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Schneider LC1D38BLDC24V TeSys D Series Schütz with DC Coil
The Schneider LC1D38BLDC24V is a low-consumption DC coil contactor of the TeSys D Series. Featuring a rated current of 38A, 24V low-power DC coil, 3NO+1NO+1NC contact configuration and a compact 45mm width design, it is an ideal choice for industrial automation. Its advantages of energy efficiency, high reliability and flexible installation make it widely applied in motor control, PLC systems, Fans, water pumps and other facilities. For selection, comprehensively consider load type, Steuerspannung, installation space and energy consumption requirements. Routine maintenance is also required to ensure optimal performance and extended service life.
This is a three-pole AC contactor of Schneider TeSys D Series, rated at 38A and equipped with a 24V low-consumption DC coil. It has 3 main NO contacts plus 1 NEIN und 1 NC auxiliary contacts, and is applicable for controlling 18.5kW motors (AC-3, 440V). With a width of 45mm and support for DIN rail mounting, it is typically used in industrial automation, motor control and PLC systems.
- Erklärung des Modellcodes
| Codesegment | Bedeutung | Beschreibung |
| LC1 | Series Prefix | Identifier for Schneider TeSys contactors; LC1 stands for three-pole contactor |
| D | Unterserie | TeSys D-Serie, general-purpose industrial contactor with 45mm width for standard applications |
| 38 | Nennstrom | Rated operational current of main contacts: 38A (AC-3, 440V) |
| B | Spulenspannung | 24V (B=24V, C=36V, E=48V, F=110V, M=220V, P=230V, U=240V, usw.) |
| L | Coil Type | Low consumption coil, power consumption reduced by about 50% compared with standard coils |
| Gleichstrom | Coil Power Supply | Direct current coil, distinguished from AC coils |
| 24V | Spulenspannung | Explicit rated voltage: 24In DC |
| -XXX | Suffix Code | Optional configurations including auxiliary contacts (z.B. 3BL = 3NO+1NO+1NC) and terminal types |
- Main Specifications
| Artikel | Wert | Bemerkungen |
| Marke | Schneider Electric | World-renowned electrical equipment manufacturer |
| Serie | TeSys D (LC1D) | General-purpose industrial contactor with high cost performance |
| Typ | Three-pole AC contactor with low-consumption DC coil | Non-reversing type, for motor start and stop control |
| Hauptkontaktkonfiguration | 3NEIN (3 Normalerweise geöffnet) | Standard design for three-phase circuit control |
| Hilfskontaktkonfiguration | 1NO+1NC (1 Normalerweise geöffnet + 1 Normalerweise geschlossen) | Built-in auxiliary contacts for control circuits |
| Nennstrom | 38A (AC-3, 440V) | Rated current for motor loads |
| Nennbetriebsspannung | ≤690 V Wechselstrom (25~400Hz), ≤300V DC | Maximum voltage of main circuit |
| Spulenspannung | 24In DC | Control circuit voltage; Operating range: 20.4~26,4 V Gleichstrom |
| Spulenstromverbrauch | Pull-in: 18W, Halten: 2.5W | Low-power design for energy saving and less heat generation |
| Nennleistung | 18.5kW (AC-3, 440V, 50Hz) | Maximum power of controllable motor |
| Mechanische Ausdauer | 10,000,000 Operationen | High-reliability construction |
| Elektrische Ausdauer | 1,000,000 Operationen (under rated AC-3 conditions) | Konform mit IEC 60947-4-1 |
| Montagemethode | DIN-Schienenmontage (IN 50022) or screw mounting | Flexible installation for control cabinet layout |
| Breite | 45mm | Standard width to save cabinet space |
| Terminals | Everlink hexagon socket screw terminals | Firm connection with anti-loosening design |
| Schutz vor Eindringen | IP20 (main body) | Suitable for indoor control cabinets |
| Zertifizierungen | IEC 60947-4-1, UL, CSA, CE | Konform mit internationalen Sicherheitsstandards |
| Farbe | Schwarz | Standard industrial color |
