Providing robust commercial and industrial power distribution, the XT1HU3110AFD000XXX is a 3-pole, 110-amp molded case circuit breaker from ABB's SACE Tmax XT family. It installs into ReliaGear neXT panelboards, ReliaGear SB switchboards, and Tmax XT enclosures, serving as a direct replacement for legacy Tmax T1 series breakers. Rated for 65 kAIC at 480VAC, this unit mount MCCB features a fixed thermal-magnetic (TMF) trip unit providing long-time and instantaneous (LI) protection.
HACR Rated, Current Limiting, Double Insulated, Reverse Feed
Product FAQs
8 answers
Can the ABB XT1HU3110AFD000XXX be used to replace older Tmax T1 circuit breakers?
Yes, the SACE Tmax XT1 series is designed as the direct replacement for legacy ABB Tmax T1 series breakers, offering upgraded interrupting capacities and accessory options within a similar compact footprint.
What does the H in the XT1HU3110AFD000XXX catalog number signify?
The H designates this as a High interrupting capacity breaker. It is rated to safely interrupt up to 65kA at 480VAC and 100kA at 240VAC.
Is this XT1 breaker suitable for direct current (DC) applications?
Yes, this thermal-magnetic breaker is rated for DC power distribution. It provides a 50kA interrupting capacity at 250VDC.
Can this circuit breaker be reverse-fed?
Yes, ABB Tmax XT1 molded case circuit breakers feature reverse feed capabilities, allowing power to be supplied from either the top or bottom terminals up to the maximum voltage rating.
What type of trip unit is included with the XT1HU3110AFD000XXX?
This breaker is equipped with a fixed thermal-magnetic trip unit. Both the long-time thermal and instantaneous magnetic protection settings are fixed and cannot be adjusted in the field.
Which panelboards and enclosures are compatible with this breaker?
The XT1HU3110AFD000XXX is designed for unit mount installation in ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and standard Tmax XT enclosures.
What wire sizes are accepted by the standard lugs on this 110A breaker?
The included standard lugs accept copper or aluminum conductors ranging from 10 AWG to 2/0 AWG.
Can this 3-pole breaker be used in single-phase applications?
Yes, ABB XT1 3-pole circuit breakers are UL listed for use in single-phase applications up to 347VAC.
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