1
GEH3418 INSTALLATION INSTRUCTIONS
AuxiliarySwitch Device
For Type TEB, TED, THED Circuit Breakers
CAUTION: Before inspecting or beginning
any maintenance work on the breaker, it
must be disconnected from all voltage
sources, both power and control, and
breaker must be off (open).
NOTE: Any work requiring cover removal
of a sealed breaker voids UL listing. The
UL label must be destroyed.
ONE STAGE AUXILIARY
SWITCH (LEFT POLE
ASSEMBLY SHOWN)
DESCRIPTION
These instructions pertain to both one and two
stage auxiliary switch devices. The single stage
devices can be modified to mount in either the
left or right pole of a three pole circuit breaker
(right pole only when installed in a two pole
circuit breaker). The two stage auxiliary
switches are unique left and right designs and
install accordingly. The auxiliary switches are
shown in Figure 1. Also shown is the actuator
assembly which must be attached to the circuit
breaker separately.
SWITCH ACTUATOR
ASSEMBLY
Each stage consists of an "A-B" element in which
the "A" contact is in the same state (open or
closed) as the circuit breaker contacts and the
"B" contact.
TWO STAGE AUXILIARY SWITCH
(LETT POLE ASSEMBY SHOWN)
—
Figure 1. Auxiliary switches and actuator
—
ilr
"A"
"A"
CONTACT
CONTACT
''B"
CONTACT
"B"
CONTACT
Tꢀ_____
B. Circuit Breaker Closed (ON)
A. Circuit Breaker Open (OFF) or Tripped
—
Figure 2. Schematicdiagram ofone "A-B" element
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GENERAL
ACTUATOR
ASSEMBLY
HOLE FOR
TRIP BAR
POSITIONING PIN
To install the switch, simply position the device in
either the right or left pole of the breaker base by
inserting the positioning pin in the location hole in
the molded base. This hole is just below the arc
chute and is to the right of the contact arm.
No screws or fasteners are required. (See Figure
5).
SINGLE STAGE ASSEMBLY
DRILLING OF HOLE IN BREAKER COVER
(SINGLE SWITCH ONLY)
—
Figure 4. Actuator assembly installed in leftpole
The leads of the auxiliary switch are intended to
exit the breaker through the cover. Accordingly, a
½ inch hole must be drilled in the side of the
cover. The hole must be drilled on the same side
that the device is installed. The dimensions for
the location of the hole are given in Figure 6.
INSTALLATION OF AUXILIARY
SWITCH DEVICE
It is necessary that the breaker mechanism be in
the tripped position in order to install the
auxiliary switch. This is accomplished by rotating
ONE .50 DIA. HOLE FOR ONE
STAGE SWITCH
in Figure 4,
ward towards
the common trip bar shown
downward into the breaker (or for
the line end). Be sure to do this on one of the
outside poles taking care to keep fingers away
from the latch area in the center pole. The cradle
springs upward with substantial force when the
mechanism is tripped.
SINGLE SWITCH ONLY
—
Figure 6. Cover Drilling Dimensions for Lead Hole, (Left Side Mounting),
For Single Switch Only
The leads on the auxiliary switch are formed to
the left for left pole mounting. If it is
REASSEMBLY OF BREAKER
(SINGLE SWITCH ONLY)
right pole
desired to mount the switch in the
(sin
le switch onl
g
y), the bundle of leads must be
undone and then reroute towards the right.
Thread the three leads through the hole in the cover
(three wires per hole). Replace the handle and the
insulating tubes to their positions in the base of the
breaker as shown in Figure 3. Before lowering the
cover into position, be sure to reinstall all barriers
and parts that may have inadvertently been removed
from their proper location.
TWO STAGE SWITCH
The leads for either the left or right mount
formed at the factory.
switch have been
The wire
restraints have
been pre assembled at
for ease ofassembly.
the factory
Align the cover over the base of the breaker. The
auxiliary switch may pop out of position when the
leads are being threaded through the cover and/or
when the cover is being placed on the base. If this
occurs, it will have to be carefully manipulated into
position. This can be accomplished by lowering the
cover as far as possible and then popping the pin on
the auxiliary switch into the locating hole by means
of a narrow screwdriver or shim slid between the
case and cover along the side of the breaker. The
cover will not close onto the breaker properly unless
the auxiliary switch is in place. When the switch is
properly located, the breaker cover should snap into
place over the base.
LINE
END
Fasten the cover by means of the four cover screws
which were initially removed as shown in Figure 3.
The one screw, which was originally covered with
sealing compound, must remain unsealed as an
indicator that the breaker cover has been removed.
—
Figure 5. One Stage Auxiliary Switch Installed in Left Pole
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REASSEMBLY OF THE BREAKER
(TWO STAGE SWITCH)
STRAIN RELIEF FOR LEADS
(SINGLE STAGE)
Replace the handle and the insulating tubes to
their po sitions in the base of the breaker as
shown in Figure 3. Before lowering the cover into
position, be sure torein stall all barriers and parts
that may have inadvertently been removed from
their proper location.
A strain relief plug (Heyco type 5N-4) is provided
to protect the leads at the point where they exit
the breaker. The plug, as shown in Figure 7, is
leads with its
to be closed over the three
narrow
exit hole
then be
end
Slid as closely as possible
to the lead
the breaker cover. The plug should
in
clamped shut with pliers and pushed
Align the cover over the base of the breaker.
Lower the cover onto the base encompassing the
auxiliary switch. Ensure the alignment pin of the
into the hole until it snaps into position.
auxiliary switch is correctl located in the
y
locating hole of the base. Carefully position the
factory installed wire restraintswithin the slots of
the cover. The cover will not close onto the
breaker base properly unless the auxiliary switch
is in place. (See Figure 9).
—
Figure 7. Strainrelief plug
Fasten the cover by means of the four cover
screws which were initially removed as shown in
Figure 3. The one screw, which was originally
covered with sealing com pound, must remain
unsealed as an indicator that the breaker cover
has been removed.
TWO STAGE ASSEMBLY
SLOTTING THE BREAKER COVER
(TWO STAGE SWITCH)
Slot the cover on the same side as the auxiliary
be installed. There should be
switch is to
two
See
slots, one for each
set of three wire leads.,
Figure 8 for shape and loca tion of slots
to be filed.
TWO STAGE SWITCH
LOAD
END
LINE
END
—
Figure 9.
SLOTAS SHOWN, SIDE WIRING
MODIFICATION (FOR LEFT SIDE MOUNTING)
CIRCUIT CHECK
Before being connected to external wiring, the
contacts of the auxiliary switch should be
electrically checked us-ing a continuity tester
with the circuit breaker in the OFF, ON, and
tripped positions. The state of the contacts
should agree with the schematics in Figure 2. Use
the red "Twist to Trip" button to trip the breaker.
—
Figure8.
These instructions do not purport to cover all details or variations in equipment nor, to
provide contingency to be met in connection with installation, operation, or maintenance.
Should further information be desired, or should particular problems arise which are not covered
sufficiently for the purchaser’s purposes, the matter should be referred to ABB Company.
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ABB Inc.
305 Gregson Drive
Cary, NC 27511.
electrification.us.abb.com
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