Cut Sheet

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Aluminum H-Tap Connectors and Covers
Connectors & Grounding — Blackburn
®
Overhead Connectors
For combinations of aluminum-to-aluminum
and aluminum-to-copper conductors.
WR
™
Wide-Range
Aluminum Tap Connectors
• Made of 1350 aluminum alloy for high strength and high conductivity
• Standard compression tools and dies install all sizes — no special tools needed
• Field-proven ribbed design enables excellent connector/conductor contact
without distorting the conductor’s shape
• Fold-in tabs provide positive tab interlock as tool closes
• Prefilled with oxide inhibitor held captive in the rib/connection area
• RUS Accepted
• Complies with ANSI C119.4 specifications
WR
™
O and D Die Seven-Connector Program
CAT. NO.
CONNECTOR
NUMBER
CONDUCTOR RANGE
DIAMETER (IN.)
CONNECTOR
LENGTH
(IN.)
STANDARD CONDUCTOR COMPACT CONDUCTOR
MAIN TAP MAIN TAP MAIN TAP
ACSR STR. SOL. ACSR STR. SOL. ACSR STR. ACSR STR. MAX. MIN. MAX. MIN.
WR159
or
OB 44
1
#2, #4,
#6
#1, #2,
#3, #4,
#6
#2, #4,
#6
#2, #4,
#6
#1, #2,
#3, #4,
#6
#2, #4,
#6
#1, #2,
#4, #6
#1, #2,
#3, #4,
#6
#1,# 2,
#4, #6
#1, #2,
#3, #4,
#6
.332 .162 .332 .162
1
7
⁄16
OB 1 1
1
⁄2
WR189
or
OB 101
2
1/0,
#1, #2
2/0,
1/0,
#1, #2
3/0,
2/0,
1/0, #1
#2, #4,
#6
#1, #2,
#3, #4,
#6
1/0, #1,
#2, #4,
#6
2/0,
1/0, #1,
#2
2/0,
1/0, #1,
#2
#1, #2,
#4, #6
#1, #2,
#3, #4,
#6
.419 .266 .332 .162
1
11
⁄16
OB 2 1
3
⁄4
WR289
or
DB 202
3
2/0,
1/0
3/0,
2/0
4/0,
3/0
#2, #4,
#6
#1, #2,
#3, #4,
#6
1/0, #1,
#2, #4,
#6
2/0,
1/0, #1,
#2
2/0,
1/0, #1,
#2
#1, #2,
#4, #6
#1, #2,
#3, #4,
#6
.470 .398 .332 .162
1
13
⁄16
DB 3 1
7
⁄8
WR279
or
DB 2020
4
2/0,
1/0, #1
3/0,
2/0,
1/0
—
2/0,
1/0, #1
3/0,
2/0,
1/0
—
3/0,
2/0,
1/0
3/0,
2/0,
1/0
3/0,
2/0,
1/0
3/0,
2/0,
1/0
.470 .336 .470 .336 1
13
⁄16
WR379
or
DB 404
5
4/0,
3/0
4/0 —
#2, #4,
#6
#1, #2,
#3, #4,
#6
1/0, #1,
#2, #4,
#6
266
18
⁄1,
250,
4/0
266,
250,
4/0
#1, #2,
#4, #6
#1, #2,
#3, #4,
#6
.563 .475 .332 .162
1
13
⁄16
DB 5 1
7
⁄8
WR399
or
DB 4020
6
4/0,
3/0
4/0,
3/0
—
2/0,
1/0, #1
2/0,
1/0
3/0,
2/0
266
18
⁄1,
4/0,
3/0
266,
250,
4/0
2/0,
1/0
3/0,
2/0,
1/0
.563 .461 .447 .338
2
3
⁄16
DB 6 2
1
⁄2
WR419
or
DB 4040
7
4/0,
3/0
4/0,
3/0
—
4/0,
3/0
4/0,
3/0
—
266
18
⁄1,
4/0,
3/0
266,
250,
4/0
266
18
⁄1,
4/0,
3/0
266,
250,
4/0
.563 .461 .563 .461
2
7
⁄16
DB 7 2
1
⁄2
Note: Connector numbers 1 and 2 use “O” Die; 3–7 use “D” Die.
WR189 or OB101