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Schneider Electric LUCBX6FU

Schneider LUCBX6FU TeSys Ultra Control Unit, Manual Reset

MPNLUCBX6FU
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Schneider Electric TeSys Ultra Advanced Control Unit, LUCBX6FU, manual reset, 0.09 kW motor protection, plug-in mount, 2.4 in (60 mm) depth.

$52.07Ref. price · indicative, final on quote
Schneider Electric LUCBX6FU datasheet (PDF)
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

LUCBX6FU 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 voltage110...240 V AC 110...220 V DC
Voltage690 V IEC 60947-6-2 600 V UL 60947-4-1 600 V CSA C22.2 No 60947-4-1
Control circuit voltage limits88...264 V AC 110...240 V in operation 88...242 V DC 110...220 V in operation 55 V AC 110...240 V drop-out 55 V DC 110...220 V drop-out
[Ue] rated operational voltage690 V AC
[Uimp] rated impulse withstand voltage6 kV IEC 60947-6-2
Typical current consumption280 mA 110...240 V AC I maximum while closing with LUB12 280 mA 110...240 V AC I maximum while closing with LUB32 280 mA 110...240 V AC I maximum while closing with LUB38 280 mA 110...220 V DC I maximum while closing with LUB12 280 mA 110...220 V DC I maximum while closing with LUB32 280 mA 110...220 V DC I maximum while closing with LUB38 35 mA 110...240 V AC I rms sealed with LUB12 25 mA 110...240 V AC I rms sealed with LUB32 25 mA 110...240 V AC I rms sealed with LUB38 35 mA 110...220 V DC I rms sealed with LUB12 25 mA 110...220 V DC I rms sealed with LUB32 25 mA 110...220 V DC I rms sealed with LUB38
Rated motor current adjustment range0.15...0.6 A
Motor power0.09 kW 400...440 V AC 50/60 Hz

All specifications

LUCBX6FU additional specifications
ParameterValue
Network frequency40...60 Hz
Phase failure sensitivityYes
Utilisation categoryAC-44 AC-43 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 50 ms closing with LUB12 control circuit 50 ms closing with LUB32 control circuit 50 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 availableManual reset Protection against phase failure and phase imbalance Protection against overload and short-circuit Earth fault protection
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 LUCBX6FU is a TeSys Ultra advanced control unit from Schneider Electric – a manual-reset device for 3-phase motor protection. It covers overload, short-circuit, phase imbalance, phase failure, and earth faults in one package. Rated motor power is 0.09 kW at 400...440 V AC 50/60 Hz, so it sits at the small end of the TeSys Ultra line. If you're sourcing for a light-duty motor, this is the control unit that fits.

Key ratings – the ones that matter for fit

Tripping threshold: 14.2 x Ir ±20% – a fixed trip curve, not adjustable. That's for short-circuit protection. Thermal overload class 10, rated for Class 10 protection across -25°C to 70°C per IEC and UL 508. Control voltage is 110...240 V AC or 110...220 V DC, drawing 280 mA max during closing and 35 mA sealed. Dimensions: 2.4 in deep × 1.8 in wide × 2.6 in tall – a small plug-in unit on the front face. IP20 front panel and wired terminals; IP40 front panel outside connection zone.

Frequently asked questions

What are the key dimensions for panel layout?

The unit is 2.4 in (60 mm) deep, 1.8 in (45 mm) wide, and 2.6 in (66 mm) tall. It mounts via plug-in on the front face.

What protection functions does it include?

Manual reset, protection against overload, short-circuit, phase failure, phase imbalance, and earth fault. It also has phase failure sensitivity and a tripping threshold of 14.2 x Ir ±20%.

MPN
LUCBX6FU