Contattore,interruttore automatico,inverter solare,contatore elettrico,batterie solari
Schneider LC1D38BLDC24V TeSys D Series Contattore 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, tifosi, water pumps and other facilities. Per la selezione, comprehensively consider load type, tensione di controllo, 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 Contatti ausiliari 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.
- Spiegazione del codice modello
| Segmento di codice | Senso | Descrizione |
| LC1 | Series Prefix | Identifier for Schneider TeSys contactors; LC1 stands for three-pole contactor |
| D | Sottoserie | TeSys serie D, general-purpose industrial contactor with 45mm width for standard applications |
| 38 | Corrente nominale | Rated operational current of main contacts: 38UN (AC-3, 440V) |
| B | Tensione della bobina | 24V (B=24V, C=36V, Potenza=48V, F=110V, M=220V, P=230V, U=240V, ecc.) |
| l | Tipo di bobina | 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 | Tensione della bobina | Explicit rated voltage: 24A DC |
| -XXX | Suffix Code | Optional configurations including auxiliary contacts (per esempio. 3BL = 3NO+1NO+1NC) and terminal types |
- Specifiche principali
| Articolo | Valore | Osservazioni |
| Marca | Schneider Electric | World-renowned electrical equipment manufacturer |
| Serie | TeSys D (LC1D) | General-purpose industrial contactor with high cost performance |
| Tipo | Three-pole AC contactor with low-consumption DC coil | Non-reversing type, for motor start and stop control |
| Configurazione del contatto principale | 3NO (3 Normalmente aperto) | Standard design for three-phase circuit control |
| Configurazione dei contatti ausiliari | 1NA+1NC (1 Normalmente aperto + 1 Normalmente chiuso) | Built-in auxiliary contacts for control circuits |
| Corrente nominale | 38UN (AC-3, 440V) | Rated current for motor loads |
| Tensione operativa nominale | ≤690 V CA (25~400Hz), ≤300 V CC | Maximum voltage of main circuit |
| Tensione della bobina | 24A DC | Tensione del circuito di controllo; Operating range: 20.4~26.4V DC |
| Consumo energetico della bobina | Accoglienza: 18W, Presa: 2.5W | Low-power design for energy saving and less heat generation |
| Potenza nominale | 18.5kW (AC-3, 440V, 50Hz) | Maximum power of controllable motor |
| Resistenza meccanica | 10,000,000 operazioni | High-reliability construction |
| Resistenza elettrica | 1,000,000 operazioni (under rated AC-3 conditions) | Conforme alla norma CEI 60947-4-1 |
| Metodo di montaggio | Montaggio su guida DIN (IN 50022) or screw mounting | Flexible installation for control cabinet layout |
| Larghezza | 45mm | Standard width to save cabinet space |
| Terminali | Everlink hexagon socket screw terminals | Firm connection with anti-loosening design |
| Protezione dall'ingresso | IP20 (corpo principale) | Suitable for indoor control cabinets |
| Certificazioni | CEI 60947-4-1, UL, CSA, CE | Conforme agli standard di sicurezza internazionali |
| Colore | Nero | Standard industrial color |
| Peso | ca. 420G | Leggero per una facile installazione |
- Compatibilità tra marchi & Sostituzione
| Marca | Modello equivalente | Specifiche | Raccomandazione di sostituzione |
| Schneider | LC1D38BD | 38UN, 24V DC standard coil, 3NA+1NA+1NC | Standard power version; coil pull-in 28W, holding 4W, prezzo più basso |
| Schneider | LC1D38BNE | 38UN, 24V AC/DC universal coil, 3NO | Universal AC/DC coil, ideal for unstable power supply |
| ABB | A145-30-11 | 38UN, 24Bobina da V CC, 3NA+1NA+1NC | Similar size and performance, sostituzione diretta disponibile |
| Siemens | 3RT2026-1BB40 | 38UN, 24Bobina da V CC, 3NA+1NA+1NC | German brand with reliable quality, prezzo più alto |
| Omron | GMC-38 | 38UN, 24Bobina da V CC, 3NA+1NA+1NC | Japanese brand with fast response, for precision control |
| CINT | CJX2-3810Z | 38UN, 24Bobina da V CC, 3NO+1NO | Alternativa domestica, cost-effective and stable performance |
| Interruttore Changshu | CK3-38 | 38UN, 24Bobina da V CC, 3NA+1NA+1NC | Noto marchio nazionale con prestazioni ad alto costo |
- Full Model List of LC1D38 Series
| Modello | Tipo di bobina | Tensione della bobina | Contatti principali | Contatti ausiliari | Caratteristiche | Ordine n. |
