Square D TeSys Ultra Incoming ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$32.90
Square D TeSys Ultra Incoming Line Phase Barrier

Square D TeSys Ultra Incoming Line Phase Barrier

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Model: LU9SP0

In Stock (leaves warehouse same day if ordered before 3pm ET)

$32.90
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Square D TeSys Ultra Incoming Line Phase Barrier

The Square D TeSys Ultra incoming line phase barrier is an accessory engineered for use with TeSys U power bases LUB12, LUB32, LUB38, LUB120, LUB320, and LUB380, as well as the LUALB1 limiter block. It provides complementary electrical insulation between phases at the incoming line, and is compulsory for installations on a 690V AC network and a 440V AC network. Part of the Square D TeSys Ultra range (Compatibility Code LU9), this barrier helps maintain safe phase-to-phase separation in motor starter and power base assemblies.

Key Features

  • Power Base Compatibility: Designed to fit TeSys U power bases LUB12, LUB32, LUB38, LUB120, LUB320, and LUB380.
  • Limiter Block Compatibility: Also compatible with the LUALB1 limiter block for expanded TeSys U configurations.
  • Phase Insulation: Ensures complementary electrical insulation between phases at the incoming line for safer operation.
  • Network Voltage Compliance: Compulsory for use on a 690V AC network and a 440V AC network.
  • Range: Part of the Square D TeSys Ultra range, Compatibility Code LU9, Device Short Name LU9.
  • Mounting Support: Installs at terminals for straightforward integration onto the power base.
  • Packaging: Supplied in packs of 20 ea, with packaging made using recycled cardboard.

Certifications & Compliance

  • RoHS EUR Compliant, In Scope
  • Free of Substances of Very High Concern (SVHC) per REACH
  • Mercury Free
  • Toxic Heavy Metal Free

Technical Specifications

  • Toxic Heavy Metal Free: Yes
  • Warranty: 18 months
  • Take Back: No
  • Tier: 2
  • Returnability: Yes
  • Warranty Period: 18 months
  • Compatibility Code: LU9
  • Sustainable Packaging: No
  • Mercury Free: Yes
  • Packaging Without Single Use Plastic: No
  • Reach Free Shvc: Yes
  • Tier Id: 2
  • ROHS Eur In Scope: Yes
  • Recycled Metal Content At Cr Level: 0 %
  • Legacy WEEE Scope: In
  • Packaging Made With Recycled Cardboard: Yes
  • China ROHS Label: 1
  • Serviceability: No
  • With Recycled Cardboard: Yes
  • Without Single Use Plastic: No
  • ROHS Exemption Information: Yes
  • Traceability: No
  • WEEE Scope: Out
  • Device Short Name: LU9
  • Reach Free Of Svhc: Yes

Typical Applications

  • TeSys U Motor Starter Power Base Assemblies
  • Motor Control Centers and Starter Panels
  • 440V AC and 690V AC Industrial Electrical Networks
  • Industrial and Commercial Control Panel Builds

Why Square D?

Square D backs the TeSys Ultra range with components engineered for the demanding phase-insulation requirements of 440V AC and 690V AC networks, giving panel builders and OEMs a compatible, code-compliant accessory for their LUB power base assemblies. With RoHS compliance, mercury-free and toxic-heavy-metal-free construction, this phase barrier supports reliable, environmentally responsible motor control installations.

Manufacturer Resources

Product Specs

Product Type:
Motor Starter Accessory
Series:
TeSys Ultra
Standards:
RoHS Compliant
Department:
Electrical
Product Group:
Motor Control & Automation
Product Subgroup:
Motor Starters & Contactors

