Engineered for robust power distribution, the PLA34080 is a 3-pole, 800A molded case circuit breaker from Square D's PowerPacT P-Frame family. It is designed for commercial and industrial facilities. This unit installs into Square D I-Line panelboards and switchboards, utilizing a convenient plug-on I-Line connection. Rated for 100 kAIC at 480VAC, it features an ET 1.0I electronic trip unit for accurate LI (Long-Time, Instantaneous) sensing and true RMS protection.
HACR Rated, Current Limiting, True RMS Sensing, 80% Rated
Product FAQs
7 answers
How is the PLA34080 installed in an electrical panel?
This breaker features an I-Line plug-on connection for the line side, which mounts directly onto the panelboard bus assembly. The load side utilizes standard mechanical lugs for wire terminations.
What wire sizes are accepted by the load side lugs on this breaker?
The standard mechanical lugs on the PLA34080 accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
What does the L in the PLA34080 part number signify?
The L designates the interrupting rating tier for this PowerPacT P-frame breaker, distinguishing it from lower rated G, J, or K variants. It confirms the breaker is rated for a 100kA interrupting capacity at 480VAC and 125kA at 240VAC.
What does the LI trip function code mean on this breaker?
The LI designation indicates the electronic trip unit provides adjustable Long-Time protection for overloads and Instantaneous protection for short circuits. It does not include Short-Time or Ground-Fault protection.
What equipment is the PLA34080 compatible with?
This breaker is designed exclusively for installation in Square D I-Line panelboards and I-Line switchboards. It cannot be used in standard unit-mount or drawout applications.
Can the trip unit on the PLA34080 be upgraded in the field?
Yes, Square D PowerPacT P-frame breakers feature interchangeable Micrologic trip units. The factory trip unit can be swapped in the field to add advanced functions like Short-Time protection, Ground-Fault protection, or power metering.
Does this breaker include a push-to-trip feature for testing?
Yes, PowerPacT P-frame circuit breakers include an integral push-to-trip button on the cover. This allows electricians to manually trip the breaker to verify the mechanical operation of the trip mechanism during maintenance.
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