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Square D HGA36150 Molded Case Circuit Breaker

  • 150A
  • 3 Pole
  • I-Line
Square D HGA36150
Molded Case Circuit Breaker
Brand Square D
SKU HGA36150
Select Item Condition
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  • 150A
  • 3 Pole
  • I-Line

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Square D HGA36150 - 150A 3 Pole Molded Case Circuit Breaker

Square D HGA36150 - 150A 3 Pole Molded Case Circuit Breaker

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$1,042.42 In Stock

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Description

Engineered for heavy-duty use, the Square D HGA36150 is a 150A, 3-pole MCCB. Part of the PowerPacT H-Frame series, it delivers dependable thermal-magnetic protection with fixed long-time and instantaneous (LI) functions. Featuring an I-Line plug-on connection, it mounts easily into Square D I-Line panelboards and switchboards. It also replaces older KA36150 and KH36150 models. With a 35kAIC rating at 480VAC, this HACR-rated unit provides excellent current-limiting performance.

Specifications

Key specifications
Brand Square D
Part Number HGA36150
Series HGA
Amperage 150A
Poles 3
Mounting Style I-Line
Voltage 208Y/120VAC, 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC, 500VDC
Phase 3
AIC Rating 65kA @ 208Y/120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC, 35kA @ 480VAC, 18kA @ 600Y/347VAC, 18kA @ 600VAC, 20kA @ 250VDC, 20kA @ 500VDC
Fit and installation
Frame Type HGA
Terminal Type Lugs
For Use With Square D I-Line Panelboards, Switchboards
Wire Gauge 14-3/0 AWG (Al/Cu)
Max Wire 3/0 AWG
Min Wire 14 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, Alarm Switch, Undervoltage Release, Padlock Attachment, Motor Operator
Accessories Load Side Lugs Included
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489
Approval CE, CSA, HACR, IEC, NOM, UL
Temp Rating -25C to 70C
Construction Features HACR Rated, Current Limiting, Reverse Feed, Visual Trip Indicator

Product FAQs

7 answers
Which older circuit breaker models does the HGA36150 replace?

The HGA36150 serves as a direct replacement for older 150A Square D KA36150 and KH36150 breakers. The modern PowerPacT H-frame footprint mounts into the same I-Line panelboard space.

Can I field-install a shunt trip or undervoltage release in the HGA36150?

Yes. PowerPacT H-frame breakers support field-installable accessories, including shunt trips, undervoltage releases, and auxiliary switches. These components mount securely behind the front accessory cover.

Will the HGA36150 install into a standard QO or NQ panelboard?

No. The HGA36150 features an I-Line plug-on connection designed exclusively for Square D I-Line panelboards and switchboards. It will not fit into QO, NQ, or NF series load centers.

What does the letter G in the HGA36150 part number represent?

The letter G designates the interrupting capacity tier within the PowerPacT H-frame family. For this specific model, the G-rating signifies an interrupting capacity of 35kA at 480VAC and 65kA at 240VAC.

How does the I-Line connection on the HGA36150 attach to the panel?

The line side of the breaker uses plug-on jaws that clamp directly onto the panelboard bus assembly. The load side utilizes mechanical lugs for outgoing wire connections, allowing the breaker to seat securely on the bus without requiring line-side cabling.

Is the HGA36150 approved for HVAC equipment?

Yes. As a UL 489 listed circuit breaker, the HGA36150 inherently carries a HACR rating. This makes it fully compliant for protecting heating, air conditioning, and refrigeration equipment group motor circuits.

How can I manually test the mechanical trip function on the HGA36150?

You can manually verify the mechanical operation of the trip unit by pressing the dedicated push-to-trip button located on the front face of the breaker. This will snap the operating handle into the center tripped position.

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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
  • RE
    Ric E.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    5/18/26
    Great item

    Breaker was in great shape, and packaged with care

  • JM
    Justin M.
    Flag of United States
    I recommend this product
    Rated 5 out of 5 stars
    5/8/22
    Great service!

    Prompt shipping.

  • MW
    Mark W.
    Flag of United States
    I recommend this product
    Rated 5 out of 5 stars
    5/7/19
    Breaker

    Breaker was packaged nicely and look like new, at a great price.