Contactor,întrerupător de circuit,invertor solar,contor electric,baterii solare
Schneider LC1D38BLDC24V TeSys D Series Contactor 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, sisteme PLC, fani, water pumps and other facilities. Pentru selecție, comprehensively consider load type, tensiune de control, 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 Contacte auxiliare NC, 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.
- Codul modelului Explicația
| Segment de cod | Sens | Descriere |
| LC1 | Series Prefix | Identifier for Schneider TeSys contactors; LC1 stands for three-pole contactor |
| D | Sub-serie | Seria D TeSys, general-purpose industrial contactor with 45mm width for standard applications |
| 38 | Curent nominal | Rated operational current of main contacts: 38O (AC-3, 440V) |
| B | Tensiunea bobinei | 24V (B=24V, C=36V, E=48V, F=110V, M=220V, P=230V, U=240V, etc.) |
| L | Tip bobină | Low consumption coil, power consumption reduced by about 50% compared with standard coils |
| DC | Coil Power Supply | Direct current coil, distinguished from AC coils |
| 24V | Tensiunea bobinei | Explicit rated voltage: 24În DC |
| -XXX | Suffix Code | Optional configurations including auxiliary contacts (de ex. 3BL = 3NO+1NO+1NC) and terminal types |
- Main Specifications
| Articol | Valoare | Observații |
| Marca | Schneider Electric | World-renowned electrical equipment manufacturer |
| Serie | TeSys D (LC1D) | General-purpose industrial contactor with high cost performance |
| Tip | Three-pole AC contactor with low-consumption DC coil | Non-reversing type, for motor start and stop control |
| Configurarea contactului principal | 3NU (3 Deschis normal) | Standard design for three-phase circuit control |
| Configurarea contactelor auxiliare | 1NU+1NC (1 Deschis normal + 1 În mod normal închis) | Built-in auxiliary contacts for control circuits |
| Curent nominal | 38O (AC-3, 440V) | Rated current for motor loads |
| Tensiune nominală de funcționare | ≤690V AC (25~400Hz), ≤300V DC | Maximum voltage of main circuit |
| Tensiunea bobinei | 24În DC | Tensiunea circuitului de control; Operating range: 20.4~26.4V DC |
| Consumul de energie al bobinei | Pull-in: 18W, Deţinere: 2.5W | Low-power design for energy saving and less heat generation |
| Putere nominală | 18.5kW (AC-3, 440V, 50Hz) | Maximum power of controllable motor |
| Rezistenta mecanica | 10,000,000 operațiuni | High-reliability construction |
| Rezistenta electrica | 1,000,000 operațiuni (under rated AC-3 conditions) | Conform IEC 60947-4-1 |
| Metoda de montare | Montare pe șină DIN (ÎN 50022) or screw mounting | Flexible installation for control cabinet layout |
| Lăţime | 45mm | Standard width to save cabinet space |
| Terminale | Everlink hexagon socket screw terminals | Firm connection with anti-loosening design |
| Protecție la intrare | IP20 (corpul principal) | Suitable for indoor control cabinets |
| Certificari | IEC 60947-4-1, UL, CSA, CE | Conform standardelor internaționale de siguranță |
| Culoare | Negru | Standard industrial color |
| Greutate | Aproximativ. 420g | Ușoare pentru instalare ușoară |
- Cross-Brand Compatibility & Înlocuire
| Marca | Model echivalent | Specificații | Recomandare de înlocuire |
| Schneider | LC1D38BD | 38O, 24V DC standard coil, 3NO+1NO+1NC | Standard power version; coil pull-in 28W, holding 4W, Preț mai mic scăzut |
| Schneider | LC1D38BNE | 38O, 24V AC/DC universal coil, 3NU | Universal AC/DC coil, ideal for unstable power supply |
| ABB | A145-30-11 | 38O, 24bobina V DC, 3NO+1NO+1NC | Similar size and performance, înlocuire directă disponibilă |
| Siemens | 3RT2026-1BB40 | 38O, 24bobina V DC, 3NO+1NO+1NC | German brand with reliable quality, pret mai mare |
| Omron | GMC-38 | 38O, 24bobina V DC, 3NO+1NO+1NC | Japanese brand with fast response, for precision control |
| CHINT | CJX2-3810Z | 38O, 24bobina V DC, 3NO+1NO | Alternativă internă, cost-effective and stable performance |
| Comutator Changshu | CK3-38 | 38O, 24bobina V DC, 3NO+1NO+1NC | Marcă autohtonă cunoscută cu performanță ridicată la costuri |
- Full Model List of LC1D38 Series
| Model | Tip bobină | Tensiunea bobinei | Contacte principale | Contacte auxiliare | Caracteristici | Comanda nr. |
