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External Accessories
Second ary Disconnects and Control Terminal Blocks
CAUTION: Do not attempt to install an accessory with
the breaker "Closed" or "Charged". Make certain
breaker is " Open" and " Discharged" as shown above.
Personal injury or mechanical damage may occur.
Secondary Disconnects
Secondary wiring connections to remote locations are
made to "secondary disconnects" on drawout breakers
and to "control terminal blocks" on fixed-mounted break
ers. The secondary disconnects and terminal blocks are
located along the sides of the breakers, as many as two
on each side. They are referenced as left top (L T), left
bottom (LB), right top (RT), and right bottom (RB). Left and
right are with respect to the user facing the breaker. The
terminal points of factory installed internal accessories are
identified on page 65. The same terminal point locations
should be used when an accessory is installed in the field.
Secondary Disconnects terminal points
62
Control Terminal Block mounted on fixed-mounted breaker.
Control Terminal Blocks
Control terminal blocks provide electrical access to the
internal accessories and trip unit of a fixed-mounted breaker.
A breaker can be equipped with up to four control terminal
blocks, each with 1 2 terminal points. The terminal blocks
accept #1 2 AWG user wiring. They are rated for 600 volts
application .
The terminal blocks are designed to be installed along
the sides of the breaker. They must be installed with a
terminal block mount. To i nstall the terminal block
assembly(s), attach them with screws to the breaker as
illustrated.
The control terminal blocks are referenced as left-top
(L T), left-bottom ( LB), right-top (RT), and right-bottom
(RB). Left and right are with respect to the user facing the
breaker. The recommended terminal points for access
ories added in the field are illustrated below.
NOTE: The addition of terminal blocks to a fixed
mounted circuit breaker adds 1 .5 inches to each side
or 3 inches overall.
Wires mounted on terminal block.
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