Schneider LC1D18M7 AC Contactor

シリーズ: テシスD (TeSys Deca), import model (without suffix-C)

モデルのデコード

18: Rated operational current 18A under AC-3 utilization category

M: Coil voltage AC220V

7: Coil frequency 50/60Hz universal

LC1D18MC: Domestic-manufactured version; LC1D18M7: Overseas/imported version. Fully pin-to-pin compatible and interchangeable.

コアの電気仕様

アイテム	パラメータ
主回路	3-ポール, 3いいえ; AC-3:18あ; Max operating voltage 690V
モーター定格出力 (AC-3)	220V:4kW; 380‑400V:7.5kW; 440V:9kW
補助接点	1いいえ + 1ノースカロライナ州 (mirror contacts)
コイル	AC220V 50/60Hz; Pick‑up 70VA, Holding 7‑7.5VA
機械的耐久性	15 million operations; Electrical endurance AC‑3:1.65 million operations
取り付け	35 mm DIN‑rail or screw‑mounting
全体の寸法	W45 × H77 × D86 mm; Net weight 0.33 kg
端子トルク	主要 & 制御回路: 1.7 N・m
動作温度	‑40～+60 ℃; Derating required for 60‑70 ℃
保護クラス	IP20

Terminal Assignment

主回路: L1(1-1), L2(3-2), L3(5-3); T1(2-1), T2(4-2), T3(6-3)

コイル: A1, A2 → AC220V power supply

補助: 13-14 (NO Normally Open), 21-22 (NC Normally Closed)

選択 & 交換

Direct compatible domestic equivalent: LC1D18M7C (Local production, identical footprint, current and coil rating, widely used in projects)
Coil voltage variants:

LC1D18B7: AC24V

LC1D18F7: AC110V

LC1D18Q7: AC380V

Domestic compatible alternatives: CJX2-1810 (1いいえ), CJX2-1801 (1ノースカロライナ州), CJX2-1811 (1NO+1NC) matches the auxiliary-contact configuration of this model.

代表的な用途

Direct-on-line switching of 3-phase motors, ファン, ウォーターポンプ, コンプレッサー, HVAC システム, low-voltage switchgear, スターデルタスターター, コンベヤーベルト; Standard AC-3 motor loads; Up to 32A for AC-1 resistive loads.

トラブルシューティング & メンテナンスノート

Judge coil integrity by measuring resistance across A1-A2. Operating coil voltage shall remain within 0.8-1.1 × 220 V; Undervoltage causes chattering.
Auxiliary contacts rated max.5A, for control-signal circuits only. Do not switch power loads.
Tighten terminals to 1.7 N·m. Insufficient torque leads to overheating and burnt terminals.

Application Fields of シュナイダー LC1D18M7 AC Contactor

LC1D18M7 is a TeSys-D 3-pole 18A contactor, rated for 7.5 kW@400 V under AC-3 with AC220 V 50/60 Hz coil. It is widely deployed in industry, 建築サービス, HVAC and OEM equipment.

産業機械 & 装置

Direct start-stop control for 3-phase asynchronous motors: コンベヤーベルト, ミキサー, グラインダー, 小さなポンプ, エアコンプレッサー, 換気扇.

工作機械設備: 旋盤, フライス盤, 包装機械, printing equipment for main-circuit switching.

Star-delta starting circuits, motor-reversing circuits. Can be paired with thermal overload relays for motor overload protection.

Automation control cabinets: PLC outputs drive contactor coils to switch high-power loads.

空調設備 (加熱, Ventilation and Air-Conditioning)

Central air-conditioning units, キャビネットファン, cooling-tower fans, circulating water pumps.

Fresh-air handling and exhaust systems, building electromechanical switch rooms.

AC220 V coil variants such as LC1D18M7 are extensively used in HVAC installations.

Building Services & 配電

Factory power panels, compact low-voltage distribution cabinets.

Water supply & 排水: 下水ポンプ, ブースターポンプ, drain-pump control.

Centralised lighting control (Max.32 A AC-1 resistive), switching for high-power heating elements and resistive loads.

リフティング & Logistics Warehousing

Small hoisting mechanisms, コンベアシステム, 仕分け装置.

Not suitable for heavy jog-lifting duty cycles (Select higher-endurance contactors for frequent jogging).

OEM Complete-Set Equipment

Used as standard component by machinery manufacturers: food-processing machines, auxiliary injection-moulding equipment, environmental-protection and water-treatment systems.

アプリケーションの制限 (不適切なシナリオ)

Not intended for DC main-circuit switching (DC-type contactor required).
Avoid extremely frequent jogging / ハイサイクル動作, which drastically shortens electrical service life.
1NO+1NC auxiliary contacts are limited to control-level signals (max.5 A). Never carry main power loads.

Common Matching Accessories

過負荷保護: LRD series thermal overload relays

Auxiliary-contact expansion: LADN auxiliary contact blocks

Coil surge suppression: LADRC surge suppressors to reduce electromagnetic interference