| Gewicht | Ca. 420G | Leicht für einfache Installation |
- Markenübergreifende Kompatibilität & Ersatz
| Marke | Äquivalentes Modell | Spezifikationen | Ersatzempfehlung |
| Schneider | LC1D38BD | 38A, 24V DC standard coil, 3NO+1NO+1NC | Standard power version; coil pull-in 28W, holding 4W, niedrigerer Preis |
| Schneider | LC1D38BNE | 38A, 24V AC/DC universal coil, 3NEIN | Universal AC/DC coil, ideal for unstable power supply |
| ABB | A145-30-11 | 38A, 24V DC-Spule, 3NO+1NO+1NC | Similar size and performance, Direkter Ersatz verfügbar |
| Siemens | 3RT2026-1BB40 | 38A, 24V DC-Spule, 3NO+1NO+1NC | German brand with reliable quality, höherer Preis |
| Omron | GMC-38 | 38A, 24V DC-Spule, 3NO+1NO+1NC | Japanese brand with fast response, for precision control |
| CHINT | CJX2-3810Z | 38A, 24V DC-Spule, 3NO+1NO | Inländische Alternative, cost-effective and stable performance |
| Changshu-Schalter | CK3-38 | 38A, 24V DC-Spule, 3NO+1NO+1NC | Bekannte inländische Marke mit hohem Preis-Leistungs-Verhältnis |
- Full Model List of LC1D38 Series
| Modell | Coil Type | Spulenspannung | Hauptkontakte | Hilfskontakte | Merkmale | Bestell-Nr. |
| LC1D38BLDC24V | Low-consumption DC | 24In DC | 3NEIN | 1NO+1NC | Energy-saving design, geeignet für den Langzeitbetrieb | LC1D38BL |
| LC1D38BDDC24V | Standard DC | 24In DC | 3NEIN | 1NO+1NC | Standard power, economical price | LC1D38BD |
| LC1D38B7AC24V | Standard AC | 24V und | 3NEIN | 1NO+1NC | AC coil, for traditional control circuits | LC1D38B7 |
| LC1D38BLAC24V | Low-consumption AC | 24V und | 3NEIN | 1NO+1NC | Low-power AC type, energiesparend | LC1D38BL |
| LC1D383BLDC24V | Low-consumption DC | 24In DC | 3NEIN | 3NO+1NC | Multiple auxiliary contacts, for complex control | LC1D383BL |
| LC1D38BDC24V | Standard DC | 24In DC | 3NEIN | No auxiliary contacts | Grundmodell, for simple control | LC1D38BDC |
| LC1D38KUEDC24V | Universal coil | 24In DC | 3NEIN | 1NO+1NC | Großer Spannungsbereich, adapts to power fluctuation | LC1D38KUE |
| LC1D38BLDC48V | Low-consumption DC | 48In DC | 3NEIN | 1NO+1NC | Dedicated for 48V systems | LC1D38BL |
- Anwendungsumgebung & Auswahlhilfe
Empfohlene Anwendungen
Industrielle Motorsteuerung: Start, stop and forward/reverse control of three-phase asynchronous motors (≤18.5kW)
SPS-Steuerungssysteme: Act as output actuators of PLC to control various loads
Lüfter & Wasserpumpensteuerung: HVAC-Systeme, industrial cooling systems, water treatment equipment
Kompressorsteuerung: Air compressors, refrigeration compressors, usw.
Förderer & Production Lines: Power control for automated production lines
Werkzeugmaschinen: Motor control for CNC machine tools, Fräsmaschinen, grinders and other equipment
Erneuerbare Energie: Auxiliary control for photovoltaic inverters and wind power systems
Not Recommended Applications
High-frequency Start-Stop: Über 10 operations per minute; special contactors are recommended
Flammable & Explosive Areas: No explosion-proof certification, not applicable for chemical, mining and other hazardous sites
Unprotected Outdoor Use: IP20 rating provides limited protection against dust and moisture
Extremely Low Temperature: Ambient temperature below -5℃ may affect coil pull-in performance
High-frequency Switching Devices: Such as electric welders and high-frequency power supplies; thyristors or solid state relays are preferred
Selection Rhythm
TeSys D-Serie, forty-five millimeters wide,
Thirty-eight amperes for loads to abide.
B stands for twenty-four volt supply,
L means low power, energy well applied.
DC for direct, AC for alternating flow,
Three NO main contacts where power will go.
One NO, one NC for control circuit use,
Most common choice for motor crews.
DIN rail mount saves cabinet space,
Used widely in every industrial place.
