Built for industrial applications, the ABB XT1NU3020AFF000XXX is a 20A, 3-pole molded case circuit breaker from the SACE Tmax XT1N series. This unit-mount breaker fits ABB SACE Tmax XT panelboards and switchboards. It acts as a reliable replacement for older Tmax T1 series components. Featuring a 25kAIC rating at 480VAC, it uses a fixed thermal-magnetic trip unit. It is configured with front flat terminals on both sides, requiring separate lugs for wiring.
What does the "N" in the XT1NU3020AFF000XXX part number signify?
The "N" indicates a Normal interrupting capacity tier within the ABB Tmax XT family. For this 20A breaker, it provides a maximum interrupting rating of 50kAIC at 240VAC and 25kAIC at 480VAC.
What panelboards are compatible with the XT1NU3020AFF000XXX circuit breaker?
This XT1 frame breaker is designed for use with ABB SACE Tmax XT enclosures, as well as ABB ReliaGear neXT panelboards and SB switchboards.
Can I use the XT1NU3020AFF000XXX in a 500VDC system?
Yes, this breaker is rated for direct current applications up to 500VDC, providing a 35kAIC interrupting rating at that voltage in addition to its standard AC ratings.
Can the XT1NU3020AFF000XXX be reverse fed?
Yes, ABB Tmax XT1 thermal-magnetic circuit breakers are reverse feed capable. This allows power to be supplied to either the line or load side terminals without compromising the protection functions.
Are the trip settings adjustable on the XT1NU3020AFF000XXX?
No, this specific model features a fixed thermal-magnetic trip unit. Both the Long-Time and Instantaneous protection thresholds are factory-set and cannot be adjusted in the field.
Can this breaker be used to replace older ABB Tmax T1 series breakers?
Yes, the Tmax XT1 series is the direct replacement for legacy ABB Tmax T1 series circuit breakers, offering upgraded performance while fitting similar footprint requirements.
Does the XT1NU3020AFF000XXX support plug-in or withdrawable mounting?
No, this specific catalog number is a fixed, unit-mount breaker with a bolt-on connection. Plug-in or withdrawable configurations require different base components and conversion kits.
What do the "FF" letters indicate in the XT1NU3020AFF000XXX catalog number?
The "FF" designates that the breaker is a Fixed version (the first F) equipped with Front terminals (the second F).
Is the XT1NU3020AFF000XXX HACR rated?
Yes, ABB Tmax XT1 molded case circuit breakers are HACR rated, making them suitable for use with heating, air conditioning, and refrigeration equipment.
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