Square D TeSys Ultra Reversing...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$901.86
Square D TeSys Ultra Reversing Power Base, 3P, 12A/690V, 110-240VAC/DC Coil

Square D TeSys Ultra Reversing Power Base, 3P, 12A/690V, 110-240VAC/DC Coil

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Model: LU2B12FU

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

$901.86
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Square D TeSys Ultra Reversing Power Base, 3P, 12A/690V, 110-240VAC/DC Coil

The Square D TeSys Ultra Reversing Power Base is a TeSys U standard reversing power base with 3 poles (3NO), rated 12A/690V, that pairs with a TeSys U control unit (LUC series) to form a reversing starter controller for 3-phase motors up to 5.5kW@400V. The control circuit accepts 110-240VAC/DC coil voltage, and the base carries UL, CSA, CE, ATEX, and Marine certifications.

Key Features

  • Power Circuit: 3 poles (3NO) rated 12A/690V (Ie: 12A <=440V, 12A 500V, 9A 690V) for motors up to 5.5kW@400V.
  • Control Circuit: Coil voltage 110...240V AC 50/60Hz or 110...220V DC; compatible with control units LUC.X6FU, LUC.1XFU, LUC.05FU, and LUC.12FU.
  • Ingress Protection: IP20 (front panel and wired terminals), IP40 general rating, IP20 on other faces per IEC 60947-1/60947.
  • Insulation & Withstand Voltage: Rated insulation voltage 600V (UL/CSA), 690V (IEC); rated impulse withstand voltage 6kV per IEC 60947-6-2.
  • Breaking Capacity: Ics up to 50kA at 230V/440V, 10kA at 500V, and 4kA at 690V.
  • Utilization Category: AC-41, AC-43, and AC-44.
  • Mechanical Durability: 15 Mcycles rated life; max operating rate 3600 cyc/h.
  • Fixing Mode: Screw-fixed to plate or clipped to DIN rail.

Certifications & Compliance

  • ASEFA
  • CCC
  • CE
  • UL
  • CSA
  • ATEX
  • Marine
  • EAC
  • Standards: EN 60947-6-2, UL 60947-4-1 (phase barrier), CSA C22.2 No 60947-4-1 (phase barrier), IEC 60947-6-2

Technical Specifications

  • Warranty: 18 months
  • Warranty Period: 18 months
  • Sustainable Packaging: Yes
  • Mercury Free: Yes
  • Packaging Without Single Use Plastic: Yes
  • ROHS Eur In Scope: Yes
  • Recycled Metal Content At Cr Level: 0 %
  • Poles Description: 3P
  • China ROHS Label: 7
  • With Recycled Cardboard: Yes
  • WEEE Product Category: 5
  • WEEE Scope: In
  • China ROHS In Scope: No
  • Return Indicator: Y
  • Suitability For Isolation: yes
  • Take Back: No
  • Returnability: Yes
  • Operating Altitude: 6561.68 ft (2000 m)
  • Carbon Footprint: 27.7849170969061
  • Installation Carbon Footprint: 9.04319632294915e-02
  • Compatibility Code: LU2B
  • Ambient Air Temperature For Storage: -40-85 °C
  • WD Status: 1 - GSC certified

Typical Applications

  • Motor Protection and Reversing Control
  • 3-Phase Motor Starters up to 5.5kW@400V
  • Industrial Machine Control Panels
  • DIN-Rail Mounted Control Assemblies
  • Panelboard and Motor Control Center Wiring

Why Square D?

Square D backs this power base with UL, CSA, CE, ATEX, and Marine certifications plus a 15 Mcycle durability rating, delivering reliable, code-compliant performance for demanding motor control installations. Backed by an 18-month warranty, it works seamlessly with TeSys U control units for a complete reversing starter solution.

