Square D JJA PowerPacT J 3-Pol...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4,614.04
Square D JJA PowerPacT J 3-Pole Circuit Breaker, 600VAC I-Line Thermal Magnetic

Square D JJA PowerPacT J 3-Pole Circuit Breaker, 600VAC I-Line Thermal Magnetic

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Model: JJA36150

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

$4,614.04
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Square D JJA PowerPacT J 3-Pole Circuit Breaker, 600VAC, I-Line, Thermal Magnetic

The Square D PowerPacT J 3-Pole Circuit Breaker is a thermal magnetic molded-case breaker engineered to protect electrical systems from overloads and short circuits. This page covers the PowerPacT J breaker across its available Motor FLA ratings — 150A, 175A, 200A, and 225A — so you can match the exact rating your application requires. Every option shares the same core platform: 600VAC rated operational voltage (Ue), 25kA interrupt capacity, 750V rated insulation voltage (Ui), and an 8kV rated impulse withstand voltage (Uimp), making this breaker family well suited for commercial and industrial power distribution.

Key Features

  • 3-Pole Configuration: Built for three-phase circuits with a 600VAC rated operational voltage (Ue) and a 750V rated insulation voltage (Ui) per IEC 60947-2.
  • Motor FLA Range: Available in 150A, 175A, 200A, and 225A Motor FLA ratings to fit a range of feeder and branch circuit protection needs.
  • I-Line Connection: Mounts directly to I-Line panelboards via an I-Line bracket, with load-side lugs accepting AWG 3/0...350 kcmil aluminum/copper terminals.
  • Thermal Magnetic Trip: 80%-rated thermal magnetic trip unit delivers dependable overload and short-circuit protection across the family.
  • 25kA Interrupt Rating: Rated interrupt capacity supports demanding commercial and industrial distribution systems.
  • IP40 Front Cover: Front cover carries an IP40 degree of protection.
  • Local Trip Indication: Local signalling shows switched-off (OFF) status via a green trip indicator.
  • Operating Altitude: Rated for use below 6561.68 ft (2000 m) without derating.

Certifications & Compliance

  • UL Listed
  • CSA Certified
  • NOM-003-SCFI-2000
  • IEC 60947-2
  • NEMA
  • CE Marked

Technical Specifications

  • Warranty Period: 18 months
  • Poles Description: 3P
  • Serviceability: No
  • Sustainable Packaging: No
  • With Recycled Cardboard: Yes
  • Packaging Made With Recycled Cardboard: Yes
  • Removable Battery: No
  • Mercury Free: Yes
  • Quality Labels: CE
  • China ROHS In Scope: Yes
  • ROHS Eur In Scope: Yes
  • WEEE Product Category: 4
  • Recycled Metal Content At Cr Level: 0 %

Typical Applications

  • Commercial and Industrial Electrical Distribution
  • I-Line Panelboard and Switchboard Systems
  • Overcurrent and Short-Circuit Protection
  • Three-Phase Feeder and Branch Circuit Protection
  • HACR-Rated Applications

Why Square D?

Square D PowerPacT J-Frame breakers pair thermal magnetic trip protection with UL Listed and CSA Certified construction for dependable, code-compliant performance across the 150A-225A Motor FLA range. With a 25kA interrupt rating, 750V rated insulation voltage, and I-Line mounting compatibility, this breaker family delivers reliable overcurrent and short-circuit protection for demanding commercial and industrial electrical systems.

Manufacturer Resources

Product Specs

Product Type:
Circuit Breaker
Voltage Rating:
600VAC
Configuration:
3-Pole
Connection Type:
I-Line
Standards:
UL-CSA
Department:
Electrical
Product Group:
Circuit Protection
Amperage Rating:
150A-225A Motor FLA
Listing:
UL Listed
Product Subgroup:
Circuit Breakers
Product Width:
4.09 in
Product Height:
7.52 in
Product Depth:
3.39 in

