Curtis Industries
A Division of Powers Holdings, Inc.
1-800-657-0853
Dimensions are in inches and millimeters
unless otherwise speci¿ed.
Values in parentheses are metric equivalents.
49
BARRIER STYLEHigh Voltage/Current
6SeFi¿Fations:
Wire Range:
T – UL Recognized for No. 6AWG to No. 1/0AWG
U – UL Recognized for No. 6AWG to 250MCM
No. of Terminals: T – 1 thru 6
U – 1 thru 4
Voltage Rating: 600V CSA and UL
Tightening Torque:
T – 50 in.-lb.
U – 275 in.-lb.
Current Rating: T: 125 amps, U: 250 amps
Housing:
Material Phenolic
Continuous Use
Temp. (UL Index) 150°C (302°F)
Flammability Rating 94V-1
Water Absorption
(24 hrs. % wt. gain) 0.5%
Chemical Resistance Resistant to most organic
solvents
Breakdown Voltage: T U
Terminal - Terminal 11,000V Typ. 9,000V Typ.
Terminal - Ground 9,700V Typ. 9,600V Typ.
Note: Speci¿cations contained herein are subMect to change
without notice.
Number of
Terminals
Mounting
Dimensions
Overall
Dimensions
Inches
Metric
(mm)
Inches
Metric
(mm)
1 2.183 55.46 2.683 68.16
2 3.342 84.88 3.842 97.58
3 4.500 114.31 5.000 127.01
4 5.659 143.73 6.159 156.43
5 6.817 173.16 7.317 185.86
6 7.976 202.59 8.476 215.29
How to Order
Types T and U terminal blocks are ordered by listing a
composite number made up of the model designation followed
by the number of terminals required for the application.
Example: a 4-pole terminal block becomes T-4 or U-4
When ordering combinations of both types, the composite
number is made up of both model designations followed by
total number of poles and number of each type. A composite
of two T terminals followed by two U terminals thus is
converted to stock number TU-4 (2T, 2U).
Combining these types with types L, O, S, H and BT would
follow the same ordering format. (Note: When combined with
types H or BT, a special adapter is required.)
Types T & U Accessories
COVERS
Types T and U – Plain cover of 1/16" thick bakelite is perma-
nently positioned to block with two screws. Factory-assem-
bled or customer-installed.
To order, specify:
T – Part No. 268A157 – 1 thru 6 terminals
U – Part No. 268A157 – 1 thru 4 terminals
Dimensions shown are ± 0.030"
Types T & U Terminal Dimensions
NOTE: Lugs are not funished with blocks
mm dim. are shown in parentheses
O.D.
M.D.
1.500
(38.1)
1.00
(25.4)
2.50
(63.5)
1.875
(47.62)
TU
.218 x .375 Lg. Mtg. Holes
(5.53) x (9.52)
