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Advanced control unit, TeSys Ultra, 3P, 4.5 to 18A, 690VAC, protection & diagnostic, class 10, 24VDC coil

LUCB18BL

Thermal protection adjustment range:

load type:

Thermal overload class:

Protection against overload and short-circuit
Control unit includes electronic components and the current adjustment dial
Modular, plug & play structure helps you to perform quick maintenance
Direct access to detailed information for every motor starter of your installation
Advanced motor management system
Environmental Data
Total lifecycle Carbon footprint
23
Use Better
Packaging made with recycled cardboard
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Recycled cardboard content is minimum 70% (50% in US). Some orders may include non-recycled cardboard until stock runs out.
Yes
Use Again
Recyclability potential, in %
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The calculation of the recyclability potential relies on the scenario "France - parts are shredded" of TR62635 considering all parts in the product and materials recyclability. We recognized that this may not always allow comparison with other competitor offers on the market and are waiting for a common standard to be published end of 2026.
56
Take-back
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Whether the product has been included in a global take-back program. Some products are eligible in some geographies, please verify if it's available in your country.
No
Description
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TeSys U control and diagnostic unit to be inserted in advanced power bases LUB320, LUB380, LUB380 to form a TeSys U starter controller, for 3-phase motor applications up to 7.5kW@400V. It provides full protection to motors with a rated current Ir 4.5-18A (Ir adjustable), overload tripping class 10, short circuit at 13 x Irmax, overcurrent at 14.2 x Ir, phase loss, insulation fault (protection of equipment only). It provides a thermal overload alarm to be used locally using a LUFDA module or remotely using a LULC module, and a test push button for overload simulation. To be used with a 24V DC voltage for the control of the starter (through the control terminals A1/A2 located in the power base). Certified when used in conjunction with a LUB power base (IEC, UL, CSA, CCC, EAC, Marine), Green Premium compliant (RoHS/REACh).
Specifications
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Main
RangeTeSys
Range of productTeSys Ultra
Product nameTeSys Ultra
Device short nameLUCB
Product or component typeAdvanced control unit
Device applicationMotor control
Motor protection
Product specific applicationBasic protection and advanced functions, communication
main function availableProtection against overload and short-circuit
Manual reset
Earth fault protection
Protection against phase failure and phase imbalance
Product compatibilityPower base LUB32
Power base LUB38
Power base LUB320
Power base LUB380
Reversing contactor breaker LU2B32BL
Reversing contactor breaker LU2B38BL
[Ue] rated operational voltage690 V AC
Network frequency40...60 Hz
Load type3-phase motor - cooling: self-cooled
Utilisation categoryAC-44
AC-41
AC-43
Motor power kW7.5 kW at 400...440 V AC 50/60 Hz
9 kW at 500 V AC 50/60 Hz
15 kW at 690 V AC 50/60 Hz
rated motor current adjustment range4.5…18 A
Thermal overload classClass 10 - frequency limit: 40…60 Hz - temperature compensation: -25…70 °C conforming to IEC 60947-6-2
Class 10 - frequency limit: 40…60 Hz - temperature compensation: -25…70 °C conforming to UL 508
Tripping threshold14.2 x Ir +/- 20 %
Phase failure sensitivityYes
[Uc] control circuit voltage24 V DC
Complementary
Control circuit voltage limits20...27 V for DC circuit 24 V in operation
14.5 V for DC circuit 24 V drop-out
Typical current consumption220 mA at 24 V DC I maximum while closing with LUB32
220 mA at 24 V DC I maximum while closing with LUB38
80 mA at 24 V DC I rms sealed with LUB32
80 mA at 24 V DC I rms sealed with LUB38
Heat dissipation3 W for control circuit with LUB32
3 W for control circuit with LUB38
Operating time35 ms opening with LUB32 for control circuit
35 ms opening with LUB38 for control circuit
70 ms closing with LUB32 for control circuit
70 ms closing with LUB38 for control circuit
ResetManual reset
StandardsEN 60947-6-2
IEC 60947-6-2
UL 60947-4-1, with phase barrier
CSA C22.2 No 60947-4-1, with phase barrier
Product certificationsCE
UL
CSA
CCC
EAC
ASEFA
ATEX
Marine
[Ui] rated insulation voltage690 V conforming to IEC 60947-6-2
600 V conforming to UL 60947-4-1
600 V conforming to CSA C22.2 No 60947-4-1
[Uimp] rated impulse withstand voltage6 kV conforming to IEC 60947-6-2
Safe separation of circuit400 V SELV between the control and auxiliary circuits conforming to IEC 60947-1
400 V SELV between the control or auxiliary circuit and the main circuit conforming to IEC 60947-1
Fixing modePlug-in (front face)
Width45 mm
Height66 mm
Depth60 mm
Compatibility codeLUCB
Environment
IP degree of protectionIP20 front panel and wired terminals conforming to IEC 60947-1
IP20 other faces conforming to IEC 60947-1
IP40 front panel outside connection zone conforming to IEC 60947-1
Protective treatmentTH conforming to IEC 60068
Ambient air temperature for operation-25…70 °C
Ambient air temperature for storage-40…85 °C
Operating altitude2000 m
Fire resistance960 °C parts supporting live components conforming to IEC 60695-2-12
650 °C conforming to IEC 60695-2-12
Shock resistance10 gn power poles open conforming to IEC 60068-2-27
15 gn power poles closed conforming to IEC 60068-2-27
Vibration resistance2 gn, 5…300 Hz, power poles open conforming to IEC 60068-2-6
4 gn, 5…300 Hz, power poles closed conforming to IEC 60068-2-6
Resistance to electrostatic discharge8 kV level 3 in open air conforming to IEC 61000-4-2
8 kV level 4 on contact conforming to IEC 61000-4-2
Resistance to radiated fields10 V/m 3 conforming to IEC 61000-4-3
Resistance to fast transients2 kV class 3 serial link conforming to IEC 61000-4-4
4 kV class 4 all circuits except for serial link conforming to IEC 61000-4-4
Immunity to radioelectric fields10 V conforming to IEC 61000-4-6
Immunity to microbreaks3 ms
Immunity to voltage dips70 % / 500 ms conforming to IEC 61000-4-11
Packing Units
Unit Type of Package 1PCE
Number of Units in Package 11
Package 1 Height10.300 cm
Package 1 Width5.300 cm
Package 1 Length8.500 cm
Package 1 Weight124.000 g
Unit Type of Package 2S02
Number of Units in Package 223
Package 2 Height15.000 cm
Package 2 Width30.000 cm
Package 2 Length40.000 cm
Package 2 Weight3.136 kg
Contractual warranty
Warranty18 months
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Schneider Electric aims to achieve Net Zero status by 2050 through supply chain partnerships, lower impact materials, and circularity via our ongoing “Use Better, Use Longer, Use Again” campaign to extend product lifetimes and recyclability.
Environmental footprint
Use Better
Materials and Substances
Use Again
Repack and remanufacture
Documents
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Software and Firmware
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