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Schneider Electric LUCB05B

Schneider Electric LUCB05B TeSys Ultra Control Unit, AC-43/4

MPNLUCB05B
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Schneider Electric TeSys Ultra, Advanced control unit, LUCB05B, Manual reset, Plug-in front face, 24 V AC control circuit, AC-43/44/41, 1.5 kW at 400 V, IP20 front face.

$57.15Ref. price · indicative, final on quote
Schneider Electric LUCB05B datasheet (PDF)
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MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

LUCB05B key specifications
ParameterValue
Load type3-phase motor self-cooled
Range of productTeSys Ultra
Product or component typeAdvanced control unit
Immunity to voltage dips70 % / 500 ms IEC 61000-4-11
Coil voltage24 V AC
Voltage690 V IEC 60947-6-2 600 V UL 60947-4-1 600 V CSA C22.2 No 60947-4-1
Control circuit voltage limits20...26.5 V AC 24 V in operation 14.5 V AC 24 V drop-out
[Ue] rated operational voltage690 V AC
[Uimp] rated impulse withstand voltage6 kV IEC 60947-6-2
Typical current consumption140 mA 24 V AC I maximum while closing with LUB12 220 mA 24 V AC I maximum while closing with LUB32 220 mA 24 V AC I maximum while closing with LUB38 70 mA 24 V AC I rms sealed with LUB12 90 mA 24 V AC I rms sealed with LUB32 90 mA 24 V AC I rms sealed with LUB38
Rated motor current adjustment range1.25...5 A
Motor power1.5 kW 400...440 V AC 50/60 Hz 2.2 kW 500 V AC 50/60 Hz 3 kW 690 V AC 50/60 Hz

All specifications

LUCB05B additional specifications
ParameterValue
Network frequency40...60 Hz
Phase failure sensitivityYes
Utilisation categoryAC-43 AC-44 AC-41
IP degree of protectionIP20 front panel and wired terminals IEC 60947-1 IP20 other faces IEC 60947-1 IP40 front panel outside connection zone IEC 60947-1
Shock resistance10 gn power poles open IEC 60068-2-27 15 gn power poles closed IEC 60068-2-27
Operating altitude6561.68 ft (2000 m)
Vibration resistance2 gn 5...300 Hz power poles open IEC 60068-2-6 4 gn 5...300 Hz power poles closed IEC 60068-2-6
Non-dissipating shock wave1 kV serial mode IEC 60947-6-2 2 kV common mode IEC 60947-6-2
Depth2.4 in (60 mm)
Width1.8 in (45 mm)
Height2.6 in (66 mm)
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
RangeTeSys
ResetManual reset
CategoryUS10I1122397
Fixing modePlug-in (front face)
Operating time35 ms opening with LUB12 control circuit 35 ms opening with LUB32 control circuit 35 ms opening with LUB38 control circuit 70 ms closing with LUB12 control circuit 70 ms closing with LUB32 control circuit 70 ms closing with LUB38 control circuit
Fire resistance1760 °F (960 °C) parts supporting live components IEC 60695-2-12 1202 °F (650 °C) IEC 60695-2-12
Heat dissipation2 W control circuit with LUB12 3 W control circuit with LUB32 3 W control circuit with LUB38
Device short nameLUCB
Compatibility codeLUCB
Device applicationMotor control Motor protection
Tripping threshold14.2 x Ir +/- 20 %
Protective treatmentTH IEC 60068
Thermal overload classClass 10 40...60 Hz -13...158 °F (-25...70 °C) IEC 60947-6-2 Class 10 40...60 Hz -13...158 °F (-25...70 °C) UL 508
Immunity to microbreaks3 ms
Main function availableEarth fault protection Protection against phase failure and phase imbalance Manual reset Protection against overload and short-circuit
Safe separation of circuit400 V SELV between the control and auxiliary circuits IEC 60947-1 400 V SELV between the control or auxiliary circuit and the main circuit IEC 60947-1
Product specific applicationBasic protection and advanced functions, communication
Resistance to fast transients2 kV 3 serial link IEC 61000-4-4 4 kV 4 all circuits except for serial link IEC 61000-4-4
Resistance to radiated fields9.1 V/m (10 V/m) 3 IEC 61000-4-3
Immunity to radioelectric fields10 V IEC 61000-4-6
Ambient air temperature for storage-40...185 °F (-40...85 °C)
Ambient air temperature for operation-13...158 °F (-25...70 °C)
Resistance to electrostatic discharge8 kV 3 in open air IEC 61000-4-2 8 kV 4 on contact IEC 61000-4-2

Product details

The Schneider Electric TeSys Ultra LUCB05B is an advanced control unit for protecting and controlling 3-phase self-cooled motors, rated for utilization categories AC-41, AC-43, and AC-44. It integrates overload, short-circuit, earth fault, and phase failure protection in a single plug-in package with manual reset.

Motor power: 1.5 kW at 400 V, 2.2 kW at 500 V, 3 kW at 690 V AC; utilisation categories AC-43, AC-44, AC-41; thermal overload Class 10; heat dissipation 2–3 W. Control circuit voltage is fixed at 24 V AC; inrush current peaks at 220 mA when closing, dropping to 90 mA sealed. The control circuit is safely isolated from the main circuit at 400 V SELV. Minimum operating time is 35 ms opening, 70 ms closing — fast enough to protect motors under short-circuit conditions when paired with a TeSys Ultra circuit breaker or contactor.

The unit plugs into the TeSys Ultra base; front-face access means no rear wiring. Dimensions: 2.4 in (60 mm) deep, 1.8 in (45 mm) wide, 2.6 in (66 mm) high — occupies roughly a single contactor footprint. Rated IP20 on the front panel and wired terminals, IP40 front panel outside connection zone. Vibration resistance is 2 gn open poles, 4 gn closed; shock 10 gn open, 15 gn closed — suitable for machinery with moderate vibration. Compliance covers IEC 60947-6-2 and UL 60947-4-1 with phase barrier.

Frequently asked questions

What is the depth of LUCB05B?

The depth is 2.4 in (60 mm).

What are the key compliance standards for LUCB05B?

The unit complies with IEC 60947-6-2, UL 60947-4-1 (with phase barrier), and CSA C22.2 No 60947-4-1 (with phase barrier).

What is the motor power rating of LUCB05B?

Motor power is 1.5 kW at 400 V AC, 2.2 kW at 500 V AC, and 3 kW at 690 V AC (50/60 Hz).

MPN
LUCB05B