Square D LU9SP0 – Frequently Asked Questions

1) Which TeSys U power bases does the Square D LU9SP0 phase barrier fit?
The LU9SP0 incoming line phase barrier mounts on TeSys U power bases LUB12, LUB32, LUB38, LUB120, LUB320 and LUB380. It also fits the LUALB1 limiter block, so you can use it on power bases that have a limiter block stacked in the assembly.
2) Do I have to install phase barriers on a 690V TeSys U starter?
Yes. The Square D LU9SP0 barrier is compulsory on a 690V AC network and on a 440V AC network. On those systems it is not an optional accessory, it provides the complementary phase-to-phase insulation at the incoming line terminals that the installation requires.
3) Can an ABB BEA16-4 connecting link be used in place of the Square D LU9SP0 phase barrier?
No. The Square D LU9SP0 is a phase barrier that provides complementary electrical insulation between phases at the incoming line of TeSys U power bases LUB12, LUB32, LUB38, LUB120, LUB320, LUB380 and the LUALB1 limiter block. The ABB BEA16-4 is an insulated 3-pole connecting link for AF09-16 contactors and MS116/MS132 manual motor starters - it bridges poles between devices rather than inserting insulation between phases, and it is built to the ABB device footprint, not the TeSys U power base. They solve different problems on different hardware.
4) What does the TeSys Ultra incoming line phase barrier actually do in a starter panel?
It is an insulating barrier that sits at the incoming line terminals of a TeSys U power base and separates the phases from each other. In a tight control panel or motor control center where line conductors land close together, that separation is what keeps phase-to-phase clearance adequate at the terminal block.
5) How many Square D LU9SP0 phase barriers come in a pack?
The LU9SP0 is supplied in packs of 20 each. Since a three-phase power base typically needs barriers at the incoming line of each starter, one pack covers a run of starters rather than a single device. The cardboard packaging is recycled.
6) Can I use this phase barrier on an ABB or Eaton motor starter instead?
No. The LU9SP0 is specific to Square D TeSys U power bases and the LUALB1 limiter block, and will not mount on another manufacturer's starter. Other brands handle terminal-side accessories with their own parts, for example the ABB BEA series insulated 3-pole connecting link for AF09-16 contactors with MS116/MS132 manual motor starters, or the Eaton Freedom Series NEMA Size 00 mounting plate. Match the accessory to the starter family you are building on.
7) We standardize on Eaton Freedom starters - is there an Eaton equivalent to the Square D TeSys Ultra phase barrier?
The Eaton accessory in the same family of starter add-ons is the C321CMP0 Freedom series mounting plate for NEMA size 00 and 0 devices, but that is a mounting plate, not phase insulation. The Square D LU9SP0 phase barrier is specific to the TeSys Ultra range, compatibility code LU9, and seats at the terminals of TeSys U power bases LUB12 through LUB380 and the LUALB1 limiter block. If your panel runs TeSys U power bases on a 440V AC or 690V AC network, the barrier is compulsory and has to be the LU9 part.
8) Is the Eaton 9-1945 renewal part a substitute for the Square D LU9SP0?
No. The Eaton 9-1945 is a size 00 Series A1 renewal part for Eaton contactors and starters rated 480V - a replacement component for a worn Eaton device. The Square D LU9SP0 is a new-install insulation accessory that adds phase-to-phase separation at the incoming line of TeSys U power bases and is required on 690V AC and 440V AC networks. A renewal part for an Eaton A1 starter will not provide the TeSys U phase barrier function.
9) If my TeSys U panel runs below 440V, do I still need the LU9SP0 barrier or can I leave it out?
The Square D LU9SP0 phase barrier is called out as compulsory for installations on a 690V AC network and a 440V AC network, where the phase-to-phase clearance requirement is driven by that voltage. Below those levels it functions as complementary phase insulation on the TeSys U power base rather than a mandated part. Nothing in the comparable accessory set - the ABB BEA16-4 connecting link, ABB MSMN coded driver, Eaton H1019 control accessory, Eaton C321CMP0 mounting plate or Eaton 9-1945 renewal part - performs that incoming line phase insulation role, so there is no cross-brand stand-in if your spec calls for it.
10) Is the Square D LU9SP0 phase barrier RoHS compliant for a spec job?
Yes. The barrier is RoHS EUR compliant and in scope, free of REACH substances of very high concern, mercury free and free of toxic heavy metals. That covers the usual environmental declarations an institutional or OEM submittal package asks for on control panel components. It is made in Czechia.
11) What is the LU9 compatibility code on this Square D barrier?
LU9 is the TeSys Ultra compatibility code and device short name carried by this barrier. Square D uses it to group accessories that mate with the TeSys U range, so an LU9 accessory is intended for LUB power bases rather than for NEMA-style starters.
12) What is the difference between the Square D LU9SP0 and accessories like the ABB MSMN coded driver?
Both are starter accessories, but they address different functions. The ABB MSMN is a coded driver accessory for ABB MS series manual motor starters, used in the operating mechanism of that device. The Square D LU9SP0 is a passive insulating barrier that separates phases at the incoming line terminals of TeSys U power bases LUB12, LUB32, LUB38, LUB120, LUB320 and LUB380 plus the LUALB1 limiter block. Neither crosses over to the other platform.
How fast can I get the Square D LU9SP0 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Square D LU9SP0 come with a warranty?
Absolutely. The Square D LU9SP0 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Square D LU9SP0?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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