Engineered for commercial and industrial applications, the XT1SU3040AFF000XXX provides robust overcurrent protection within ABB's SACE Tmax XT family. This 3-pole, 40-amp unit mount MCCB features a fixed thermal-magnetic trip unit (LI) and is rated for 35kAIC at 480VAC. It installs into ReliaGear neXT panelboards, ReliaGear SB switchboards, and standard Tmax enclosures. Serving as a replacement for legacy Tmax T1N040TL breakers, it offers current-limiting performance and reverse feed capability.
Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, DIN Rail Adapter, Terminal Shields
Accessories
None (Standard)
Standards
CSA C22.2 No. 5, HACR, IEC 60947-2, UL 489
Approval
CE, CSA, cULus, IEC, RoHS, UL
Temp Rating
-25C to 70C
Construction Features
HACR Rated, Reverse Feed, Double Insulated
Product FAQs
7 answers
What panelboards are compatible with the XT1SU3040AFF000XXX?
This XT1 frame breaker is designed for installation in ABB ReliaGear neXT panelboards, ReliaGear SB switchboards, and SACE Tmax XT panelboards.
What legacy circuit breaker does the XT1SU3040AFF000XXX replace?
This Tmax XT1 breaker serves as a direct, modernized replacement for the legacy ABB Tmax T1N040TL molded case circuit breaker.
Are the thermal and magnetic trip thresholds adjustable on this breaker?
No. The XT1SU3040AFF000XXX features a fixed thermal and fixed magnetic (LI) trip unit. Both the long-time overload and instantaneous short-circuit protection settings are factory-set and cannot be modified in the field.
Is the XT1SU3040AFF000XXX circuit breaker reverse feed capable?
Yes, this Tmax XT1 molded case circuit breaker is reverse feed capable, allowing it to be back-fed safely in compatible distribution equipment.
Does this breaker require a plug-in base for installation?
No. This is a unit mount, bolt-on circuit breaker. It is designed to be mechanically fastened directly to the panelboard chassis or mounting plate rather than utilizing a withdrawable or plug-in conversion kit.
Can the XT1SU3040AFF000XXX be utilized in direct current (DC) applications?
Yes, in addition to its AC ratings, this thermal magnetic breaker is rated for use in DC systems up to 250VDC with a 42kA interrupting capacity.
Is the XT1SU3040AFF000XXX rated for use with HVAC equipment?
Yes, this breaker is HACR rated, meaning it is certified for safe use with heating, air conditioning, and refrigeration equipment that requires group motor protection.
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