コンタクタ,サーキットブレーカー,ソーラーインバーター,電気メーター,太陽電池
Schneider LC1D38BLDC24V TeSys D Series コンタクタ 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, ファン, water pumps and other facilities. 選択用, comprehensively consider load type, 制御電圧, 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 いいえ、そして 1 NC補助接点, 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.
- 型式コードの説明
| コードセグメント | 意味 | 説明 |
| LC1 | シリーズプレフィックス | Identifier for Schneider TeSys contactors; LC1 stands for three-pole contactor |
| D | サブシリーズ | TeSys Dシリーズ, general-purpose industrial contactor with 45mm width for standard applications |
| 38 | 定格電流 | Rated operational current of main contacts: 38あ (AC-3, 440V) |
| B | コイル電圧 | 24V (B=24V, C=36V, E=48V, F=110V, M=220V, P=230V, U=240V, 等) |
| L | コイルの種類 | Low consumption coil, power consumption reduced by about 50% compared with standard coils |
| 直流 | Coil Power Supply | Direct current coil, distinguished from AC coils |
| 24V | コイル電圧 | Explicit rated voltage: 24ワシントンDCで |
| -XXX | Suffix Code | Optional configurations including auxiliary contacts (例えば. 3BL = 3NO+1NO+1NC) and terminal types |
- 主な仕様
| アイテム | 価値 | 備考 |
| ブランド | シュナイダーエレクトリック | World-renowned electrical equipment manufacturer |
| シリーズ | テシスD (LC1D) | General-purpose industrial contactor with high cost performance |
| タイプ | Three-pole AC contactor with low-consumption DC coil | Non-reversing type, for motor start and stop control |
| 主な接点構成 | 3いいえ (3 通常開) | Standard design for three-phase circuit control |
| 補助接点構成 | 1NO+1NC (1 通常開 + 1 通常閉) | Built-in auxiliary contacts for control circuits |
| 定格電流 | 38あ (AC-3, 440V) | Rated current for motor loads |
| 定格動作電圧 | ≤690V AC (25～400Hz), ≤300V DC | Maximum voltage of main circuit |
| コイル電圧 | 24ワシントンDCで | Control circuit voltage; Operating range: 20.4~26.4V DC |
| コイル消費電力 | Pull-in: 18W, 保持: 2.5W | Low-power design for energy saving and less heat generation |
| 定格電力 | 18.5kW (AC-3, 440V, 50Hz) | Maximum power of controllable motor |
| 機械的耐久性 | 10,000,000 オペレーション | High-reliability construction |
| 電気的耐久性 | 1,000,000 オペレーション (under rated AC-3 conditions) | IEC準拠 60947-4-1 |
| 取付方法 | DINレール取付 (で 50022) or screw mounting | Flexible installation for control cabinet layout |
| 幅 | 45mm | Standard width to save cabinet space |
| 端子 | Everlink hexagon socket screw terminals | Firm connection with anti-loosening design |
| 侵入保護 | IP20 (main body) | Suitable for indoor control cabinets |
| 認証 | IEC 60947-4-1, UL, CSA, CE | 国際安全規格に準拠 |
| 色 | 黒 | Standard industrial color |
| 重さ | 約. 420g | 軽量で設置が簡単 |
- ブランド間の互換性 & 交換
| ブランド | 同等モデル | 仕様 | 交換の推奨事項 |
| シュナイダー | LC1D38BD | 38あ, 24V DC standard coil, 3NO+1NO+1NC | Standard power version; coil pull-in 28W, holding 4W, 低価格 |
| シュナイダー | LC1D38BNE | 38あ, 24V AC/DC universal coil, 3いいえ | Universal AC/DC coil, ideal for unstable power supply |
| ABB | A145-30-11 | 38あ, 24V DC coil, 3NO+1NO+1NC | Similar size and performance, 直接交換可能 |
| シーメンス | 3RT2026-1BB40 | 38あ, 24V DC coil, 3NO+1NO+1NC | German brand with reliable quality, より高い価格 |
| オムロン | GMC-38 | 38あ, 24V DC coil, 3NO+1NO+1NC | Japanese brand with fast response, for precision control |
| チント | CJX2-3810Z | 38あ, 24V DC coil, 3NO+1NO | 国内代替品, cost-effective and stable performance |
| 常熟スイッチ | CK3-38 | 38あ, 24V DC coil, 3NO+1NO+1NC | コストパフォーマンスの高い国内有名ブランド |
- Full Model List of LC1D38 Series
| モデル | コイルの種類 | コイル電圧 | 主な連絡先 | 補助接点 | 特徴 | 注文番号. |
