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.
The Schneider Electric LUCL32FU is a TeSys U magnetic control unit for LUB32 or LUB38 power bases, covering 3-phase motors up to 15 kW at 400 V. The dial-adjustable short-circuit setting spans 8 to 32 A, tripping at 14.2 x Ir, and the control circuit runs on a wide 110-240 V AC or 110-220 V DC supply.
At 8-32 A this is the highest current LUCL unit built on the LUB32/LUB38 base pair, suited to the largest motors those bases support; the 38BL variant below extends further but only on LUB38. The universal 110-240 V AC / 110-220 V DC control input removes the need to match coil voltage to local control supply, which simplifies spares stocking across sites with mixed control voltages. Short-circuit protection only — the connected drive or soft starter must provide thermal overload coverage.
| Range | TeSys |
|---|---|
| Range of product | TeSys Ultra |
| Product name | TeSys Ultra |
| Device short name | LUCL |
| Product or component type | Magnetic control unit |
| Device application | Motor control, Motor protection |
| Product specific application | Protection of variable speed drive or soft startsoft stop unit |
| main function available | Manual reset, Short-circuit protection |
| Product compatibility | Power base LUB32, Power base LUB38, Power base LUB320, Power base LUB380, Reversing contactor breaker LU2B32FU, Reversing contactor breaker LU2B38FU |
| [Ue] rated operational voltage | 690 V AC |
| Network frequency | 40...60 Hz |
| Load type | 3-phase motor - cooling: self-cooled |
| Utilisation category | AC-43, AC-41, AC-44 |
| Motor power kW | 15 kW at 400...440 V AC 50/60 Hz, 15 kW at 500 V AC 50/60 Hz, 18.5 kW at 690 V AC 50/60 Hz |
| rated motor current adjustment range | 8…32 A |
| Tripping threshold | 14.2 x Ir +/- 20 % |
| [Uc] control circuit voltage | 110...240 V AC, 110...220 V DC |
| Control circuit voltage limits | 88...264 V for AC circuit 110...240 V in operation, 88...242 V for DC circuit 110...220 V in operation, 55 V for AC circuit 110...240 V drop-out, 55 V for DC circuit 110...220 V drop-out |
|---|---|
| Typical current consumption | 280 mA at 110...240 V AC I maximum while closing with LUB32, 280 mA at 110...240 V AC I maximum while closing with LUB38, 280 mA at 110...220 V DC I maximum while closing with LUB32, 280 mA at 110...220 V DC I maximum while closing with LUB38, 25 mA at 110...240 V AC I rms sealed with LUB32, 25 mA at 110...240 V AC I rms sealed with LUB38, 25 mA at 110...220 V DC I rms sealed with LUB32, 25 mA at 110...220 V DC I rms sealed with LUB38 |
| Heat dissipation | 3 W for control circuit with LUB32, 3 W for control circuit with LUB38 |
| Operating time | 35 ms opening with LUB32 for control circuit, 35 ms opening with LUB38 for control circuit, 50 ms closing with LUB32 for control circuit, 50 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, EAC, ATEX |
| [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 | LUCL |
| 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 |
| Non-dissipating shock wave | 1 kV serial mode conforming to IEC 60947-6-2, 2 kV common mode conforming to IEC 60947-6-2 |
| 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 |
| Part number | LUCL32FU |
|---|---|
| Type designation | LUCL |
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| Warranty (in months) | 18 |
|---|
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 10.300 cm |
| Package 1 Width | 5.300 cm |
| Package 1 Length | 8.000 cm |
| Package 1 Weight | 134.000 g |
| Unit Type of Package 2 | S02 |
| Number of Units in Package 2 | 23 |
| Package 2 Height | 15.000 cm |
| Package 2 Width | 30.000 cm |
| Package 2 Length | 40.000 cm |
| Package 2 Weight | 3.370 kg |
| Shipping weight | 0.135 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of LUCL is 32 A.
The rated operational voltage of LUCL is 110–240 – 110–220 V DC.
The tariff (HS) code on file for LUCL is 853650.
LUCL ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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