The QDA221004 is an industrial molded case circuit breaker from Square D's PowerPacT Q-Frame family. Rated for 100A at 240VAC, it provides essential long-time and instantaneous (LI) trip functions. This unit installs into Square D I-Line panelboards and switchboards. It features a plug-on I-Line mounting style with a BC phase connection and replaces the legacy Q221004. With a 25kAIC interrupt rating, this HACR-rated breaker ensures robust fault clearing.
What type of panelboards are compatible with the QDA221004?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection on the line side.
Is the QDA221004 part of the PowerPacT series?
Yes, it is a PowerPacT Q-frame molded case circuit breaker. It also serves as a direct replacement for older Square D Q2 series breakers with the same specifications.
What does the D in the QDA221004 catalog number indicate?
In the PowerPacT Q-frame nomenclature, the D indicates an interrupting rating of 25kA at 240VAC. Other common Q-frame ratings include B (10kA), G (65kA), and J (100kA).
What does the A in the QDA prefix signify?
The A indicates the connection type. It specifies an I-Line shroud on the ON end for plug-in mounting, with mechanical lugs on the load end.
How much mounting space does this 2-pole Q-frame breaker require in an I-Line panel?
The QDA221004 requires 3 inches of mounting space, as each pole in the Q-frame series is 1.5 inches wide.
What wire sizes are accepted by the load side lugs on the QDA221004?
The mechanical lugs on this breaker accept aluminum or copper wire ranging from 4 AWG to 300 kcmil.
Are the trip settings on the QDA221004 adjustable?
No, this thermal magnetic breaker features fixed long-time and fixed instantaneous trip functions. The magnetic hold is set at 1200A and the magnetic trip is set at 2400A.
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Customers rate this product 5.0 out of 5 based on 6 reviews.