Built for industrial power distribution, the Square D HDA36035 is a 3-pole, 35A molded case circuit breaker within the PowerPacT H-Frame series. It delivers reliable thermal-magnetic protection with long-time and instantaneous (LI) trip functions. This breaker mounts into Square D I-Line panelboards and switchboards, offering a seamless replacement path for legacy FA36035 units. Featuring an 18 kAIC rating at 480VAC, it includes a Visi-Trip indicator and is HACR rated for HVAC applications.
What types of panelboards are compatible with the HDA36035?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features the I-Line plug-on connection style and will not fit standard QO, NQ, or NF series panels.
How does the I-Line mounting system work for this breaker?
The I-Line design uses a plug-on connection for the phase bus bars. The breaker snaps onto the bus stack and is then secured with a mounting bracket and screw to ensure a rigid, reliable connection.
What does the D in the HDA36035 catalog number indicate?
In the Square D PowerPacT H-frame series, the D designates the interrupting rating tier. For this breaker, it indicates a D-interrupting level, which provides 18kA at 480VAC and 14kA at 600VAC.
Are the lugs on this breaker rated for aluminum wire?
Yes, the standard factory lugs accept both aluminum and copper conductors ranging from 14 AWG to 3/0 AWG.
Is the trip unit on the HDA36035 fully adjustable?
This thermal-magnetic breaker features a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
Why is it important to follow the torque specifications on the breaker label?
Applying the correct torque ensures a secure connection that prevents overheating, arcing, and potential fire hazards. Always use a calibrated torque wrench and follow the exact inch-pound values printed on the breaker faceplate for your specific wire size.
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Review summary
Customers rate this product 5.0 out of 5 based on 11 reviews.