ABB - Installation Products X 1 U 402 - Uninsulated Aluminum Service Entrance Compression Splices - 840 die series, Conductor A: Pink, - Solid Aluminum, - Solid Copper, 4/0 Stranded, 4/0 ACSR, Conductor B: Red, 1 Solid Aluminum, 1 Solid Copper, 1 and 2 Stranded, 2 ACSR.
ABB - Installation Products

X 1 U 402

UPC: 783786759651


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Overview

The ABB X 1 U 402 uninsulated aluminum service entrance compression splices (840 die series) provide reliable, high-conductivity connections for solid aluminum, solid copper, stranded, and ACSR conductors in service entrance applications. Designed for 4/0 AWG conductors (stranded or ACSR) on the pink terminal and 1-2 AWG conductors (solid/stranded aluminum, solid copper, or ACSR) on the red terminal, these splices ensure consistent performance in residential, commercial, and light industrial installations. The compression splice design delivers superior mechanical strength and electrical continuity, reducing the risk of loose connections or corrosion over time. Compatible with standard 840 die tools, these splices simplify installation while meeting NEC and UL requirements for service entrance wiring. Ideal for meter sockets, load centers, and distribution panels where durable, low-maintenance terminations are critical. The aluminum construction resists oxidation, while the color-coded terminals (pink for 4/0, red for 1-2 AWG) streamline identification and reduce installation errors. No insulation is required, making these splices a cost-effective solution for exposed or indoor applications where space and accessibility are priorities.
  • 840 die series compression splices for 4/0 and 1-2 AWG conductors
  • Compatible with solid aluminum, solid copper, stranded, and ACSR conductors
  • Color-coded terminals (pink for 4/0, red for 1-2 AWG) for easy identification
  • Uninsulated design for exposed or indoor service entrance applications
  • Meets NEC and UL requirements for reliable, low-maintenance connections

Specifications

Application
Ideal for Large Residential and Commercial Service Drops
Color
Pink/Red
Conductor Range
Side A: 4/0 STR , 4/0 ACSR. Side B: #1 SOL , #1 to #2 STR , #2 ACSR
Connection
Compression
Insulation
None
Material
Aluminum
Number Of Conductors
2
Size
4 inches long
Special Features
Constructed from Aluminum. Provides high conductivity. Prefilled with Oxide inhibitor to prevent oxidation and keep out moisture. Solid center barriers Enable quick Positioning, Proper Distribution of Inhibitor around the wire and Current Equalization on Stranded Conductors. Splices are marked with strip lengths, die codes, and compression locations for easy identification and easy installation
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)
0.2000 L
Package Weight (Metric)
0.0910 kg
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Frequently Asked Questions

What conductor sizes are compatible with the X 1 U 402?

The pink terminal supports 4/0 stranded, 4/0 ACSR, while the red terminal supports 1-2 stranded, 1-2 ACSR, solid aluminum, and solid copper conductors.

What tool is required to install the X 1 U 402?

A standard 840 die compression tool is required to crimp the splice onto the conductors.

Are these splices UL-listed?

Yes, the ABB X 1 U 402 meets UL requirements for service entrance compression splices.

Is the X 1 U 402 suitable for outdoor use?

The uninsulated design is intended for indoor or protected outdoor applications where corrosion resistance is provided by the installation environment.

Can the X 1 U 402 be used with copper-clad aluminum conductors?

The splices are designed for solid aluminum, solid copper, stranded, and ACSR conductors as specified.

Frequently Asked Questions about ABB - Installation Products

What technical support does ABB - Installation Products offer?

ABB - Installation Products offers comprehensive technical support through a dedicated technical support hotline at 888-385-1221 (Option 1), available 7:00 a.m. - 5:00 p.m. CST, Monday-Friday. Their support services include emergency services, on-site support, remote diagnostics, installation assistance, equipment assessments, and repair coordination. Customers can also access technical resources via email at [email protected].

