IEC 60947-4-1 Standards for Contactors and Motor Starters Explained
Master AC-3 rating selection under IEC 60947-4-1 for contactors and motor starters, including utilization categories and coordination types. Shop at Stoklink.
- Part number
- LUCA38BL
- Model no
- LUCA
- UL
- CSA
- CE
- CCC
- EAC
TeSys UltraSchneider Electric LUCA38BL TeSys U Standard Control Unit 9.5-38 A 24 V DC Motor Starter Module
TeSys U standard control unit, 9.5-38 A adjustable, Class 10, 24 V DC coil
Description
About the LUCA
About the LUCA
The Schneider Electric LUCA38BL is a TeSys U standard control unit providing adjustable thermal-magnetic motor protection from 9.5 to 38 A. Plugged into a LUB38 power base, it forms a complete starter-controller with Class 10 overload tripping, phase-failure sensing, and earth-fault detection for 3-phase motors up to 18.5 kW at 400 V, controlled from a 24 V DC supply.
Certifications & Standards
- CE
- UL
- CSA
- IEC 60947-6-2
- UL 60947-4-1
- CSA C22.2 No 60947-4-1
Selection Notes
The LUCA38BL is the only control unit covering 32-38 A, so it fits exclusively on the LUB38 power base rather than the LUB12/LUB32. Remember that the LUB38 base itself carries a lower 25 kA breaking capacity at 440 V than the smaller bases, so the extra current headroom comes with reduced short-circuit margin. It currently ships only with a 24 V DC coil; no 24 V AC or 110-240 V equivalent is listed.
Specification
Full specification
Main 19
| Range | TeSys |
|---|---|
| Range of product | TeSys Ultra |
| Product name | TeSys Ultra |
| Device short name | LUCA |
| Product or component type | Standard control unit |
| Device application | Motor control, Motor protection |
| Product specific application | Basic protection requirements for motor starters: overload and short-circuit |
| main function available | Protection against phase failure and phase imbalance, Protection against overload and short-circuit, Earth fault protection, Manual reset |
| Product compatibility | Power base LUB38, Power base LUB380, Reversing contactor breaker LU2B38BL |
| [Ue] rated operational voltage | 690 V AC |
| Network frequency | 40...60 Hz |
| Load type | 3-phase motor - cooling: self-cooled |
| Utilisation category | AC-43 |
| Motor power kW | 18.5 kW at 400...440 V AC 50/60 Hz, 18.5 kW at 500 V AC 50/60 Hz, 22 kW at 690 V AC 50/60 Hz |
| rated motor current adjustment range | 9.5…38 A |
| Thermal overload class | Class 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 threshold | 14.2 x Ir +/- 20 % |
| Phase failure sensitivity | Yes |
| [Uc] control circuit voltage | 24 V DC |
Complementary 15
| Control circuit voltage limits | 20...27 V for DC circuit 24 V in operation, 14.5 V for DC circuit 24 V drop-out |
|---|---|
| Typical current consumption | 220 mA at 24 V DC I maximum while closing with LUB38, 80 mA at 24 V DC I rms sealed with LUB38 |
| Heat dissipation | 3 W for control circuit with LUB38 |
| Operating time | 35 ms opening with LUB38 for control circuit, 70 ms closing with LUB38 for control circuit |
| Standards | EN 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 certifications | CE, UL, CSA, CCC (pending), EAC (pending) |
| [Ui] rated insulation voltage | 690 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 voltage | 6 kV conforming to IEC 60947-6-2 |
| Safe separation of circuit | 400 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 mode | Plug-in (front face) |
| Width | 45 mm |
| Height | 66 mm |
| Depth | 60 mm |
| Net weight | 0.135 kg |
| Compatibility code | LUCA |
Environment 14
| IP degree of protection | IP20 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 treatment | TH conforming to IEC 60068 |
| Ambient air temperature for operation | -25…70 °C |
| Ambient air temperature for storage | -40…85 °C |
| Operating altitude | 2000 m |
| Fire resistance | 960 °C parts supporting live components conforming to IEC 60695-2-12, 650 °C conforming to IEC 60695-2-12 |
| Shock resistance | 10 gn power poles open conforming to IEC 60068-2-27, 15 gn power poles closed conforming to IEC 60068-2-27 |
| Vibration resistance | 2 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 discharge | 8 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 fields | 10 V/m 3 conforming to IEC 61000-4-3 |
| Resistance to fast transients | 2 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 fields | 10 V conforming to IEC 61000-4-6 |
| Immunity to microbreaks | 3 ms |
| Immunity to voltage dips | 70 % / 500 ms conforming to IEC 61000-4-11 |
Show all 66 specifications ↓ Show less ↑18 more values in Identification, Contractual warranty, Logistics.
Identification 7
| Part number | LUCA38BL |
|---|---|
| Type designation | LUCA |
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
Contractual warranty 1
| Warranty (in months) | 18 |
|---|
Logistics 10
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 5.200 cm |
| Package 1 Width | 8.300 cm |
| Package 1 Length | 8.800 cm |
| Package 1 Weight | 124.000 g |
| Shipping weight | 0.135 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
Documents
Documents for LUCA38BL
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- UL
- CSA
- CE
- CCC
- EAC
- EN 60947-6-2
- IEC 60947-6-2
- UL 60947-4-1
- with phase barrier
Quick answers
Questions about the LUCA
What is the rated current of LUCA?
The rated current of LUCA is 38 A.
What is the HS code of LUCA for customs?
The tariff (HS) code on file for LUCA is 853650.
Where does LUCA ship from, and how fast?
LUCA ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Guides
Guides for motor starters
NEMA vs IEC Contactor Standards: Key Differences and Size Comparison
Compare AC3 rating IEC contactors versus NEMA size codes, with cross-reference tables, derating formulas, and selection tips for engineers. Shop at Stoklink.
How to Size a Contactor for a 3-Phase Motor: Engineer Guide
Size a contactor for a 3-phase motor using IEC 60947-4-1 methodology, AC-3 vs AC-4 categories, NEMA equivalents, and Type 2 coordination. Shop at Stoklink.
Reviews
Customer reviews
Series
Schneider Electric TeSys Ultra
- Brand
- Schneider Electric
- Series
- TeSys Ultra
