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Square D JGA36175 Molded Case Circuit Breaker

  • 175A
  • 3 Pole
  • I-Line
Square D JGA36175
Molded Case Circuit Breaker
Brand Square D
SKU JGA36175
Select Item Condition
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  • 175A
  • 3 Pole
  • I-Line

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JGA36175

Square D JGA36175 - 175A 3 Pole Molded Case Circuit Breaker

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$1,474.38 In Stock

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Description

Designed for heavy-duty power distribution, the Square D JGA36175 is a 175A, 3-pole molded case circuit breaker from the PowerPacT J-Frame series. It delivers robust thermal-magnetic protection for commercial and industrial facilities. This component mounts into Square D I-Line panelboards and switchboards. It is an exact substitute for the discontinued KA36175, ensuring a seamless upgrade path. Rated 35kAIC at 480VAC, it features a Visi-Trip indicator and current-limiting capabilities.

Specifications

Key specifications
Brand Square D
Part Number JGA36175
Series JGA
Amperage 175A
Poles 3
Mounting Style I-Line
Voltage 240VAC, 480VAC, 600VAC, 250VDC, 500VDC
Phase 3
AIC Rating 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC, 20kA @ 250VDC, 20kA @ 500VDC
Fit and installation
Frame Type JGA
Terminal Type Lugs
For Use With Square D I-Line Panelboards, I-Line Switchboards
Wire Gauge 4 AWG - 4/0 AWG (Al/Cu)
Max Wire 4/0 AWG
Min Wire 4 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Adjustable Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Lug Kits
Accessories Lugs
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489
Approval CCC, CE, CSA, IEC, NOM, UKCA, UL
Temp Rating -25C to 70C
Construction Features HACR Rated, Visual Trip Indicator, Mercury Free, PVC Free, 80% Rated

Product FAQs

7 answers
Can I use the JGA36175 to replace a legacy KA36175 circuit breaker?

Yes. The PowerPact J-Frame JGA36175 is the direct, modernized replacement for the obsolete KA-Frame KA36175 breaker. It mounts into the exact same I-Line panelboards and offers equivalent or superior interrupting capabilities.

How do I decipher the JGA36175 catalog number?

The "J" designates the PowerPact J-Frame. "G" represents the interrupting rating tier. "A" indicates an I-Line style plug-in connection. The "3" means three-pole, the "6" indicates a 600V maximum voltage rating, and "175" specifies the 175-amp trip rating.

Is the JGA36175 trip unit field-interchangeable?

No. This specific breaker features a factory-sealed thermal-magnetic trip unit. If you require a different amperage or trip characteristic, the entire breaker must be replaced, or you must select a unit-mount frame specifically configured for field-interchangeable units.

Do I need a mounting adapter to install this breaker in an older I-Line panel?

No. The JGA36175 is a standard I-Line plug-in breaker. Its integral mounting bracket and plug-on jaws are designed to snap directly onto the bus of both legacy and modern Square D I-Line panelboards and switchboards without adapters.

Does the JGA36175 require an external load lug kit?

No. The breaker comes factory-equipped with line-side plug-on jaws for the I-Line bus and standard mechanical load lugs (part number AL175JD) built-in. These standard lugs accept both aluminum and copper wire within the specified gauge range.

Is the JGA36175 rated for 100 percent continuous loads?

No. Like all standard PowerPact J-Frame I-Line breakers, the JGA36175 is rated for 80 percent continuous loads. Square D does not offer 100 percent rated options in the I-Line plug-in configuration.

What is the purpose of the push-to-trip button on the breaker face?

The push-to-trip button allows you to manually exercise the breaker's mechanical tripping system. Regularly testing this function ensures the internal mechanism operates freely, which is a recommended maintenance practice for electrical safety.

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