What are the main product lines offered by ABB - Installation Products?

ABB - Installation Products offers a comprehensive range of electrical distribution and protection solutions, including panelboards like ReliaGear® and ProLine, circuit monitoring systems, softstarters, and modular bus bar systems. Key product lines cover low voltage applications with specialized offerings such as the SMISSLINE TP flexible power distribution bus system, Ekip UP protection and metering relays, and enclosed/open softstarters for industrial and commercial sectors.

What are the key features of ABB - Installation Products products?

ABB - Installation Products feature advanced, user-friendly design elements optimized for industrial applications. Key features include 2-in-1 Push-in Spring connection technology allowing ferruled and rigid cable connections, tool-free mounting, robust vibration and shock-proof design, and front-accessible terminals. The products deliver high connection capacities up to 18.5 kW, support motor starting solutions, provide short-circuit fuseless protection to 100 kA, and enable faster, more intuitive installation with one-hand mounting and automated wiring capabilities.

What environmental ratings do ABB - Installation Products products have?

ABB - Installation Products offer robust environmental ratings across multiple standards, including IP54 to IP66 protection levels and NEMA Type 1 to Type 4X enclosures. These ratings ensure superior protection against dust, water, and corrosion for both indoor and outdoor industrial applications, with certifications that meet stringent environmental performance requirements.

What accessories are available for ABB - Installation Products products?

ABB - Installation Products offers a comprehensive range of accessories designed to enhance functionality and connectivity across industrial control systems. Key accessories include auxiliary contact blocks, signaling contacts, shunt trips, undervoltage releases, electronic timers, interlocks, interface relays, terminal blocks, and connection accessories. These accessories are compatible with SMISSLINE TP plug-in distribution systems and Unifix AD busbar systems, allowing for easy installation and configuration of manual motor starters, circuit breakers, and other electrical components.

What is ABB - Installation Products's warranty policy?

ABB - Installation Products offers a standard 1-year factory warranty for most installation products, with options to extend warranty coverage up to 5 years for specific product lines like low voltage circuit breakers. Extended warranty requires online registration through ABB's Extended Warranty Tool, which verifies product application and provides additional coverage for manufacturing defects and factory-mounted accessories.

What industries and applications are ABB - Installation Products products used for?

ABB - Installation Products serve critical electrical infrastructure needs across diverse industries including Energy, Manufacturing, Power Generation, HVAC, Marine, Food & Beverage, Mining, Pulp & Paper, Water Treatment, and Automotive. Their products cover essential applications such as switchgear, power distribution systems, circuit protection, digital control technologies, and drive systems, engineered for high-reliability environments with a strong emphasis on safety, efficiency, and sustainability.

What communication protocols do ABB - Installation Products products support?

ABB - Installation Products support a comprehensive range of industrial communication protocols, including Modbus RTU, PROFIBUS DP, PROFINET, EtherNet/IP, CANopen, DeviceNet, and IEC 61850. These protocols enable flexible connectivity across multiple industrial automation platforms, with high-speed data transmission capabilities up to 100 Mbps and support for various network topologies.

How are ABB - Installation Products products typically installed?

ABB - Installation Products are installed through a professional, systematic process emphasizing fast, intuitive wiring and tool-free mounting. Typical installation involves precise equipment verification, secure electrical connections, and comprehensive testing, including foundation frame assessment, busbar and cable connections, earthing system establishment, and thorough pre-commissioning functional tests to ensure optimal performance and reliability.

What certifications and standards do ABB - Installation Products products comply with?

ABB - Installation Products products meet rigorous international certifications including UL (United States), CSA (Canada), CE (European Community), UKCA (United Kingdom), EAC (Russia), and C-Tick (Australia & New Zealand). Our products comply with critical standards such as IEC 60947 series for low-voltage switchgear, functional safety standards EN 61800-5-2 and ISO 13849-1, ensuring high performance and reliability across industrial installation applications.