Schütz,Leistungsschalter,Sensor,Encoder,SPS,Konverter
LUCA05BL is a standard control unit of Schneider’s TeSys U series, suitable for three-phase motors. It features an adjustable rated current of 1.25–5A, a control voltage of 24V DC, and a Class 10 thermal overload rating. Equipped with protection against overload, Kurzschluss, Phasenverlust, phase interruption, and ground fault, it is designed for direct-on-line starting control of motors below 1.5kW (400V).
| Parameter | Wert | Beschreibung |
| Kompatible Serien | TeSys U | Standard-Steuergerät (LUCA-Serie) |
| Nennstrom (Und) | 1.25-5A | Einstellbar; rated continuous current (Iu)=5A |
| Steuerspannung | 24In DC | Operating voltage of the control circuit |
| Thermal Overload Class | Klasse 10 | Entspricht IEC 60947-4-1 |
| Hauptstromkreisspannung | ≤690 V Wechselstrom | Geeignet für Drehstrommotoren |
| Motorleistung (400V) | ≤1,5 kW | Dreiphasig, 50/60Hz |
| Kurzschlussschutz | 65A (augenblicklich) | Nicht verstellbar |
| Schutzfunktionen | Overload/Short Circuit/Phase Loss/Current Unbalance/Ground Fault | Manual reset required |
| Abmessungen (B×H×T) | 45×66×60mm | Standard modular installation |
| Herkunftsort | Frankreich | Original imported product |
Produktpositionierung & Anwendungen
– As a standard control unit of the TeSys U series, it combines with compatible power bases (z.B., LUB05) to form a direct-on-line starter, providing basic control and protection for three-phase motors.
Anwendungsszenarien: Light to medium-load working conditions such as pumps, Fans, Kompressoren, and small conveyor lines, suitable for industries including textile, Papierherstellung, chemical engineering, and food & Getränk.
Differentiation from Series Peers: Unlike LUCB (advanced type with alarm/test functions) and LUCC (communication type), LUCA only provides basic protection with a lower cost.
Auswahl & Ersatz
Compatible Bases: LUB05, LUB05BL, usw. The base must match the rated current of the control unit.
Ersatzreferenzen: Equivalent models from Chint NJR2 series and ABB MS116 series. Jedoch, interface and protection logic differences exist; it is necessary to verify installation dimensions and control circuit parameters.
Installation & Wartungsrichtlinien
- Install via DIN rail or screw mounting; modular plug-and-play design enables quick replacement.
- The control circuit requires an external 24V DC power supply. Set Ir (1.25-5A) on the main circuit according to the motor’s rated current.
- Manual reset is required after a fault. Ground fault protection is only for equipment and does not replace personal safety protection.
- Betriebstemperaturbereich: -25~+60℃. Avoid dusty, feucht, und korrosiven Umgebungen; regularly check wiring and terminal tightness.
Beschaffung & Liefern
Common Channels: Schneider authorized distributors, industrial e-commerce platforms. Referenzpreis: approximately €60–100 (inklusive Mehrwertsteuer). In-stock delivery typically takes 2–5 working days.
Kompatibles Zubehör: Can be paired with LUFDA local alarm module and LULC remote signal module to expand status monitoring functions.
Detailed Comparison Between Schneider TeSys U Series LUCA05BL and LUCB05BL
| Vergleichsdimension | LUCA05BL (Standardtyp) | LUCB05BL (Advanced Type) |
| Kernpositionierung | Basic motor protection & direct-on-line starting control | Verbesserter Schutz + Fehleralarm + test functions |
| Nennstrombereich | 1.25-5A | 1.25-5A |
| Steuerspannung | 24In DC | 24In DC |
| Thermal Overload Class | Klasse 10 (IEC 60947-4-1) | Klasse 10 (IEC 60947-4-1) |
| Kompatible Motorleistung (400V) | ≤1,5 kW | ≤1,5 kW |
| Hauptstromkreisspannung | ≤690 V Wechselstrom | ≤690 V Wechselstrom |
| Grundlegende Schutzfunktionen | Überlast, Kurzschluss, Phasenverlust, aktuelle Unsymmetrie, Erdschluss | Same as LUCA05BL, plus overload pre-alarm function |
| Besondere Merkmale | Manual reset only; no alarm/test functions | 1. Fehleralarmausgang: Relay contact signal, connectable to indicator lights or PLC |
| 2. Manual test function: Simulate faults without power supply to verify protection logic | ||
| 3. Statusanzeige: Multi-color LED distinguishes running/overload/short circuit/phase loss status | ||
| Methode zurücksetzen | Manual reset only | Manueller Reset + external remote reset signal support (accessories required) |
| Modulare Zubehörkompatibilität | Supports basic bases only (z.B., LUB05) | Compatible with LUFDA local alarm module and LULC remote signal module; supports expansion |
| Installationsmethode | DIN rail/screw mounting; Plug-and-Play | Same as LUCA05BL; einheitliche Einbaumaße |
| Anwendungsszenarien | Light/medium-load conditions without remote monitoring needs (z.B., kleine Pumpen, Fans) | Scenarios requiring fault pre-alarm and status monitoring (z.B., automatisierte Produktionslinien, chemical equipment) |
| Kostenreferenz | €60–100 (inklusive Mehrwertsteuer) | €120–180 (inklusive Mehrwertsteuer), approximately twice the price of LUCA05BL |
| Ersatzkompatibilität | Base-compatible with LUCB05BL; direct plug-and-replace | Downward compatible with LUCA05BL replacement; redundant functions but higher cost |
Zusammenfassung der wichtigsten Unterschiede
- Funktionelle Unterschiede: The core advantages of LUCB05BL are overload pre-alarm + Fehleralarm + manual test, which can detect motor overload trends in advance to avoid downtime losses. Im Gegensatz, LUCA05BL only provides post-fault protection with no pre-alarm capability.
