Schneider LC1D115F7 AC Contactor

시리즈: 테시스 데카 (테시스 D) 3-극 AC 접촉기

모델 코드 설명

LC1D: TeSys D standard contactor series

115: AC-3 rated current 115A @ 440V

에프: Coil voltage code → 110V AC

7: 50/60Hz universal frequency

핵심 전기 매개변수

주요 연락처: 3피, 3 평상시 열림 (3아니요)

AC-3 (motor duty): 115A ≤440V; suitable for 55kW motor at 400V

AC-1 (저항 부하): Conventional thermal current Ith=200A (60℃ 이하)

코일: AC110V, 50/60헤르츠

내장형 보조 접점: 1아니요 + 1NC

정격 전류 내전압 Uimp: 8kV; 활용 카테고리: AC-3 / AC-3e / AC-1 / AC-4

Short-time making capacity: 1260A @440V

SCCR short-circuit withstand rating: up to 100kA

기계 & 환경 사양

전반적인 차원: H158mm × W120mm × D136mm; Net weight 2.5kg

Front face protection: IP20

주변 온도: -40℃ ~ +60℃; derating required from 60℃ to 70℃

Maximum installation altitude: 3000중

표준: IEC60947-4-1, CCC, CE, UL, CSA certifications

최대 작동 주파수: 2400 주기/시간

수명 종료 & 교체 정보

This model is scheduled for discontinuation (last supply date: 31-Dec-2026)

Official recommended upgraded replacements:

LC1D115AEHE: 48–130V AC/DC wide-voltage coil, Everlink terminal, 장착 호환

LC1D115AKUE: 100–250V AC/DC wide-voltage version

메모: Replacement models adopt wide AC/DC coils with the same logic as original 110VAC coil. Terminal hole layout and DIN rail mounting are fully compatible, direct cabinet retrofit is available.

호환 가능한 액세서리

열과부하 계전기: LRD43 series (for 115A range)

보조 접점 블록: LA1DN (for extra auxiliary contacts)

서지 억제기: LA4DA coil suppressor (for AC coil)

기계적 인터록: LA9D11502 (for reversing circuit)

일반적인 응용 분야

Start/stop control for 3-phase motors such as fans, 물 펌프, air compressors and belt conveyors; widely used in HVAC, panel assembly and automated production lines.

Application Cases of LC1D115F7 (115에이, AC110V Coil)

Basic capability: 맥스. 55kW 3-phase squirrel-cage motor under AC-3 @400V; control circuit AC110V, 1NO+1NC 보조 접점 내장. Suitable for DOL direct-on-line, 스타델타, forward-reversing and MCC motor control circuits. Widely used in panel assemblies, 공조, 수처리, air compressors and conveyor lines. The most typical configuration uses 110V isolation transformer secondary as control power supply.

사례 1: DOL Starter Cabinet for Chiller Compressor (Central Air Conditioning Host)

짐: 55kW screw compressor motor, 400V 3상

Circuit configuration: 회로 차단기 + LC1D115F7 + LRD43 thermal relay; PLC sends 110VAC control signal to energize contactor coil

제어 논리: PLC sequential control (start oil pump and cooling water pump first, then host compressor); thermal relay fault feedback to PLC; local manual / remote auto switch

Selection reason: Secondary control of chiller cabinet uniformly adopts AC110V, perfectly matching F coil; compressor operates with low switching frequency, sufficient electrical life; CCC+CE, meets MEP acceptance requirements

Accessory used: LA4DA coil surge suppressor (to suppress back EMF from compressor startup)

사례 2: 시립 / Plant Fire Main Pump (Star-Delta Starting)

짐: 55kW fire sprinkler pump / hydrant pump

Circuit configuration: 3 pcs LC1D115F7 for star-delta starter (main contactor, 스타 접촉기, 델타 접촉기), with timer, mechanical interlock and fire alarm terminal block

특징: Many fire control cabinets adopt AC110V secondary circuit, F7 coil is a direct match; auxiliary contacts feed running and fault status to fire alarm host; thermal relay is required for overload protection (fire code allows overload alarm without immediate shutdown)

비고: 3 contactors with same rating 115A for star-delta circuit; LA9D11502 mechanical interlock is mandatory to prevent short circuit between star and delta states

사례 3: Screw Air Compressor Control Cabinet (55kW)

짐: 55스크류 공기 압축기의 kW 메인 모터, auto start/stop by pressure

회로: Pressure switch / PLC + LC1D115F7 + 열 릴레이; compressor built-in 110V control transformer

작동 조건: Intermittent start-stop, normally <600 주기/시간, well within rated 2400 주기/시간; AC-3 의무

Extra function: Auxiliary contacts connected to compressor controller for running status and fault upload to upper system

사례 4: Water Treatment Plant – Circulating Pump / Sewage Lift Pump

짐: 55kW large-flow centrifugal pump, sludge return pump

계획: DOL direct start; duty-standby interlock circuit (2 pcs LC1D115F7 plus LA9D11502 mechanical interlock)