Square D JJA36150 – Frequently Asked Questions

1) Will a Square D JJA PowerPacT J breaker mount in an I-Line panelboard?
Yes. The JJA PowerPacT J is an I-Line connection breaker and mounts directly to I-Line panelboards using an I-Line bracket. It is not a bolt-on or plug-on breaker for a residential-style load center, so if your panel is not I-Line interior, this frame will not seat.
2) What wire size do the lugs on the JJA J-Frame breaker take?
Load-side lugs on the JJA accept AWG 3/0 through 350 kcmil, aluminum or copper. That covers typical 150A to 225A feeder conductors, including parallel-free single runs at 225A. Check your conductor size against that window before you order, since anything smaller than 3/0 needs a reducer.
3) Is 25kA interrupting enough, and what voltage can I apply the JJA breaker at?
The JJA is rated 600VAC operational voltage with a 25kA interrupting rating, so it covers 480Y/277V and 600V three-phase distribution as long as the available fault current at that point in the system is at or below 25kA. Insulation voltage is 750V and impulse withstand is 8kV. If your utility fault study shows more than 25kA at the panel, you need a higher AIC frame or series-rated combination.
4) Which amp rating of the Square D JJA do I order, and what are the part numbers?
Four Motor FLA ratings are offered: 150A (JJA36150), 175A (JJA36175), 200A (JJA36200), and 225A (JJA36225). All four are 3-pole, 600VAC, 25kA thermal magnetic units on the same J frame, so the only decision is the trip rating.
5) Does the JJA breaker need to be derated for continuous loads?
The JJA uses an 80 percent rated thermal magnetic trip unit, so continuous load on the breaker should not exceed 80 percent of its rating. A 225A JJA carries 180A continuous, a 200A carries 160A, and so on. Size the breaker with that in mind rather than loading to the nameplate figure.
6) Is the ABB A2A150TT a drop-in replacement for a Square D JJA36150 in an I-Line panelboard?
No. The Square D JJA PowerPacT J breaker uses an I-Line connection and mounts directly to I-Line panelboards, so the mounting interface is specific to that bus system. The ABB A2A150TT is an A2 Series 3-pole molded case breaker and is not an I-Line mounted device, so it cannot bolt onto an I-Line bus stab. Both are 3-pole molded case breakers, but for an I-Line panelboard the JJA is the breaker built for that connection.
7) Can I use an Eaton BAB three-pole breaker instead of a Square D JJA PowerPacT J?
They are not interchangeable. The Eaton BAB Quicklag three-pole thermal-magnetic breaker is a 240V bolt-on branch device. The Square D JJA PowerPacT J is rated 600VAC with a 150A-225A Motor FLA range and mounts to an I-Line bus. If the circuit is a 480V or 600V three-phase feeder in an I-Line panelboard, the JJA is the correct class of breaker; the BAB suits 240V lighting and appliance panel branch circuits.
8) I need more than 225A on a three-phase feeder - what should I look at instead of the PowerPacT J?
The Square D JJA PowerPacT J family tops out at a 225A Motor FLA rating across its 150A, 175A, 200A, and 225A options. For a larger frame, the Eaton Series C K-Frame 400A 3-pole breaker with interchangeable rating plug covers a higher amperage on a three-pole molded case platform. Note the Eaton K-Frame unit is a mining-duty breaker and does not mount to an I-Line bus, so confirm your enclosure and connection method before specifying it.
9) Is an ABB ST200M miniature circuit breaker an alternative to the Square D JJA PowerPacT J?
No, these serve different jobs. The ABB ST200M is a miniature circuit breaker with a C-curve, recognized to UL1077 as a supplementary protector. The Square D JJA PowerPacT J is a UL Listed molded case breaker rated 600VAC for 150A-225A Motor FLA feeder and branch protection. Where branch circuit overcurrent protection is required by code, the UL Listed molded case breaker is the device to specify, not a UL1077 supplementary protector.
10) Will the JJA J-Frame breaker physically fit the space in my switchboard section?
The breaker measures 7.52 in height, 4.09 in width, and 3.39 in depth. Use those against your I-Line interior space and the depth behind the trim before committing, especially in a retrofit where the existing breaker was a different frame size.
11) Is this Square D breaker approved for use in a Canadian or US commercial facility?
The JJA PowerPacT J is UL Listed and CSA Certified, and also carries NOM-003-SCFI-2000, IEC 60947-2, NEMA, and the CE mark. That combination covers US, Canadian, and Mexican installations, which matters when a spec section calls for UL-CSA dual listing.
12) Can I use this breaker to protect an HVAC compressor or a motor circuit?