- Häufige Fehler & Fehlerbehebung
| Fehlerphänomen | Mögliche Ursachen | Schritte zur Fehlerbehebung | Lösungen |
| Schütz zieht nicht an | 1. Low or no control voltage | 1. Measure coil voltage (normal range: 20.4~26,4V) | 1. Stabilize control voltage |
| 2. Durchgebrannte Spule | 2. Spulenwiderstand testen (normal value: ca. 17惟) | 2. Replace with identical contactor | |
| 3. Mechanische Blockierung | 3. Manually toggle the contactor to check flexibility | 3. Remove foreign objects or replace contactor | |
| 4. Open circuit in control loop | 4. Inspect wiring and components of control loop | 4. Repair control circuit | |
| Contactor drops out after pull-in | 1. Unstable control voltage | 1. Measure coil voltage during operation | 1. Install voltage stabilizer |
| 2. Poor coil connection | 2. Check loose coil terminals | 2. Fasten wiring terminals | |
| 3. Voltage drop caused by overloaded load | 3. Detect power voltage fluctuation | 3. Use thicker cables or reduce load | |
| 4. Faulty auxiliary contacts | 4. Inspect contact condition of auxiliary contacts | 4. Replace auxiliary contact module | |
| Überhitzung / arcing on contacts | 1. Load current exceeds rated value | 1. Measure actual load current | 1. Replace contactor with higher rating |
| 2. Schlechte Kontaktleistung | 2. Check oxidation or ablation on contact surfaces | 2. Clean contacts or replace contactor | |
| 3. Frequent start-stop operations | 3. Count start-stop frequency | 3. Optimize control logic to reduce switching times | |
| 4. Zu hohe Umgebungstemperatur | 4. Measure ambient temperature | 4. Add heat dissipation measures | |
| Excessive operating noise | 1. Oil or dust on iron core surface | 1. Clean iron core surface | 1. Wipe and clean iron core |
| 2. Broken shading ring | 2. Check integrity of shading ring | 2. Replace contactor | |
| 3. Loose installation | 3. Befestigungsschrauben festziehen | 3. Fasten all fixing screws | |
| 4. Low supply voltage | 4. Measure coil voltage | 4. Stabilize power supply voltage | |
| Overheated coil | 1. Überspannung | 1. Check if coil voltage exceeds 26.4V | 1. Lower control voltage |
| 2. Coil aging | 2. Check coil for discoloration | 2. Replace contactor | |
| 3. Hohe Umgebungstemperatur | 3. Measure ambient temperature | 3. Verbessern Sie die Wärmeableitung | |
| 4. Continuous energization | 4. Verify long-term energization requirements | 4. Adopt pulse control mode |
- Industrial Application Cases
Fall 1: Fan Control Renovation in Textile Factory
Traditional contactors in a textile factory suffered frequent burnout, coil overheating and high power consumption. The original AC standard-power contactors controlled 3 sets of 15kW fans.
Lösung: Replaced with Schneider LC1D38BLDC24V contactors featuring low-consumption DC coils, combined with PLC for soft start and variable frequency speed regulation.
Ergebnis: Coil temperature decreased by 25%, power consumption cut by 50%, service life extended to 5 Jahre. Annual electricity cost saved about 8,000 RMB and failure rate reduced by 90%.
Fall 2: Motor Control for Automated Production Line
Multiple 38A motors were used on an auto parts production line. Low-quality generic contactors caused frequent line shutdowns due to poor reliability.
Lösung: Fully replaced with LC1D38BLDC24V contactors to unify control standards, and matched with Schneider PLC for centralized control and fault diagnosis.
Ergebnis: Line downtime reduced by 85%, Wartungskosten um reduziert 70% and production efficiency improved by 15%. The low-power design lowered cabinet temperature and prolonged service life of other electrical components.
Fall 3: Air Conditioning Control in Data Center
Multiple 18.5kW compressors were equipped in a large data center air conditioning system. The original AC coil contactors often failed to pull in under UPS power supply mode.
Lösung: Switched to LC1D38BLDC24V DC coil contactors which adapt to DC output of UPS. The low-power design also reduced UPS load.
Ergebnis: Stable pull-in performance under UPS mode with zero faults. UPS load decreased by 30%, battery service life extended and maintenance frequency of air conditioning system reduced.