제어: Auto switching via level / pressure transmitter + PLC; standby pump auto start upon main pump fault; control power AC110V

Environment note: Pump room is humid, dehumidifier fitted inside cabinet; contactor IP20 suitable for cabinet mounting

사례 5: Heavy-duty Belt Conveyor in Factory

짐: 55kW main drive motor for belt conveyor, 무거운 출발

계획: DOL or star-delta; some with forward-reversing function (2 pcs LC1D115F7 + 기계적 인터록)

작동 조건: Heavy inrush current at startup; derating assessment required for AC-4 duty (자주 조깅 & 반전); soft starter is recommended for priority while contactor serves as output switch

신호: Auxiliary contacts send belt running and fault alarm to SCADA

사례 6: MCC Motor Control Center Drawout Unit

대본: MCC cabinet drawer circuit in chemical plant, power plant and building material plant

구성: Standard motor starter drawer unit, 회로 차단기 + LC1D115F7 + 열 릴레이; secondary 110V control supply

이점: Standardized TeSys D series, mature interface for MCC drawer; auxiliary contacts for drawer position and running feedback; easy plug-and-play maintenance

사례 7: High-power Heating Circuit for Resistive Load (Non-motor)

짐: 3-phase heating elements, large electric oven, Ith=200A under AC-1

설명: Higher allowable current 200A for AC-1 resistive load than motor duty. Suitable for main circuit of large hot-air furnace and heat-treatment oven; PLC or temperature controller outputs 110V control signal for coil driving

메모: Arc extinguishing characteristic differs between resistive and motor loads. Not suitable for frequent switching of high-power heating loads.

Supplementary Selection & 작동 참고 사항 (for F7 coil)

1. Coil rated AC110V, DO NOT connect directly to 220V. Control transformer is required inside cabinet to output AC110V
2. This model is at end-of-life phase. New projects prefer replacement model LC1D115AEHE (48–130V AC/DC wide voltage, compatible with 110VAC)
3. 빈번한 시동 정지용, jogging and reversing (AC-4) 애플리케이션, select one higher current rating or adopt soft starter to reduce contact erosion
4. Thermal relay LRD43 series must be fitted for overload protection of all motor circuits

슈나이더 TeSys D LC1D 3-pole Contactor Order List (Standard 3P, 1NO+1NC Auxiliary, 나사식 터미널)

명명 규칙:

LC1D + 현재 등급 + 코일 코드

코일 접미사:

7 = AC 50/60Hz (most common in China)

5=50Hz, 6=60Hz

D=DC coil

B=24V, E=48V, F=110V, M=220V, P=230V, Q=380V, V=400V

⚠️ Old domestic marking for 115/150/170A: LC1D11500F7C; new import version is LC1D115F7 directly, LC1D115F7 is the model above

상태: Old LC1DxxB7/F7/M7/Q7/V7 series to be discontinued by end of 2026

New replacements: AEHE (48–130V AC/DC wide voltage), AKUE (100–250V AC/DC wide voltage)

400V AC-3 Motor Power Reference

Supplementary Categories

1. 4-pole Versions (LC1DT: 4NO resistive; LC1Dxx8: 2아니요+2NC)

LC1DT25 / LC1DT32 / LC1DT40 / LC1DT60A / LC1DT80A

LC1D128 / LC1D188 / LC1D258 / LC1D40008 / LC1D65008

2. Reversing Contactors LC2D (Built-in mechanical interlock, equivalent to two LC1D plus interlock)

LC2D09 / LC2D12 / LC2D18 / LC2D25 / LC2D32 / LC2D38 / LC2D40 / LC2D50 / LC2D65 / LC2D80 / LC2D95 / LC2D115 / LC2D150 / LC2D170

예: LC2D115F7 (115에이, AC110V reversing contactor)

3. Coil Code Quick Reference (국내 프로젝트 공통)

B7: AC24V 50/60Hz

E7: AC48V 50/60Hz

F7: AC110V 50/60Hz (your LC1D115F7)

M7: AC220V 50/60Hz

Q7: AC380V 50/60Hz

V7: AC400V 50/60Hz

BD: DC24V

에드: DC48V

FD: DC110V

MD: DC220V

4. Terminal Variant Code (placed before voltage code)

3: Spring-cage terminal, 예를 들어. LC1D1153F7

6: Ring terminal (cable lug), 예를 들어. LC1D1156F7

5. Matched Thermal Relay Reference (for panel selection)

09~38A: LRD07…LRD35

40~95A: LRD33 series

115~170A: LRD43 series

205 이상: LRD48 series

Important End-of-Life Notice

Old LC1DxxB7/F7/M7/Q7/V7 series last supply: 31-Dec-2026

AEHE: 48–130V AC/DC wide voltage (direct replacement for B7, E7, F7)

AKUE: 100–250V AC/DC wide voltage (direct replacement for M7, P7)

Mounting dimension, cutout and auxiliary contacts are fully compatible, no cabinet drawing modification required