- Erweiterungsfähigkeit: LUCB05BL can be connected to external alarm lights, SPS, or remote monitoring modules to adapt to automated systems; LUCA05BL has no expansion interface and only meets basic control needs.
- Kosten & Kosteneffizienz: LUCA05BL is suitable for cost-sensitive scenarios with simple working conditions; LUCB05BL is ideal for industrial scenarios requiring high reliability. Although it has a higher price, it can reduce fault troubleshooting time and maintenance costs.
Auswahlempfehlungen
– If end customers only require “basic motor protection against damage”, prioritize LUCA05BL for higher cost-effectiveness.
– If customers operate in scenarios such as automated factories and production lines that require fault pre-alarm and remote monitoring, recommend LUCB05BL to improve equipment operation rate.
Cross-Brand Selection Comparison Table: Schneider LUCA05BL/LUCB05BL vs. Chint NJR2-5 vs. ABB MS116-5
| Vergleichsdimension | Schneider LUCA05BL | Schneider LUCB05BL | Chint NJR2-5 | ABB MS116-5 |
| Positionierung der Produktserie | TeSys U standard control unit | TeSys U advanced control unit | NJR2 series thermal overload relay | MS116 series motor starter protection circuit breaker |
| Nennstrombereich | 1.25-5A (einstellbar) | 1.25-5A (einstellbar) | 1.6-5A (einstellbar) | 1.6-5A (einstellbar) |
| Steuerspannung | 24In DC | 24In DC | No control circuit (passiv) | No control circuit (passiv) |
| Thermal Overload Class | Klasse 10 | Klasse 10 | Klasse 10 | Klasse 10 |
| Kompatible Motorleistung (400V) | ≤1,5 kW | ≤1,5 kW | ≤1,5 kW | ≤1,5 kW |
| Hauptstromkreisspannung | ≤690 V Wechselstrom | ≤690 V Wechselstrom | ≤660V AC | ≤690 V Wechselstrom |
| Kernschutzfunktionen | Overload/Short Circuit/Phase Loss/Current Unbalance/Ground Fault | Overload+Short Circuit+Phase Loss+Current Unbalance+Ground Fault | Überlast, Phase Interruption, Current Unbalance | Überlast, Kurzschluss, Phasenverlust, Current Unbalance |
| Overload Pre-Alarm, Fault Alarm Output | No short circuit/ground fault protection | No ground fault protection | ||
| Besondere Merkmale | Manueller Reset | Manual/remote reset | Manual/automatic reset option | Knob-type current adjustment |
| Modular plug-and-play | Störungsmeldekontakt | Kompakte Größe, niedrige Kosten | Integrated circuit breaker function | |
| Manual test function | Manual closing/opening operation | |||
| Accessory expansion support | ||||
| Installationsmethode | DIN rail/screw mounting | DIN rail/screw mounting | DIN-Schienenmontage | DIN-Schienenmontage |
| Requires TeSys U base (z.B., LUB05) | Compatible with full range of TeSys U bases | Direct combination with contactors | Integriertes Design, no base required | |
| Anwendungsszenarien | Light-load conditions, cost-sensitive scenarios | Automatisierte Produktionslinien, fault pre-alarm required scenarios | Domestic industrial supporting, low-end equipment supporting | Mid-to-high-end industrial scenarios requiring integrated circuit breaker functions |
| Kleine Pumpen/Lüfter | Chemical/textile equipment | Distribution boxes/pumps & Fans | Production lines/compressors | |
| Kostenreferenz (Inklusive Steuern) | €60–100 | €120–180 | RMB 80–150 | €90–160 |
| Ersatzkompatibilität | Base-compatible with TeSys U | Base-compatible with LUCA05BL | Einfache Verkabelung; cross-brand replacement of international models requires mounting hole adjustment | Integriertes Design; cross-brand replacement requires main circuit wiring matching |
| Cross-brand replacement requires wiring modification | Direct replacement for LUCA05BL |
Key Selection Conclusions
- Chint for Cost Priority: NJR2-5 has the lowest price, suitable for domestic low-end equipment supporting, but lacks short circuit and ground fault protection and needs to be used with additional circuit breakers.
- ABB for Integrated Control: MS116-5 is an integrated protection circuit breaker with built-in closing/opening functions, requiring no base matching, suitable for scenarios with high integration requirements.
- Schneider LUCB for Automated Scenarios: Equipped with alarm and test functions, it can be connected to PLCs for remote monitoring, reducing fault troubleshooting time, ideal for high-end production lines.
- Schneider LUCA for Basic Protection: Balanced functions with a lower price than LUCB and ABB, suitable for overseas small and medium-sized customers without monitoring needs.
Export Adaptation Tips (For Markets Such as Algeria)
– Both Schneider and ABB products are certified by IEC and CE, directly meeting the import certification requirements of African countries such as Algeria.
– Chint NJR2-5 requires additional local access documents such as SASO certification. Some channels can handle the certification on behalf of customers, with a cost increase of approximately 10%–15%.
