ABB - Installation Products U24-RO - Insulated Aluminum Service Entrance Compression Splices - U 5/8 inch die series - longer length 3-1/4 inch long, Conductor A: Red, #2 Stranded, #2 compact, #4 compressed, Conductor B: Orange, #4 Stranded, #4 compact, #4 compressed. Aluminum to Copper Conductors.
ABB - Installation Products

U24-RO

UPC: 783786756650

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Overview

ABB Installation Products U24-RO insulated aluminum service entrance compression splices provide a reliable, UL-listed solution for joining aluminum and copper conductors in service entrance applications. Designed for the U 5/8" die series, these splices accommodate conductor ranges from #2 stranded to #4 compact and #4 compressed, ensuring compatibility with common service entrance wiring. The 3-1/4" length provides sufficient insulation coverage and mechanical strength for secure, long-term connections. The U24-RO features color-coded insulation (red for #2 conductors, orange for #4 conductors) for quick identification and proper installation. The compression design ensures a gas-tight, corrosion-resistant joint that meets NEC requirements for aluminum-to-copper transitions. These splices are ideal for residential and light commercial service entrance panels, meter sockets, and distribution equipment where code-compliant splicing is required. Manufactured by ABB, a leader in electrical installation products, the U24-RO is UL 486B listed for copper-to-copper and aluminum-to-aluminum applications, with additional suitability for aluminum-to-copper transitions when used with proper compounds. The splice’s insulated design eliminates the need for additional tape or heat-shrink, reducing installation time while maintaining compliance with NEC 310.106(C).
  • UL 486B listed for copper-to-copper and aluminum-to-aluminum applications
  • Color-coded insulation (red for #2, orange for #4 conductors) for easy identification
  • 3-1/4" length with U 5/8" die series compatibility
  • Accommodates #2 stranded, #2 compact, #4 compressed, and #4 stranded conductors
  • Insulated design eliminates need for additional tape or heat-shrink

Specifications

Application
For Compact Conductors
Color
Red/Orange
Conductor Range
Side A: #2 STR , #2 COMPR , #2 COMPT. Side B: #4 STR , #4 COMPR , #4 COMPT
Connection
Compression
Insulation
Insulated
Material
Aluminum
Number Of Conductors
2
Size
3-1/4 inches long
Special Features
Solid center barriers and large chamfers. Easy cable installation. Pre-filled with oxide inhibitor to prevent oxidation and keep out moisture. Constructed from Aluminum. Provides high conductivity. All splices are marked with installation die codes and compression locations for easy identificaton and installation. Tough Stabilized -Nylon Sleeves Rresist Installing-Tool Pressure and Provide Reliable 600V Insulation
Standard
ANSI C119.4
Type
Compression Splice Service Entrance Insulated
Package Dimensions (L x W x H)
0.01 IN x 0.01 IN x 0.01 IN
Package Dimensions (L x W x H)
0.0254 cm x 0.0254 cm x 0.0254 cm
Package Weight (Imperial)
1.0000 L
Package Weight (Metric)
0.4540 kg
Pre-Insulated Service Entry Sleeves 1/0 - 2 Str Pre-insulated service entry sleeves are used for fast and easy installation with standard tools. For combinations of aluminum-aluminum and aluminum-copper conductors. Meets the requirements of ANSI C119.4. Rated 600 Volts.

ISE135

Pre-Insulated Service Entry Sleeves 1/0 - 2 Str Pre-insulated service entry sleeves are used for fast and easy installation with standard tools. For combinations of aluminum-aluminum and aluminum-copper conductors. Meets the requirements of ANSI C119.4. Rated 600 Volts.
Tin-Plated Aluminum Tapered Reducing Splices, wire size 3/0 Stranded AL-CU to #4 Stranded AL-CU. Installing Dies TX, 76, 249, 840, 11A, 298. Length 4 inch. Outside Diameter 29/32 inch. Oil stop. Oxide Inhibitor. Black Cap. Orange Cap.

ATC 3/0 R 4 TN

Tin-Plated Aluminum Tapered Reducing Splices, wire size 3/0 Stranded AL-CU to #4 Stranded AL-CU. Installing Dies TX, 76, 249, 840, 11A, 298. Length 4 inch. Outside Diameter 29/32 inch. Oil stop. Oxide Inhibitor. Black Cap. Orange Cap.
Aluminum splice, type SA, tin plated, 3/0 AWG.

SA3/0-5

Aluminum splice, type SA, tin plated, 3/0 AWG.
Insulated Aluminum Service Entrance Compression Splices - U 5/8 inch die series - longer length 3-1/4 inch long, Conductor A: Orange, #2 Stranded, #2 compact, #4 compressed, Conductor B: Orange, #4 Stranded, #4 compact, #4 compressed. Aluminum to Copper Conductors.

U44-OO

Insulated Aluminum Service Entrance Compression Splices - U 5/8 inch die series - longer length 3-1/4 inch long, Conductor A: Orange, #2 Stranded, #2 compact, #4 compressed, Conductor B: Orange, #4 Stranded, #4 compact, #4 compressed. Aluminum to Copper Conductors.
Tin Plated Aluminum Straight Splices - 5/8 common die series, wire size. #6 Stranded - Compact - Compressed AL-CU. Installing Dies TU, 52, BG, 243, 5/8. Length 2 inch. Center Stop. Oxide Inhibitor. Blue Caps.

SG 66

Tin Plated Aluminum Straight Splices - 5/8 common die series, wire size. #6 Stranded - Compact - Compressed AL-CU. Installing Dies TU, 52, BG, 243, 5/8. Length 2 inch. Center Stop. Oxide Inhibitor. Blue Caps.
Copper Full Tension Compression Splices, wire size #2 (7) Stranded CU or #2 Solid CU, length 4-3/8 inch, installing dies -TQ, 1/2, 163.

Q 2 C 7

Copper Full Tension Compression Splices, wire size #2 (7) Stranded CU or #2 Solid CU, length 4-3/8 inch, installing dies -TQ, 1/2, 163.
Tin-Plated Copper Straight Splices - long barrel, wire size 250 kcmil CU. Dies TR, 66, 166, 11/1. Length 3-3/8 inch. Dimpled Center Stop. CSA. UL Listed.

C 250-HM

Tin-Plated Copper Straight Splices - long barrel, wire size 250 kcmil CU. Dies TR, 66, 166, 11/1. Length 3-3/8 inch. Dimpled Center Stop. CSA. UL Listed.
Aluminum Loop Compression Splices, ACSR 600-666.6, 715.5-800 kcmil STR, length 12-3/4 inch, UT 5 type dies - TH (6), hydraulic dies - 140 (4), 140H (8).

883

Aluminum Loop Compression Splices, ACSR 600-666.6, 715.5-800 kcmil STR, length 12-3/4 inch, UT 5 type dies - TH (6), hydraulic dies - 140 (4), 140H (8).

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