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Installation Instructions for TMQV
Circuit Breakers and Molded Case Switches
Figure 2. Circuit Breaker Mounting Bolt Drilling Plans
Line
End
I
2913
2.313
(58.75)
Figure 3. Circuit Breaker Esutcheon Dimensions
2-4. If an optional terminal end cover is to be installed with the
circuit breaker (usually line end only), it must be positioned before
cable is connected to terminals .
CAUTION
WHEN ALUMINUM CONDUCTORS ARE USED, THE APPLICATION OF
A SUITABLE JOINT COMPOUND IS RECOMMENDED TO REDUCE THE
POSSIBILITY OF TERMINAL OVERHEATING. TERMINAL OVERHEATING CAN
CAUSE NUISANCE TRIPPING AND DAMAGE TO THE CIRCUIT BREAKER.
2-5. After mounting the circuit breaker, line and load terminals and
accessory leads should be connected . (See accessory schematic
diagram on side of circuit breaker.)
N
ote :
If terminal shield or interphase barriers are to be installed on the circuit
breaker, install them after the terminals are connected .
.188 (4.78 mm) Dia. Hole for
Access to Push-to-Trip
DEH41188 Installation Instructions
2-6. If required, install terminal shield on circuit breaker cover with
mounting screws provided .
2-7 . If required, install an interphase barrier by sliding barrier into
dovetail grooves between terminals .
2-8. After the circuit breaker is installed, check all mounting hard-
ware and terminal connecting hardware for correct torque loading.
Torque values for line/load terminals are given in Tables 1, 2, and 3
and on the circuit breaker nameplate .
Table 1. Terminal Types
Terminal
Terminal
Catalog #
Body
Screw
(Not orderable)
Material
Head Type
3TA225FD
Aluminum 3/16 Socket
Hex
3TA225CVK
Aluminum 5/16 Socket
Hex
2TA225CVK
Aluminum 5/16 Socket
Hex
3TA100FD
Aluminum Slotted
3T100FB
Steel
Slotted
3T150FB
Stainless
Slotted
Steel
3TA150F3K
Aluminum 5/32 Socket
Hex
3TA150F6K
Aluminum 3/32 Socket
Hex
Note: Terminal wire connectors are UL listed for standard wire sizes as defined in UL 486A
and UL486B.
Package of Three
Individual Terminal Identified as TA225FD1
Package of Two
Table 2. Terminal Torque Values for Slotted Head
Metric Wire
Torque Value N.m
Range
2.5-6
3.96
10
4.52
16-25
5.09
35-95
5.65
Effective November 2016
AWG
Metric
Torque
Wire
Wire
Value, Lb.
Wire
Range
Range
Type
in.( N.m)
#4-4/0
25-95
Cu/Al
120 (13.6)
#6-300 16-150 Cu/Al
275 (31)
#6-300 16-150 Cu/Al
275 (31)
#14-1/0 2.5-5.0
Cu/Al
See Table 2
#14-1/0 2.5-50
Cu/Al
See Table 2
#4-4/0
25-95
Cu
See Table 2
Only
#14-2
2.5-25
Cu/Al
70 (7.9)
#14-6
2.5-10
Cu/Al
25 (2.8)
AWG Wire Range
Torque Value,
Lb.-In.
#14-#10
35
#8
40
#6-#4
45
#3-4/0
50
3
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