3. For UL Open Type, UL Type 1 or UL Type 12 drives, or UL Type 4X drives without
disconnect and fuse option, that have a minimum enclosure volume indicated
with ¤, no minimum enclosure volume is required but the drive must be
mounted inside an enclosure.
4. If combining a drive with an enclosure minimum volume specified and others
with an enclosure minimum volume indicated with ¤, start with the largest
specified enclosure minimum volume listed and add the drive volumes for the
other drives.
5. If you are only mounting drives with no enclosure minimum volume specified,
you have no restrictions on the enclosure size, but follow air clearances
specified in the drive hardware manuals for sufficient ventilation around each
drive.
6. UL Open Type, UL Type 1 and UL Type 12 drives, and UL Type 4X drives without
disconnect and fuse option, can be used inside of the enclosure. Use drive
volume for all three types listed in the table when installing multiple drives in
the enclosure.
7. The ABB circuit breaker part number listed in the table is a base part number.
• Symbol α represents 80% or 100% allowable continuous current. Options
allowed are U, Q, C and D.
• Symbol β represents the number of poles for the breaker. Options allowed
are 3 and 4.
• Symbol # represents trip units. Trip units allowed include A thru C, E thru
L, P thru Z. If using Ekip breakers, set the overload current of the circuit
breaker equal to or less than the value shown in the “CB Maximum Current”
column in the tables above.
• The digits indicated with an “*” represent accessories for the breakers and
have no impact on the drive UL listing or performance or rating of the
breaker.
• For the ABB circuit breaker configurator refer to:
https://lowvoltage-configurator.tnb.com/configurator/#/config/tmax_xt.
8. Ratings in the tables are maximum for the given circuit breaker frame size.
Breakers of the same frame size and interrupting rating with lower current
ratings are also allowed.
9. Do not use a circuit breaker with a lower KAIC rating even if the available
short-circuit current is less than 65 kA.
10. For 230 V drives: 230 V drives were tested with ABB inverse time circuit breakers
rated at 65 kA and 240 V. Other manufacturers' inverse time circuit breakers
can be used if they are UL 489 listed, they are 240 V or higher, they have a 65 kA
or higher interrupting rating and they have the same or lower nominal current
rating than the ABB specified circuit breaker.
11. For 230 V drives: Current limiting inverse time circuit breakers must not be
used.
306 Technical data
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