Standard Breakers have 3
power wires in
(L1-L2-L3) on the top,
and 3 power wires out
(T1-T2-T3) on the
bottom.
Any other control wires
will indicate some sort
of modification
accessory is installed!
Accessories can be
identified by small
labels on the breaker,
with part numbers such
as
a. (u-nzm7)
(230, 60) Indicates
under voltage trip which
needs 230 volt 60hz
applied to turn the
breaker on.
b. (a-nzm7)
(230,60) Indicates shunt
trip which needs 230
volt 60hz applied to
turn the breaker off.
c. (rhi, nhi,
ahi -xx) Would be
auxiliary contacts.
If the labels cannot be
read or to double check
their usage record all
the terminal numbers
that have control wires
on them, and your
KMparts Specialist
will advise you of your
best options.
Please note any of the
above when ordering.
Also check to see if
they are even used. If
they are present but
there are no wires on
them then chances are
you don’t need them.
