
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Square D PowerPacT Q I-Line Thermal Magnetic Circuit Breaker, 240VAC

The Square D PowerPacT Q I-Line circuit breaker delivers dependable overcurrent protection and switching for 240V AC, 50/60 Hz systems. Built on the PowerPacT Q-Frame platform, this thermal magnetic breaker is available in 2 and 3-pole configurations with I-Line bracket mounting for panelboard installation, and carries UL, CSA, and NOM certifications for commercial and industrial applications.

Key Features

  • Pole Configuration: PowerPacT Q circuit breakers are available in 2 and 3-pole designs for flexible circuit protection.
  • Thermal Magnetic Trip: Combines thermal and magnetic trip elements for reliable, code-compliant overcurrent protection.
  • Operational Voltage: Rated 240 V AC, 50/60 Hz (UL) for standard commercial and industrial power distribution systems.
  • I-Line Mounting & Connection: Uses an I-Line bracket with I-Line line-side connection and lug-based load-side connection for panelboard installation.
  • Continuous Current Rating: 80% continuous current rating supports standard duty-cycle circuit applications.
  • Impulse Withstand Voltage: Rated 8 kV (UL) for robust impulse voltage protection.
  • Mechanical Durability: Tested to 5000 no-load cycles and 1000 loaded cycles for long service life.
  • Local Signalling: Includes 1 green trip indicator for quick visual status checks.

Certifications & Compliance

  • UL Listed
  • CSA Certified
  • NOM-003-SCFI-2000 Certified
  • NEMA Standards

Technical Specifications

  • Warranty: 18 months
  • Warranty Period: 18 months
  • Sustainable Packaging: No
  • Mercury Free: Yes
  • Packaging Without Single Use Plastic: No
  • Tier Id: 1
  • ROHS Eur In Scope: Yes
  • Recycled Metal Content At Cr Level: 0 %
  • Poles Description: 3P
  • Serviceability: No
  • With Recycled Cardboard: Yes
  • WEEE Product Category: 4
  • China ROHS In Scope: No
  • Return Indicator: Y
  • Take Back: No
  • Tier: 1
  • Returnability: Yes
  • Field Service Division: PPIBS
  • Magnetic Tripping Current: 2400-2400 A
  • Trip Unit Technology: thermal-magnetic
  • Wire Stripping Length: 22 mm

Typical Applications

  • Commercial and Industrial Electrical Installations
  • Panelboard and Switchboard Systems
  • I-Line Panelboard Retrofits
  • OEM and Control Panel Building
  • Overcurrent Protection and Circuit Switching

Why Square D?

Square D PowerPacT Q circuit breakers combine UL, CSA, and NOM-recognized construction with mercury-free, halogen-free materials and an average life duration of 15 years. With thermal magnetic trip protection, I-Line mounting, and mechanical durability tested to 5000 no-load cycles, this breaker is built for reliable, code-compliant performance in demanding commercial and industrial electrical systems.

Manufacturer Resources

Product Specs

Product Type:
Circuit Breaker
Voltage Rating:
240VAC
Configuration:
3-Pole
Standards:
UL-CSA-NOM
Listing:
UL Listed
Amperage Rating:
150A
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Circuit Breakers
Product Height:
6.47 in
Product Depth:
3.93 in
Product Width:
4.5 in

