접촉기,회로 차단기,감지기,인코더,PLC,변환기
시리즈: 테시스 D (TeSys Deca), import model (without suffix-C)
모델 디코딩
LC1D: 테시스 D 시리즈 3-극 AC 접촉기
18: Rated operational current 18A under AC-3 utilization category
중: Coil voltage AC220V
7: Coil frequency 50/60Hz universal
LC1D18MC: Domestic-manufactured version; LC1D18M7: Overseas/imported version. Fully pin-to-pin compatible and interchangeable.
핵심 전기 사양
| 목 | 매개변수 |
| 주회로 | 3-폴, 3아니요; AC‑3:18에이; Max operating voltage 690V |
| 정격 모터 전력 (AC‑3) | 220다섯:4kW; 380‑400V:7.5kW; 440다섯:9kW |
| 보조 연락처 | 1아니요 + 1NC (mirror contacts) |
| 코일 | AC220V 50/60Hz; Pick‑up 70VA, Holding 7‑7.5VA |
| 기계적 내구성 | 15 million operations; Electrical endurance AC‑3:1.65 million operations |
| 설치 | 35 mm DIN‑rail or screw‑mounting |
| 전체 치수 | W45 × H77 × D86 mm; Net weight 0.33 kg |
| 터미널 토크 | 기본 & 제어 회로: 1.7 N·m |
| 작동 온도 | ‑40～+60 ℃; Derating required for 60‑70 ℃ |
| 보호 등급 | IP20 |
터미널 할당
주회로: L1(1-1), L2(3-2), L3(5-3); T1(2-1), T2(4-2), T3(6-3)
코일: A1, A2 → AC220V power supply
보조자: 13-14 (NO Normally Open), 21-22 (NC Normally Closed)
선택 & 대사
- 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 (1아니요), CJX2-1801 (1NC), CJX2-1811 (1아니요+1NC) matches the auxiliary-contact configuration of this model.
일반적인 응용 분야
Direct-on-line switching of 3-phase motors, 팬, 물 펌프, 압축기, HVAC 시스템, low-voltage switchgear, 스타델타 스타터, 컨베이어 벨트; Standard AC-3 motor loads; Up to 32A for AC-1 resistive loads.
문제 해결 & 유지보수 노트
- 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 슈나이더 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, 건물 서비스, HVAC and OEM equipment.
- 산업기계 & 장비
Direct start-stop control for 3-phase asynchronous motors: 컨베이어 벨트, 믹서, 그라인더, 작은 펌프, 공기 압축기, 환기 팬.
Machine-tool equipment: 선반, 밀링 머신, 포장 기계, 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.
- 공조 (난방, Ventilation and Air-Conditioning)
Central air-conditioning units, cabinet fans, 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.
- 건물 서비스 & 배전
Factory power panels, compact low-voltage distribution cabinets.
Water supply & 배수: 하수 펌프, booster pumps, drain-pump control.
Centralised lighting control (Max.32 A AC-1 resistive), switching for high-power heating elements and resistive loads.
- 리프팅 & 물류창고
Small hoisting mechanisms, 컨베이어 시스템, 분류 장비.
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.
애플리케이션 제한 (부적합한 시나리오)
- Not intended for DC main-circuit switching (DC-type contactor required).
- Avoid extremely frequent jogging / high-cycle operation, 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
과부하 보호: LRD series thermal overload relays
Auxiliary-contact expansion: LADN auxiliary contact blocks
Coil surge suppression: LADRC surge suppressors to reduce electromagnetic interference