Manufacturer Resources

Product Specs

Product Type:
Power Base
Voltage Rating:
690V
Amperage Rating:
12A
Configuration:
3-Pole (3NO)
Listing:
UL Listed
Standards:
IEC 60947-6-2
Series:
TeSys Ultra
Department:
Electrical
Product Group:
Motor Control & Automation
Product Subgroup:
Motor Starters & Contactors

Square D LU2B12FU – Frequently Asked Questions

1) Does the Square D LU2B12FU reversing power base work on its own, or do I need a control unit too?
The LU2B12FU is only the power base half of a TeSys U starter. It has to be paired with a TeSys U control unit from the LUC series to become a working reversing starter. Square D lists the compatible control units as LUC.X6FU, LUC.1XFU, LUC.05FU and LUC.12FU. Order the base and the matching control unit together or the assembly will not function.
2) What size 3-phase motor will a TeSys U 12A reversing base handle?
Up to 5.5 kW at 400 V. The power circuit is 3-pole (3NO) rated 12 A at 690 V, with operational current of 12 A up to 440 V, 12 A at 500 V and 9 A at 690 V. Note the derate at 690 V: if your motor runs at that voltage, size against 9 A, not 12 A.
3) Will a 120V control circuit drive this reversing base, or do I need a separate coil voltage?
A 120 V control circuit is inside the range. The coil accepts 110 to 240 V AC at 50/60 Hz, or 110 to 220 V DC, so it covers common 120 V and 208/240 V control supplies as well as DC control without a different base.
4) Is this TeSys U base UL listed for use in a US control panel?
Yes, UL Listed, and also CSA, CE, ATEX, Marine, CCC, ASEFA and EAC. Standards cited are UL 60947-4-1 and CSA C22.2 No 60947-4-1 (phase barrier) plus EN/IEC 60947-6-2. Rated insulation voltage is 600 V under UL/CSA and 690 V under IEC, so size US panel clearances to the 600 V figure.
5) Do I need an extra enclosure for a TeSys U power base in a dusty plant?
Plan on one. Protection is IP20 at the front panel and wired terminals and IP20 on the other faces, with an IP40 general rating per IEC 60947-1/60947. IP20 is finger-safe against solid objects but offers no dust or water protection, so the base belongs inside a rated enclosure in a dirty or wet area.
6) Should I use a reversing power base or a standard non-reversing one?
Use the reversing base only if the motor has to run both directions, for example a conveyor, hoist, gate or valve actuator. It switches two phases internally so forward and reverse come off one assembly with one control unit. For a single-direction pump or fan, a standard non-reversing TeSys U base is the simpler and smaller choice. The LU2B12FU is the standard reversing version, compatibility code LU2B.
7) What fault current can this motor starter base take, and can I use it as an isolating means?
Breaking capacity Ics runs up to 50 kA at 230 V and 440 V, 10 kA at 500 V and 4 kA at 690 V, with a 6 kV rated impulse withstand per IEC 60947-6-2. Square D also states suitability for isolation, so it can serve as an isolating device in the assembly. Utilization categories are AC-41, AC-43 and AC-44.
8) How many cycles will a TeSys U reversing base last, and how fast can it cycle?
Rated mechanical durability is 15 million cycles, with a maximum operating rate of 3600 cycles per hour. That suits high-cycle duty like jogging conveyors or repetitive machine motions.
9) Can the LU2B12FU be installed at high altitude or stored in an unheated warehouse?
Operating altitude is rated to 2000 m (6561.68 ft) without derating considerations beyond that, and storage ambient air temperature range is -40 to 85 degrees C, so an unheated or hot storage building is not a problem before install.
10) Which exact Square D part number is this reversing power base?
Square D TeSys Ultra reversing power base, manufacturer part number LU2B12FU, UPC 785901202547. It is the 12 A, 3-pole, 110-240 V AC/DC coil standard reversing base in the TeSys U family.
11) Does this Square D base meet RoHS and WEEE requirements for an institutional spec?
It is in scope for European RoHS and in scope for WEEE under product category 5. It is mercury free, ships in recycled cardboard with sustainable packaging and no single-use plastic. China RoHS is listed as out of scope with label 7.
How fast can I get the Square D LU2B12FU 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 LU2B12FU come with a warranty?
Absolutely. The Square D LU2B12FU 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 LU2B12FU?
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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