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Schneider Electric LUCB32ES

LUCB32ES TeSys Ultra Control Unit, 48 V AC/DC

MPNLUCB32ES
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TeSys Ultra LUCB32ES advanced control unit, 48 V AC/DC, for 3-phase motor protection, manual reset, plug-in mount.

$129.62 – $162.59Ref. price · indicative, final on quote
Schneider Electric LUCB32ES 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

LUCB32ES 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 voltage48 V AC 48...72 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 limits38.5...72 V AC 48 V in operation 38.5...93 V DC 48...72 V in operation 29 V AC 48 V drop-out 29 V DC 48...72 V drop-out
[Ue] rated operational voltage690 V AC
[Uimp] rated impulse withstand voltage6 kV IEC 60947-6-2
Typical current consumption280 mA 48 V AC I maximum while closing with LUB32 280 mA 48 V AC I maximum while closing with LUB38 280 mA 48...72 V DC I maximum while closing with LUB32 280 mA 48...72 V DC I maximum while closing with LUB38 45 mA 48 V AC I rms sealed with LUB32 45 mA 48 V AC I rms sealed with LUB38 45 mA 48...72 V DC I rms sealed with LUB32 45 mA 48...72 V DC I rms sealed with LUB38
Rated motor current adjustment range8...32 A
Motor power15 kW 400...440 V AC 50/60 Hz 15 kW 500 V AC 50/60 Hz 18.5 kW 690 V AC 50/60 Hz

All specifications

LUCB32ES 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 LUB32 control circuit 35 ms opening with LUB38 control circuit 60 ms closing with LUB32 control circuit 60 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 dissipation3 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 availableProtection against overload and short-circuit Earth fault protection Protection against phase failure and phase imbalance Manual reset
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

LUCB32ES from the TeSys Ultra range is an advanced control unit for motor overload, short-circuit, phase failure, and earth fault protection. It runs on 48 V AC or 48–72 V DC control voltage and triggers at 14.2 x Ir for fast fault clearing. Mounts plug-in (front face) with IP20 on the front panel, sized 2.4 x 1.8 x 2.6 in. Manual reset style — you trip it, you walk over and push the button.

Rated for AC-44, AC-43, AC-41 utilization categories. Thermal overload class 10, immunity to voltage dips 70% / 500 ms, resistance to fast transients 4 kV, control circuit draws 280 mA peak, 45 mA sealed.

Frequently asked questions

What are the key dimensions?

Depth 2.4 in (60 mm), width 1.8 in (45 mm), height 2.6 in (66 mm).

What compliance standards does it meet?

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

What is the tripping threshold?

14.2 x Ir +/- 20%.

MPN
LUCB32ES