Engineered for heavy-duty applications, the Square D HDL36080 is an 80A, 3-pole MCCB from the PowerPacT H-Frame series. It provides essential long-time and instantaneous (LI) trip functions. Featuring a unit-mount configuration with factory lugs, it integrates into industrial control panels. This model is the designated replacement for legacy FAL36080 breakers. With an 18 kAIC rating at 480V, this current-limiting breaker includes a Visi-Trip indicator to help quickly locate tripped circuits.
HACR Rated, Current Limiting, Visual Trip Indicator, Reverse Feed
Product FAQs
6 answers
What does the D in the HDL36080 catalog number signify?
The D specifies the interrupting rating tier within the PowerPacT H-Frame family. For this breaker, the D rating provides an interrupting capacity of 25kA at 240VAC, 18kA at 480VAC, and 14kA at 600VAC. Square D also offers G, J, and L tier models for applications requiring higher fault current protection.
Will the HDL36080 mount directly into a Square D I-Line panelboard?
No. The L in the HDL36080 catalog number designates a unit-mount circuit breaker configured with mechanical lugs on both the line and load sides for standard backpan or enclosure mounting. If your installation requires an I-Line plug-on connection, you must source the HDA36080 version instead.
Can I field-install a shunt trip or auxiliary switch in this breaker?
Yes. PowerPacT H-Frame circuit breakers support a wide range of field-installable internal accessories, including shunt trips, undervoltage releases, and auxiliary contacts. These modules install into dedicated compartments located behind the front accessory cover.
Are the trip limits on the HDL36080 adjustable?
No. This unit features a standard thermal-magnetic trip unit with fixed thermal overload and fixed instantaneous magnetic protection. If your application demands adjustable trip curves, dialing capabilities, or energy metering, you will need a PowerPacT H-Frame breaker equipped with a MicroLogic electronic trip unit.
Is this the correct replacement for an obsolete FAL36080 circuit breaker?
Yes, the PowerPacT HDL36080 is the manufacturer-designated replacement for the legacy Square D F-Frame FAL36080. Be aware that the modern H-Frame dimensions and mounting hole patterns differ slightly from the older F-Frame, so minor modifications to your mounting plate or enclosure dead-front may be required.
How can I manually test the tripping mechanism on the HDL36080?
This breaker is equipped with a factory-installed push-to-trip button on the front faceplate. Pressing this button allows you to manually open the contacts and exercise the internal trip mechanism during routine maintenance or safety inspections without requiring primary current injection equipment.
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