Contacteur,disjoncteur,onduleur solaire,compteur électrique,batteries solaires
Schneider LC1D38BLDC24V TeSys D Series Contacteur 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, les fans, water pumps and other facilities. Pour la sélection, comprehensively consider load type, tension de commande, 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 NO and 1 Contacts auxiliaires NF, 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.
- Explication du code modèle
| Segment de code | Signification | Description |
| LC1 | Series Prefix | Identifier for Schneider TeSys contactors; LC1 stands for three-pole contactor |
| D | Sous-série | Série TeSys D, general-purpose industrial contactor with 45mm width for standard applications |
| 38 | Courant nominal | Rated operational current of main contacts: 38UN (AC-3, 440V) |
| B | Tension de bobine | 24V (B=24V, C=36V, E=48V, F=110V, M=220V, P=230V, U=240V, etc.) |
| L | Type de bobine | Low consumption coil, power consumption reduced by about 50% compared with standard coils |
| CC | Coil Power Supply | Direct current coil, distinguished from AC coils |
| 24V | Tension de bobine | Explicit rated voltage: 24À DC |
| -XXX | Suffix Code | Optional configurations including auxiliary contacts (par exemple. 3BL = 3NO+1NO+1NC) and terminal types |
- Main Specifications
| Article | Valeur | Remarques |
| Marque | Schneider Électrique | World-renowned electrical equipment manufacturer |
| Série | TeSys D (LC1D) | General-purpose industrial contactor with high cost performance |
| Taper | Three-pole AC contactor with low-consumption DC coil | Non-reversing type, for motor start and stop control |
| Configuration des contacts principaux | 3NON (3 Normalement ouvert) | Standard design for three-phase circuit control |
| Configuration des contacts auxiliaires | 1NON+1NC (1 Normalement ouvert + 1 Normalement fermé) | Built-in auxiliary contacts for control circuits |
| Courant nominal | 38UN (AC-3, 440V) | Rated current for motor loads |
| Tension de fonctionnement nominale | ≤690 V CA (25~400Hz), ≤300V DC | Maximum voltage of main circuit |
| Tension de bobine | 24À DC | Tension du circuit de commande; Operating range: 20.4~26.4V DC |
| Consommation électrique de la bobine | Pull-in: 18W, Holding: 2.5W | Low-power design for energy saving and less heat generation |
| Puissance nominale | 18.5kW (AC-3, 440V, 50Hz) | Maximum power of controllable motor |
| Endurance mécanique | 10,000,000 opérations | High-reliability construction |
| Endurance électrique | 1,000,000 opérations (under rated AC-3 conditions) | Conforme à la CEI 60947-4-1 |
| Méthode de montage | Montage sur rail DIN (DANS 50022) or screw mounting | Flexible installation for control cabinet layout |
| Largeur | 45mm | Standard width to save cabinet space |
| Terminaux | Everlink hexagon socket screw terminals | Firm connection with anti-loosening design |
| Protection contre la pénétration | IP20 (main body) | Suitable for indoor control cabinets |
| Certifications | CEI 60947-4-1, UL, ASC, CE | Conforme aux normes de sécurité internationales |
| Couleur | Noir | Couleur industrielle standard |
| Poids | Environ. 420g | Léger pour une installation facile |
- Compatibilité entre marques & Remplacement
| Marque | Modèle équivalent | Caractéristiques | Recommandation de remplacement |
| Schneider | LC1D38BD | 38UN, 24V DC standard coil, 3NO+1NO+1NC | Standard power version; coil pull-in 28W, holding 4W, Prix inférieur |
| Schneider | LC1D38BNE | 38UN, 24V AC/DC universal coil, 3NON | Universal AC/DC coil, ideal for unstable power supply |
| ABB | A145-30-11 | 38UN, 24Bobine V CC, 3NO+1NO+1NC | Similar size and performance, remplacement direct disponible |
| Siemens | 3RT2026-1BB40 | 38UN, 24Bobine V CC, 3NO+1NO+1NC | German brand with reliable quality, prix plus élevé |
| Omron | GMC-38 | 38UN, 24Bobine V CC, 3NO+1NO+1NC | Japanese brand with fast response, for precision control |
| CHINT | CJX2-3810Z | 38UN, 24Bobine V CC, 3NO+1NO | Alternative nationale, cost-effective and stable performance |
| Commutateur Changshu | CK3-38 | 38UN, 24Bobine V CC, 3NO+1NO+1NC | Marque nationale bien connue avec des performances de coût élevées |
- Full Model List of LC1D38 Series
| Modèle | Type de bobine | Tension de bobine | Contacts principaux | Contacts auxiliaires | Caractéristiques | Numéro de commande. |
| LC1D38BLDC24V | Low-consumption DC | 24À DC | 3NON | 1NON+1NC | Energy-saving design, suitable for long-term operation | LC1D38BL |
