Engineered for the SACE Tmax XT1 frame, the XT1HU3035AFD000XXX is a 3-pole, 35-amp molded case circuit breaker designed for robust commercial and industrial applications. It utilizes fixed thermal and magnetic trip elements to deliver precise long-time and instantaneous (LI) protection. This unit mount breaker fits into ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and Tmax XT enclosures. It replaces the legacy T1H035TW model. Rated 65 kAIC at 480VAC, it is HACR rated.
HACR Rated, Current Limiting, Reverse Feed, Double Insulated, Trip-Free Mechanism
Product FAQs
5 answers
What panelboards and enclosures are compatible with the XT1HU3035AFD000XXX?
This XT1 breaker is designed for use in ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and Tmax XT enclosures. It is a unit mount breaker, meaning it mounts directly to the enclosure or backpan rather than plugging into a bus.
What wire sizes and materials are accepted by the lugs on this breaker?
The factory-installed lugs accept 10 AWG through 2/0 AWG wire. They are rated for both copper (Cu) and aluminum (Al) conductors. Ensure proper torque specifications are followed during installation as outlined in the ABB Tmax XT1 instruction manual.
What does the LI trip function indicate on this XT1 breaker?
The LI designation means this thermal magnetic trip unit provides Long-Time (L) protection for overloads and Instantaneous (I) protection for short circuits. On this specific 35A XT1 model, both the thermal and magnetic trip thresholds are fixed and cannot be adjusted.
What does the H in the XT1HU3035AFD000XXX catalog number signify?
The H indicates the interrupting capacity tier of the breaker. In the ABB Tmax XT1 series, H designates a High interrupting rating, which provides 65kAIC at 480VAC and 100kAIC at 240VAC.
Can this breaker be used in DC applications?
Yes, the XT1HU3035AFD000XXX is rated for DC applications up to 250VDC, where it provides a 50kA interrupting rating. When wiring for DC, consult ABB's Tmax XT technical documentation for proper pole configuration and series wiring requirements.
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