Built for heavy-duty applications, the Square D HLA36060 delivers 60A of thermal-magnetic protection within the PowerPact H-Frame architecture. It features long-time and instantaneous (LI) trip functions with an adjustable magnetic trip setting for precise coordination. Designed for Square D I-Line panelboards and switchboards, the breaker utilizes a plug-on line connection for fast installation. This 600VAC-rated MCCB offers a 100 kAIC interrupting capacity at 480V and is HACR rated.
What panelboards are compatible with the HLA36060?
This breaker is built specifically for Square D I-Line panelboards and switchboards. It features an I-Line plug-on connection for the line side and mechanical lugs on the load side.
Can the HLA36060 replace older Square D F-Frame breakers?
Yes. The PowerPacT H-Frame occupies the same I-Line mounting space as discontinued F-Frame breakers. It serves as a direct plug-on replacement for obsolete 60A models like the FA36060, FH36060, and FC36060 without requiring bus modifications.
What do the letters in the HLA36060 catalog number signify?
"H" designates the PowerPacT H-Frame. "L" indicates the high interrupting rating of 125kA at 240VAC, 100kA at 480VAC, and 50kA at 600VAC. "A" specifies an I-Line plug-in connection with an ABC phase sequence.
What does the LI trip function code mean on this breaker?
The LI code indicates that the thermal magnetic trip unit provides Long-Time (L) protection for overloads and Instantaneous (I) protection for short circuits.
What are the load side wiring specifications for this breaker?
The load side mechanical lugs accept 14 to 3/0 AWG aluminum or copper conductors. The line side does not require wiring, as it plugs directly onto the I-Line bus.
What safety procedures should be followed before installing this I-Line breaker?
Always de-energize the panelboard or switchboard before installation. Verify that all power is disconnected using a properly rated voltage sensing device, and ensure you are wearing appropriate personal protective equipment (PPE) as required by NFPA 70E.
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