| LC1D38BLDC24V | Low-consumption DC | 24ワシントンDCで | 3いいえ | 1NO+1NC | Energy-saving design, suitable for long-term operation | LC1D38BL |
| LC1D38BDDC24V | Standard DC | 24ワシントンDCで | 3いいえ | 1NO+1NC | Standard power, economical price | LC1D38BD |
| LC1D38B7AC24V | Standard AC | 24Vと | 3いいえ | 1NO+1NC | AC coil, for traditional control circuits | LC1D38B7 |
| LC1D38BLAC24V | Low-consumption AC | 24Vと | 3いいえ | 1NO+1NC | Low-power AC type, 省エネ | LC1D38BL |
| LC1D383BLDC24V | Low-consumption DC | 24ワシントンDCで | 3いいえ | 3NO+1NC | Multiple auxiliary contacts, for complex control | LC1D383BL |
| LC1D38BDC24V | Standard DC | 24ワシントンDCで | 3いいえ | No auxiliary contacts | ベーシックモデル, for simple control | LC1D38BDC |
| LC1D38KUEDC24V | Universal coil | 24ワシントンDCで | 3いいえ | 1NO+1NC | 広い電圧範囲, adapts to power fluctuation | LC1D38KUE |
| LC1D38BLDC48V | Low-consumption DC | 48ワシントンDCで | 3いいえ | 1NO+1NC | Dedicated for 48V systems | LC1D38BL |
- アプリケーション環境 & セレクションガイド
推奨アプリケーション
産業用モーター制御: 始める, 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
ファン & Water Pump Control: HVAC システム, industrial cooling systems, water treatment equipment
コンプレッサー制御: Air compressors, refrigeration compressors, 等.
コンベヤ & Production Lines: Power control for automated production lines
工作機械: Motor control for CNC machine tools, フライス盤, grinders and other equipment
再生可能エネルギー: Auxiliary control for photovoltaic inverters and wind power systems
推奨されないアプリケーション
High-frequency Start-Stop: 以上 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シリーズ, 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.
- 一般的な障害 & トラブルシューティング
| 故障現象 | 考えられる原因 | トラブルシューティングの手順 | ソリューション |
| コンタクタが引き込まれない | 1. Low or no control voltage | 1. コイル電圧を測定する (正常範囲: 20.4~26.4V) | 1. Stabilize control voltage |
| 2. 焼けたコイル | 2. Test coil resistance (normal value: 約. 17惟) | 2. Replace with identical contactor | |
| 3. 機械的な妨害 | 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. 補助接点モジュールを交換する | |
| Overheating / 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. 周囲温度が高すぎる | 4. Measure ambient temperature | 4. Add heat dissipation measures | |
| 過度の動作騒音 | 1. Oil or dust on iron core surface | 1. Clean iron core surface | 1. Wipe and clean iron core |
| 2. 壊れたシェーディングリング | 2. Check integrity of shading ring | 2. Replace contactor | |
| 3. Loose installation | 3. Tighten mounting screws | 3. Fasten all fixing screws | |
| 4. 供給電圧が低い | 4. コイル電圧を測定する | 4. Stabilize power supply voltage | |
| Overheated coil | 1. 過電圧 | 1. Check if coil voltage exceeds 26.4V | 1. Lower control voltage |
| 2. Coil aging | 2. Check coil for discoloration | 2. Replace contactor | |
| 3. 周囲温度が高い | 3. Measure ambient temperature | 3. 放熱性を向上させる | |
| 4. Continuous energization | 4. Verify long-term energization requirements | 4. Adopt pulse control mode |
- Industrial Application Cases
場合 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.
解決: 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 年. Annual electricity cost saved about 8,000 RMB and failure rate reduced by 90%.
場合 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.
解決: 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%, maintenance cost cut by 70% and production efficiency improved by 15%. The low-power design lowered cabinet temperature and prolonged service life of other electrical components.
場合 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.
解決: 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.
