The XT1SU3030AFF000XXX is a 3-pole, 30A molded case circuit breaker from ABB's SACE Tmax XT1 family. Built for industrial use, it provides dependable overcurrent protection. This unit-mount breaker installs into ABB Tmax XT panelboards and standard enclosures, serving as a direct replacement for legacy Tmax T1 breakers. Featuring a fixed thermal-magnetic trip unit, it delivers a 35kA interrupt rating at 480VAC. The AFF designation indicates front terminals without lugs.
Does the XT1SU3030AFF000XXX come with lugs installed?
No. The "FF" in the catalog number indicates it comes with standard front terminals on both the line and load sides, but no lugs are factory-installed. Cable lugs must be sourced separately.
What does the "S" in the XT1SU3030AFF000XXX catalog number indicate?
The "S" designates the Standard breaking capacity tier for the XT1 frame, which provides a 35kA interrupting rating at 480VAC.
What does the TMF designation mean for this trip unit?
TMF stands for Thermal Magnetic Fixed. It means the breaker provides fixed thermal overload and fixed instantaneous short-circuit protection without adjustable dials.
What equipment is compatible with this breaker?
This unit-mount breaker is designed for installation in ABB SACE Tmax XT panelboards, switchboards, and standard industrial enclosures.
Can the Tmax XT1 series replace older ABB breakers?
Yes, the SACE Tmax XT1 is the direct modern replacement for legacy ABB Tmax T1 series circuit breakers.
What do the LI trip functions stand for on this breaker?
The LI designation indicates that the trip unit provides Long-Time (L) protection for overloads and Instantaneous (I) protection for short circuits.
What does the "U" in the XT1SU3030AFF000XXX catalog number stand for?
The "U" indicates that the breaker is certified to UL and CSA standards for the North American market, as opposed to IEC-only versions.
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