| LC1D38BLDC24V | Low-consumption DC | 24În DC | 3NU | 1NU+1NC | Energy-saving design, suitable for long-term operation | LC1D38BL |
| LC1D38BDDC24V | Standard DC | 24În DC | 3NU | 1NU+1NC | Standard power, economical price | LC1D38BD |
| LC1D38B7AC24V | Standard AC | 24V și | 3NU | 1NU+1NC | AC coil, for traditional control circuits | LC1D38B7 |
| LC1D38BLAC24V | Low-consumption AC | 24V și | 3NU | 1NU+1NC | Low-power AC type, economisitoare de energie | LC1D38BL |
| LC1D383BLDC24V | Low-consumption DC | 24În DC | 3NU | 3NU+1NC | Multiple auxiliary contacts, for complex control | LC1D383BL |
| LC1D38BDC24V | Standard DC | 24În DC | 3NU | Fără contacte auxiliare | Model de bază, for simple control | LC1D38BDC |
| LC1D38KUEDC24V | Universal coil | 24În DC | 3NU | 1NU+1NC | Gamă largă de tensiune, adapts to power fluctuation | LC1D38KUE |
| LC1D38BLDC48V | Low-consumption DC | 48În DC | 3NU | 1NU+1NC | Dedicated for 48V systems | LC1D38BL |
- Mediul de aplicare & Ghid de selecție
Aplicații recomandate
Controlul motorului industrial: Început, 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
Ventilator & Water Pump Control: sisteme HVAC, industrial cooling systems, water treatment equipment
Controlul compresorului: Compresoare de aer, compresoare frigorifice, etc.
Transportoare & Production Lines: Power control for automated production lines
Mașini-unelte: Motor control for CNC machine tools, mașini de frezat, grinders and other equipment
Energie regenerabilă: Auxiliary control for photovoltaic inverters and wind power systems
Aplicații nerecomandate
High-frequency Start-Stop: Peste 10 operations per minute; special contactors are recommended
Inflamabil & 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 series, 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.
- Defecte comune & Depanare
| Fenomen de eroare | Cauze posibile | Pași de depanare | Soluții |
| Contactorul nu reușește să tragă | 1. Low or no control voltage | 1. Measure coil voltage (normal range: 20.4~26.4V) | 1. Stabilize control voltage |
| 2. Burned coil | 2. Test coil resistance (normal value: aproximativ. 17惟) | 2. Replace with identical contactor | |
| 3. Blocaj mecanic | 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. Înlocuiți modulul de contact auxiliar | |
| Supraîncălzire / 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. Temperatura ambientală excesiv de ridicată | 4. Măsurați temperatura ambiantă | 4. Add heat dissipation measures | |
| Zgomot excesiv de funcționare | 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. Tighten mounting screws | 3. Fasten all fixing screws | |
| 4. Low supply voltage | 4. Measure coil voltage | 4. Stabilize power supply voltage | |
| Overheated coil | 1. Supratensiune | 1. Check if coil voltage exceeds 26.4V | 1. Lower control voltage |
| 2. Coil aging | 2. Check coil for discoloration | 2. Replace contactor | |
| 3. Temperatura ambientală ridicată | 3. Măsurați temperatura ambiantă | 3. Îmbunătățiți disiparea căldurii | |
| 4. Continuous energization | 4. Verify long-term energization requirements | 4. Adopt pulse control mode |
- Industrial Application Cases
Caz 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.
Soluţie: Replaced with Schneider LC1D38BLDC24V contactors featuring low-consumption DC coils, combined with PLC for soft start and variable frequency speed regulation.
Rezultat: Coil temperature decreased by 25%, power consumption cut by 50%, durata de viata extinsa la 5 ani. Annual electricity cost saved about 8,000 RMB and failure rate reduced by 90%.
Caz 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.
Soluţie: Fully replaced with LC1D38BLDC24V contactors to unify control standards, and matched with Schneider PLC for centralized control and fault diagnosis.
Rezultat: Line downtime reduced by 85%, costul de întreținere redus cu 70% and production efficiency improved by 15%. The low-power design lowered cabinet temperature and prolonged service life of other electrical components.
Caz 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.
Soluţie: Switched to LC1D38BLDC24V DC coil contactors which adapt to DC output of UPS. The low-power design also reduced UPS load.
Rezultat: 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.