Square D QGA32150 – Frequently Asked Questions

1) Will a Square D QGA32150 breaker mount in an I-Line panelboard?
Yes. The QGA32150 is built on the PowerPacT Q-Frame platform with an I-Line bracket and I-Line line-side connection, so it plugs into an I-Line panelboard interior. The load side terminates in lugs. It is not a bolt-on or plug-on residential breaker, so it will not fit a standard load center; it needs an I-Line panelboard or switchboard interior.
2) What amperage and voltage is the Square D PowerPacT QGA32150 rated for?
150A, 3-pole, at 240V AC, 50/60 Hz. It also carries an 8 kV impulse withstand rating (UL) and an 80 percent continuous current rating, which means for a continuous load the circuit should be sized so the load does not exceed 120A on this 150A frame.
3) Can I use this 240V breaker on a 480V system?
No. The PowerPacT Q I-Line QGA32150 is rated 240V AC only. For a 480V I-Line application you need a breaker rated for that system voltage; applying a 240V device at 480V is a misapplication regardless of the frame size.
4) What other 3-pole molded case breakers could I use instead of the Square D QGA32150?
A close cross-brand match on frame and current is the ABB A2A150TT, an A2 Series 3-pole molded case breaker at the same 150A size. ABB also offers XT4 and XT5 Series 3-pole breaker kits for larger frames. Note that none of these mount on an I-Line bus, so if you are feeding an existing Square D I-Line panelboard interior the Q-Frame I-Line breaker is the part that physically fits.
5) Is there a cross-brand equivalent to the Square D QGA32150 150A 3-pole molded case breaker?
The closest cross-brand peer is the ABB A2A150TT, an A2 Series 3-pole molded case circuit breaker. The Square D QGA32150 is a 150A 3-pole PowerPacT Q breaker rated 240VAC with thermal magnetic trip. The key difference is the connection method: the PowerPacT Q uses an I-Line bracket with I-Line line-side connection for Square D I-Line panelboards, while the ABB A2 mounts as a conventional molded case breaker, so it is not a drop-in for an I-Line stab. Treat the ABB as a functional alternative in new or standalone enclosures, not as an I-Line retrofit.
6) Can I use an Eaton BAB 3-pole 240V breaker instead of the Square D PowerPacT QGA32150?
They serve different parts of the system. The Eaton BAB-302 is a three-pole Quicklag industrial thermal-magnetic breaker rated 240V, and the BAB1010 is a bolt-on Quicklag thermal-magnetic breaker - both are branch-style breakers that bolt into a loadcenter or panelboard interior. The Square D QGA32150 is a 150A 3-pole PowerPacT Q molded case breaker that mounts on an I-Line bracket and connects to the I-Line bus on the line side with lugs on the load side. For a 150A I-Line main or feeder position, the Quicklag breakers are not an interchange; they suit smaller branch circuits on their own Eaton mounting.
7) What looks like a substitute for the QGA32150 but will not work?
Automotive and DIN-rail supplementary breakers get mistaken for it because the names read similarly. The Bussmann CBC Series is a Type I automotive breaker rated 14VDC, and the CBF and CBS Series are also automotive breakers, so none of them belong on a 240VAC commercial distribution circuit. The ABB ST200M is a miniature circuit breaker with a C-curve listed to UL1077, which is a supplementary protector rather than a branch circuit device. The Square D QGA32150 is a UL Listed 150A 3-pole breaker rated 240VAC for panelboard and switchboard systems.
8) How much space does the QGA32150 take up in the panel?
The breaker measures 6.47 in height, 4.5 in width, and 3.93 in depth. Check the depth against your enclosure gutter space before committing, since the load-side lugs add cable bend radius on top of that.
9) Is the Square D PowerPacT Q breaker UL Listed and acceptable for a commercial inspection?
It is UL Listed, CSA Certified, and certified to NOM-003-SCFI-2000, and built to NEMA standards. That UL-CSA-NOM combination covers US, Canadian, and Mexican installations, which matters on multi-site or cross-border industrial work.
10) Is this a thermal magnetic or electronic trip unit, and where does it trip magnetically?
Thermal-magnetic. The thermal element handles sustained overloads and the magnetic element handles short circuits, with magnetic tripping current set at 2400 A. There is no adjustable electronic trip unit, so if your spec calls for adjustable long-time or ground-fault settings this is not the right breaker.
11) Is an Eaton BAB Quicklag breaker a substitute for this Square D PowerPacT Q?
Not for the same job. The Eaton BAB Quicklag three-pole thermal-magnetic breaker is also a 240V device, but it is a bolt-on branch breaker, not a molded case I-Line breaker. Use the BAB where you have a Quicklag-compatible panel and branch-level amperages; use the 150A PowerPacT Q I-Line where you are landing a main or large feeder on an I-Line bus.
12) I need more than 150A in a 3-pole frame - what should I look at instead of the QGA32150?
The Square D QGA32150 is fixed at 150A in a 3-pole configuration, so a larger load needs a larger frame. In the cross-brand set, the Eaton Series C K-Frame mining circuit breaker is rated 400A 3-pole and uses an interchangeable rating plug, which lets the trip rating be set within the frame. The ABB XT5 3-pole kit is also a larger-frame option than the XT4 3-pole kit. Note that the PowerPacT Q mounts with an I-Line bracket onto an I-Line bus, so moving to another brand's frame means changing the mounting and connection scheme as well.
13) Does the Square D QGA32150 accept an interchangeable trip unit like some competing breakers?
No. The QGA32150 is a fixed thermal-magnetic breaker: the trip unit technology is thermal-magnetic with a magnetic tripping current of 2400 A, and the amperage rating is 150A. If the application calls for field-adjustable trip settings, the Eaton Series C K-Frame breaker is a 400A 3-pole unit built around an interchangeable rating plug. Choosing that route means designing to Eaton's frame and mounting rather than the I-Line bracket the PowerPacT Q uses.
14) Which breaker has the broader North American certification coverage, the QGA32150 or the ABB A2A150TT?
The Square D QGA32150 carries UL, CSA and NOM certification, specifically NOM-003-SCFI-2000, along with NEMA standards compliance, and it is built in Mexico - useful when a specification or a cross-border project calls out Mexican certification. The ABB A2A150TT is an A2 Series 3-pole molded case breaker. For jobs where the submittal requires UL plus CSA plus NOM on the same device, the PowerPacT Q answers all three directly.
15) How do I tell if this breaker has tripped versus been switched off?
The QGA32150 has a single green trip indicator for local signalling, so a tech can see the status at the panel without pulling the cover or metering the circuit.
16) What wire strip length do the load-side lugs need?
Strip 22 mm of insulation for the lug terminations. The load side is lug-connected while the line side lands on the I-Line bus stabs, so the only field wiring is on the load end.
17) How many operations is the PowerPacT Q breaker good for if it is used as a switching device?
Mechanical endurance is 5000 no-load cycles and 1000 loaded cycles, with an average life duration of 15 years. That supports occasional switching duty, not a motor-starting or daily on-off application where a contactor belongs.
18) Is the Square D PowerPacT Q breaker mercury free and RoHS in scope?
It is mercury-free and halogen-free, EU RoHS in scope, and ships in recycled cardboard. Recycled metal content at CR level is 0 percent and the packaging is not single-use-plastic-free, which matters if you are documenting materials for a LEED or green-procurement submittal.
19) Where is the Square D QGA32150 breaker made?
Mexico. For government or institutional jobs with domestic-sourcing clauses, that origin is worth confirming against your contract language before the submittal goes out.
How fast can I get the Square D QGA32150 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Square D QGA32150 come with a warranty?
Absolutely. The Square D QGA32150 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Square D QGA32150?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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