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Square D HGA36125 Molded Case Circuit Breaker

  • 125A
  • 3 Pole
  • I-Line
Square D HGA36125
Molded Case Circuit Breaker
Brand Square D
SKU HGA36125
Select Item Condition
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  • 125A
  • 3 Pole
  • I-Line

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Square D HGA36125 - 125A 3 Pole Molded Case Circuit Breaker

Square D HGA36125 - 125A 3 Pole Molded Case Circuit Breaker

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$942.85 In Stock

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Description

Built for commercial and industrial applications, this 125A PowerPacT breaker provides fixed thermal and magnetic trip protection. The I-Line mounting configuration allows for efficient installation into compatible Square D panelboards and switchboards. Rated for 65kA interrupting capacity at 240VAC, it effectively replaces older KA36125 units while offering modern current-limiting performance. The Visi-Trip indicator provides clear visual confirmation during fault events.

Specifications

Key specifications
Brand Square D
Part Number HGA36125
Series HGA
Amperage 125A
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 AWG - 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, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle
Accessories Load Side Lugs Included
Standards CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489
Approval CE, CSA, IEC, NOM, UL
Temp Rating -25C to 70C
Construction Features HACR Rated, Current Limiting, Visual Trip Indicator, 80% Rated, Reverse Feed, Non-Interchangeable Trip

Product FAQs

7 answers
What panelboards are compatible with the Square D HGA36125?

The HGA36125 is designed exclusively for installation in Square D I-Line panelboards and I-Line switchboards. It will not fit in standard unit-mount or load center enclosures.

How does the HGA36125 connect to the panel?

This breaker utilizes an I-Line style plug-in connection on the line side that mounts directly onto the panel bus. The load side features traditional mechanical lugs for field wiring.

Can the HGA36125 be used for DC applications?

Yes, this thermal-magnetic breaker is rated for direct current applications. It provides a 20kA interrupting capacity at both 250VDC and 500VDC.

What does the "G" in the HGA36125 part number mean?

The "G" designates the interrupting rating tier within the Schneider Electric PowerPacT H-Frame family. It signifies maximum breaking capacities of 65kA at 240VAC, 35kA at 480VAC, and 18kA at 600VAC.

Are the trip settings on the HGA36125 adjustable?

No, this breaker features fixed thermal and fixed magnetic elements. The Long-Time and Instantaneous (LI) trip functions cannot be field-adjusted.

Does the HGA36125 include a manual testing mechanism?

Yes, PowerPacT H-Frame circuit breakers feature an integral push-to-trip button on the front cover, allowing electricians to safely verify the mechanical trip operation.

Is the HGA36125 rated for 100% continuous loads?

No, this breaker is standard 80% rated. Following standard electrical codes, continuous loads running three hours or longer should not exceed 100 amps, which is 80% of its 125A rating.

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