| LC1D38BDDC24V | Standard DC | 24À DC | 3NON | 1NON+1NC | Standard power, prix économique | LC1D38BD |
| LC1D38B7AC24V | Standard AC | 24V et | 3NON | 1NON+1NC | AC coil, for traditional control circuits | LC1D38B7 |
| LC1D38BLAC24V | Low-consumption AC | 24V et | 3NON | 1NON+1NC | Low-power AC type, économie d'énergie | LC1D38BL |
| LC1D383BLDC24V | Low-consumption DC | 24À DC | 3NON | 3NON+1NC | Multiple auxiliary contacts, for complex control | LC1D383BL |
| LC1D38BDC24V | Standard DC | 24À DC | 3NON | Pas de contacts auxiliaires | Modèle de base, for simple control | LC1D38BDC |
| LC1D38KUEDC24V | Universal coil | 24À DC | 3NON | 1NON+1NC | Large plage de tension, adapts to power fluctuation | LC1D38KUE |
| LC1D38BLDC48V | Low-consumption DC | 48À DC | 3NON | 1NON+1NC | Dedicated for 48V systems | LC1D38BL |
- Environnement d'application & Guide de sélection
Applications recommandées
Contrôle de moteur industriel: Commencer, stop and forward/reverse control of three-phase asynchronous motors (≤18.5kW)
PLC Control Systems: Act as output actuators of PLC to control various loads
Ventilateur & Water Pump Control: Systèmes CVC, industrial cooling systems, water treatment equipment
Compressor Control: Compresseurs d'air, compresseurs de réfrigération, etc..
Convoyeurs & Production Lines: Power control for automated production lines
Machines-outils: Motor control for CNC machine tools, fraiseuses, grinders and other equipment
Renewable Energy: Auxiliary control for photovoltaic inverters and wind power systems
Not Recommended Applications
High-frequency Start-Stop: Sur 10 operations per minute; special contactors are recommended
Inflammable & 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
Série TeSys D, 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.
- Défauts courants & Dépannage
| Phénomène de défaut | Causes possibles | Étapes de dépannage | Solutions |
| Le contacteur ne parvient pas à s'enclencher | 1. Low or no control voltage | 1. Measure coil voltage (normal range: 20.4~26.4V) | 1. Stabilize control voltage |
| 2. Bobine brûlée | 2. Tester la résistance de la bobine (normal value: environ. 17惟) | 2. Replace with identical contactor | |
| 3. Bourrage mécanique | 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 | |
| Surchauffe / arcing on contacts | 1. Load current exceeds rated value | 1. Measure actual load current | 1. Replace contactor with higher rating |
| 2. Poor contact performance | 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. Température ambiante trop élevée | 4. Mesurer la température ambiante | 4. Ajouter des mesures de dissipation thermique | |
| Excessive operating noise | 1. Oil or dust on iron core surface | 1. Clean iron core surface | 1. Wipe and clean iron core |
| 2. Anneau d'ombrage cassé | 2. Check integrity of shading ring | 2. Replace contactor | |
| 3. Installation lâche | 3. Tighten mounting screws | 3. Fasten all fixing screws | |
| 4. Faible tension d'alimentation | 4. Measure coil voltage | 4. Stabilize power supply voltage | |
| Overheated coil | 1. Surtension | 1. Check if coil voltage exceeds 26.4V | 1. Lower control voltage |
| 2. Coil aging | 2. Check coil for discoloration | 2. Replace contactor | |
| 3. Température ambiante élevée | 3. Mesurer la température ambiante | 3. Améliorer la dissipation thermique | |
| 4. Continuous energization | 4. Verify long-term energization requirements | 4. Adopt pulse control mode |
- Industrial Application Cases
Cas 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.
Solution: Replaced with Schneider LC1D38BLDC24V contactors featuring low-consumption DC coils, combined with PLC for soft start and variable frequency speed regulation.
Résultat: Coil temperature decreased by 25%, power consumption cut by 50%, service life extended to 5 années. Annual electricity cost saved about 8,000 RMB and failure rate reduced by 90%.
Cas 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.
Solution: Fully replaced with LC1D38BLDC24V contactors to unify control standards, and matched with Schneider PLC for centralized control and fault diagnosis.
Résultat: Line downtime reduced by 85%, coûts de maintenance réduits de 70% and production efficiency improved by 15%. The low-power design lowered cabinet temperature and prolonged service life of other electrical components.
Cas 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.
Solution: Switched to LC1D38BLDC24V DC coil contactors which adapt to DC output of UPS. The low-power design also reduced UPS load.
Résultat: 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.
