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The HGA36040 is a reliable Square D 3-pole, 40A I-Line circuit breaker, designed for 600V applications. This breaker ensures optimal protection for your electrical system, featuring robust construction and superior performance for various industrial uses. Ideal for both new installations and replacements, it’s a trusted choice for your circuit protection needs.
The HGA36040 uses Square D's I-Line plug-in mounting system, making it compatible with Square D I-Line panelboards and switchboards designed for that bus system. It will not fit QO or Homeline loadcentres. Share your panelboard model number with us and we'll confirm the fit.
The HGA frame I-Line series has been largely superseded by newer Square D MCCB lines. Northern Breaker Group specializes in obsolete and hard-to-find breakers, so we can often source the HGA36040 new, reconditioned, or surplus. Contact us for current availability.
Provided your existing panelboard supports I-Line plug-in breakers and is rated for 600V / 18kA interrupting capacity, the HGA36040 is a strong candidate for a direct replacement. Always verify the panel's bus rating and available space for a 3-pole breaker. Our team is happy to review your panel specs and confirm suitability.
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