LUCA1XFU TeSys U Standard Control Unit Schneider Electric
The Schneider Electric LUCA1XFU is a TeSys U standard control unit engineered to plug directly into TeSys U power bases (such as LUB12 or LUB32) to deliver comprehensive motor control and protection. Designed for low-power 3-phase electric motors, it features an adjustable thermal setting range of 0.35 to 1.4 A. The unit combines Class 10 thermal-magnetic overload protection, phase-failure detection, and magnetic short-circuit protection into a compact modular housing. Operating on a universal coil voltage of 110–240 V AC or 110–220 V DC, it provides an efficient, space-saving solution for direct-on-line (DOL) and reversing starter applications in industrial automation environments.
Specification | Parameter / Value |
|---|---|
Manufacturer | Schneider Electric |
Range / Series | TeSys Ultra / TeSys U (LUCA Series) |
Part Number | LUCA1XFU |
Product Type | Standard Solid-State Control Unit |
Thermal Protection Range | 0.35 to 1.4 A (Adjustable) |
Control Circuit Voltage (Coil) | 110...240 V AC / 110...220 V DC |
Thermal Overload Class | Class 10 (per IEC 60947-6-2) |
Motor Power Ratings (kW) | 0.25 kW at 400...440 V AC / 0.37 kW at 500 V AC / 0.55 kW at 690 V AC |
Protection Functions | Thermal overload, short-circuit, earth fault, phase failure & phase unbalance |
Magnetic Tripping Threshold | 14.2 x Ir ± 20% |
Reset Mode | Manual reset |
Mounting Compatibility | Front plug-in mounting to TeSys U Power Base (LUB12, LUB32, LUB38) |
Operating Temperature | -25°C to +70°C (-13°F to 158°F) |
Degree of Protection | IP20 / IP40 front panel |

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- Started from: Jul 10, 2025



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