Built for commercial applications, the Square D HDA36050 provides reliable overcurrent protection within the PowerPacT H-Frame family. This 3-pole, 50A breaker utilizes thermal-magnetic trip technology for long-time and instantaneous defense. It mounts into Square D I-Line panelboards and switchboards, featuring an ABC phase connection. It also serves as a replacement for legacy FA36050 breakers. Rated at 18kAIC at 480VAC, this HACR-rated unit includes a Visi-Trip indicator.
Can the HDA36050 be used as a replacement for older FA36050 breakers?
Yes, the PowerPacT H-frame series is the direct modern replacement for legacy F-frame breakers. The HDA36050 will fit perfectly into the same I-Line bus space as an obsolete FA36050.
Which type of panels will accept the HDA36050 breaker?
This model features a specialized I-Line plug-in connection designed exclusively for Square D I-Line panelboards and switchboards. It cannot be installed in standard NQ or NF series lighting panels.
Does the HDA36050 include wire lugs?
Yes, the breaker comes with factory installed mechanical lugs on the load side. These lugs are rated for both copper and aluminum conductors ranging in size from 14 AWG to 3/0 AWG.
Are the trip settings on the HDA36050 adjustable?
The thermal magnetic trip unit features a fixed thermal element for the 50A continuous current rating. However, the magnetic instantaneous trip is adjustable, allowing you to fine-tune short-circuit protection based on your system requirements.
What does the D represent in the HDA36050 part number?
The D indicates the interrupting rating level within the PowerPacT nomenclature. For this frame size, the D rating provides up to 18kA of interrupting capacity at 480VAC and 25kA at 240VAC.
How is the HDA36050 mounted into the panel?
It utilizes an I-Line plug-in mounting system that engages directly with the bus stack in the panelboard. The line side requires no wiring or bolting, while the load side provides mechanical lugs for outgoing conductors.
Can the HDA36050 be locked in the off position for maintenance?
Yes, this PowerPacT H-frame breaker is compatible with standard Square D handle padlock attachments, allowing personnel to safely secure the breaker in the OFF position during lockout and tagout procedures.
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