Yes. The JJA is rated for HACR applications and is specified by Motor FLA, with ratings of 150A, 175A, 200A, and 225A. That is why the amperage is expressed as motor full load amps rather than a straight frame rating. It is a thermal magnetic unit, so it handles motor inrush through its magnetic element while the thermal element covers sustained overload.
13) Thermal magnetic or electronic trip for a J-Frame feeder?
The JJA is thermal magnetic, which means a fixed thermal overload curve and a magnetic instantaneous element set by the factory. That is the right choice for straightforward feeder and branch protection where you do not need adjustable long-time, short-time, or ground-fault settings. If the project requires selective coordination with downstream devices, an electronic trip unit frame gives you the adjustability this one does not.
14) What other 3-pole molded case breakers could I use instead of the Square D JJA?
The closest alternatives we carry are ABB molded case units: the ABB A2A150TT in the A2 Series, and kit versions in the XT4 and XT5 series. Note that none of those are I-Line, so they will not drop into a Square D I-Line panelboard the way the JJA does. If you are feeding an existing I-Line interior, stay with the JJA. Eaton's Quicklag BAB three-pole units are a different class entirely, bolt-on branch breakers at 240V, not a 600V J-frame substitute.
15) What is the closest ABB molded case breaker to the Square D PowerPacT J 3-pole in the same frame class?
ABB's nearest 3-pole molded case offerings are the A2A150TT in the A2 Series and the XT4 Series 3-pole molded case breaker kit. Both are 3-pole molded case devices like the Square D JJA PowerPacT J, which is a 3-pole thermal magnetic molded case breaker rated 600VAC. The difference that matters on a job is connection: the JJA is an I-Line breaker, while the ABB XT4 ships as a kit for its own mounting arrangement.
16) Do Bussmann CBC or CBF breakers work as substitutes for a Square D PowerPacT J?
They do not. The Bussmann CBC Series is a Type I automotive circuit breaker rated 14VDC, and the CBF and CBS series are likewise automotive breakers. The Square D JJA PowerPacT J is a 3-pole 600VAC molded case breaker for commercial and industrial power distribution on I-Line panelboards. Automotive breakers protect low-voltage DC vehicle circuits and have no application in a three-phase AC distribution panel.
17) How does the ABB XT5 3-pole breaker kit differ from the Square D JJA PowerPacT J?
The ABB MBM334 is an XT5 Series 3-pole circuit breaker kit, and ABB's MBB33 is the XT4 Series equivalent - both are supplied as kits on the ABB Tmax XT platform. The Square D JJA PowerPacT J is a 3-pole breaker with an I-Line connection and load-side lugs accepting AWG 3/0 to 350 kcmil aluminum or copper conductors, with a frame measuring 7.52 in high, 4.09 in wide, and 3.39 in deep. Choose based on which bus and enclosure the breaker has to land in.
18) How do I tell from the front whether the JJA breaker has tripped?
Local signalling on the breaker shows switched-off (OFF) status through a green trip indicator, so an electrician can read breaker state at the panel without metering. The front cover carries an IP40 degree of protection against solid objects.
19) Can I install the JJA breaker at high elevation without derating?
It is rated for use below 6561.68 ft (2000 m) with no derating. Above that elevation, thinner air reduces both cooling and dielectric strength, so a high-altitude installation needs the manufacturer's derating applied.
20) Can the JJA PowerPacT J breaker be field repaired or have its trip unit swapped?
No. The JJA is listed as non-serviceable, and the thermal magnetic trip is fixed at the factory rating. If a unit fails or you need a different trip rating, you replace the whole breaker with the corresponding part number rather than changing a rating plug. By contrast, Eaton's Series C K-Frame mining breaker uses an interchangeable rating plug, which is a different approach to the same problem.
21) Does the Square D JJA PowerPacT J include an undervoltage release like the Eaton NZM accessory?
The JJA PowerPacT J is supplied as a 3-pole thermal magnetic breaker with local trip indication showing switched-off status through a green indicator, and its front cover carries an IP40 degree of protection. The Eaton 10250T item is an undervoltage release accessory for NZM Series molded case breakers, which is a separate add-on device for that Eaton platform rather than a breaker. If your spec calls for shunt or undervoltage tripping, that is an accessory decision made alongside the breaker frame you choose.
How fast can I get the Square D JJA36150 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 JJA36150 come with a warranty?
Absolutely. The Square D JJA36150 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 JJA36150?
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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