| LC1D38BLDC24V | Low-consumption DC | 24A DC | 3NO | 1NA+1NC | Energy-saving design, suitable for long-term operation | LC1D38BL |
| LC1D38BDDC24V | Standard DC | 24A DC | 3NO | 1NA+1NC | Standard power, economical price | LC1D38BD |
| LC1D38B7AC24V | Standard AC | 24V e | 3NO | 1NA+1NC | AC coil, for traditional control circuits | LC1D38B7 |
| LC1D38BLAC24V | Low-consumption AC | 24V e | 3NO | 1NA+1NC | Low-power AC type, risparmio energetico | LC1D38BL |
| LC1D383BLDC24V | Low-consumption DC | 24A DC | 3NO | 3NA+1NC | Multiple auxiliary contacts, for complex control | LC1D383BL |
| LC1D38BDC24V | Standard DC | 24A DC | 3NO | Nessun contatto ausiliario | Modello base, for simple control | LC1D38BDC |
| LC1D38KUEDC24V | Bobina universale | 24A DC | 3NO | 1NA+1NC | Ampio intervallo di tensione, adapts to power fluctuation | LC1D38KUE |
| LC1D38BLDC48V | Low-consumption DC | 48A DC | 3NO | 1NA+1NC | Dedicated for 48V systems | LC1D38BL |
- Ambiente applicativo & Guida alla selezione
Applicazioni consigliate
Controllo motori industriali: Inizio, 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
Fan & Water Pump Control: Sistemi HVAC, industrial cooling systems, apparecchiature per il trattamento dell'acqua
Compressor Control: Compressori d'aria, compressori frigoriferi, ecc.
Trasportatori & Production Lines: Power control for automated production lines
Macchine utensili: Motor control for CNC machine tools, fresatrici, grinders and other equipment
Energia rinnovabile: Auxiliary control for photovoltaic inverters and wind power systems
Not Recommended Applications
High-frequency Start-Stop: Sopra 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
Serie 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.
- Difetti comuni & Risoluzione dei problemi
| Fenomeno di guasto | Possibili cause | Passaggi per la risoluzione dei problemi | Soluzioni |
| Il contattore non si inserisce | 1. Low or no control voltage | 1. Misurare la tensione della bobina (intervallo normale: 20.4~26.4V) | 1. Stabilize control voltage |
| 2. Bobina bruciata | 2. Test coil resistance (normal value: ca. 17惟) | 2. Replace with identical contactor | |
| 3. Inceppamento meccanico | 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. Sostituire il modulo contatti ausiliari | |
| Surriscaldamento / 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 ambiente eccessivamente elevata | 4. Measure ambient temperature | 4. Add heat dissipation measures | |
| Rumore di funzionamento eccessivo | 1. Oil or dust on iron core surface | 1. Clean iron core surface | 1. Wipe and clean iron core |
| 2. Anello di ombreggiatura rotto | 2. Check integrity of shading ring | 2. Replace contactor | |
| 3. Installazione allentata | 3. Tighten mounting screws | 3. Fasten all fixing screws | |
| 4. Bassa tensione di alimentazione | 4. Misurare la tensione della bobina | 4. Stabilize power supply voltage | |
| Overheated coil | 1. Sovratensione | 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 ambiente elevata | 3. Measure ambient temperature | 3. Improve heat dissipation | |
| 4. Continuous energization | 4. Verify long-term energization requirements | 4. Adopt pulse control mode |
- Industrial Application Cases
Caso 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.
Soluzione: Replaced with Schneider LC1D38BLDC24V contactors featuring low-consumption DC coils, combined with PLC for soft start and variable frequency speed regulation.
Result: Coil temperature decreased by 25%, power consumption cut by 50%, service life extended to 5 anni. Annual electricity cost saved about 8,000 RMB and failure rate reduced by 90%.
Caso 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.
Soluzione: Fully replaced with LC1D38BLDC24V contactors to unify control standards, and matched with Schneider PLC for centralized control and fault diagnosis.
Result: Line downtime reduced by 85%, costi di manutenzione ridotti 70% and production efficiency improved by 15%. The low-power design lowered cabinet temperature and prolonged service life of other electrical components.
Caso 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.
Soluzione: Switched to LC1D38BLDC24V DC coil contactors which adapt to DC output of UPS. The low-power design also reduced UPS load.
Result: 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.
