Schneider LC1D115F7 AC Contactor

Serie: TeSys Deca (TeSys D) 3-contattore CA a polo

Spiegazione del codice modello

LC1D: TeSys D standard contactor series

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

F: Coil voltage code → 110V AC

7: 50/60Hz universal frequency

Parametri elettrici principali

Contatti principali: 3P, 3 Normalmente aperto (3NO)

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

AC-1 (carico resistivo): Conventional thermal current Ith=200A (≤60℃)

Bobina: AC110V, 50/60Hz

Contatti ausiliari incorporati: 1NO + 1NC

Tensione nominale di tenuta ad impulso Uimp: 8kV; Utilization categories: AC-3 / AC-3e / AC-1 / AC-4

Short-time making capacity: 1260A @440V

SCCR short-circuit withstand rating: fino a 100kA

Meccanico & Specifiche ambientali

Dimensione complessiva: H158mm × W120mm × D136mm; Net weight 2.5kg

Front face protection: IP20

Temperatura ambiente: -40℃ ~ +60 ℃; derating required from 60℃ to 70℃

Maximum installation altitude: 3000M

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

Maximum operating frequency: 2400 cicli/ora

Fine vita & Informazioni sulla sostituzione

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, compatibile con il montaggio

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

Nota: 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.

Accessori compatibili

Relè termico: LRD43 series (for 115A range)

Blocco contatti ausiliari: LA1DN (for extra auxiliary contacts)

Soppressore di sovratensioni: LA4DA coil suppressor (for AC coil)

Interblocco meccanico: LA9D11502 (per l'inversione del circuito)

Applicazioni tipiche

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

Application Cases of LC1D115F7 (115UN, AC110V Coil)

Basic capability: Massimo. 55kW 3-phase squirrel-cage motor under AC-3 @400V; control circuit AC110V, contatti ausiliari 1NO+1NC incorporati. Suitable for DOL direct-on-line, star-delta, forward-reversing and MCC motor control circuits. Widely used in panel assemblies, HVAC, trattamento dell'acqua, air compressors and conveyor lines. The most typical configuration uses 110V isolation transformer secondary as control power supply.

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

Carico: 55kW screw compressor motor, 400V trifase

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

Logica di controllo: PLC sequential control (start oil pump and cooling water pump first, then host compressor); thermal relay fault feedback to PLC; manuale locale / 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)

Caso 2: Comunale / Plant Fire Main Pump (Star-Delta Starting)

Carico: 55kW fire sprinkler pump / hydrant pump

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

Caratteristiche: 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)

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

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

Carico: 55kW main motor of screw air compressor, auto start/stop by pressure

Circuito: Pressostato / PLC + LC1D115F7 + relè termico; compressor built-in 110V control transformer

Condizioni operative: Avvio-arresto intermittente, normally <600 cicli/ora, well within rated 2400 cicli/ora; Servizio AC-3

Funzione aggiuntiva: Auxiliary contacts connected to compressor controller for running status and fault upload to upper system

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

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

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

Controllare: 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

Caso 5: Heavy-duty Belt Conveyor in Factory

Carico: 55kW main drive motor for belt conveyor, partenza pesante

Schema: DOL or star-delta; some with forward-reversing function (2 pcs LC1D115F7 + interblocco meccanico)

Condizioni operative: Heavy inrush current at startup; derating assessment required for AC-4 duty (jogging frequente & retromarcia); soft starter is recommended for priority while contactor serves as output switch

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

Caso 6: MCC Motor Control Center Drawout Unit

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

Configurazione: Standard motor starter drawer unit, interruttore automatico + LC1D115F7 + relè termico; secondary 110V control supply

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

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

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

Descrizione: 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

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

Selezione supplementare & Note operative (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. Per frequenti start-stop, jogging and reversing (AC-4) applicazioni, 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

Schneider TeSys D LC1D 3-pole Contactor Order List (Standard 3P, 1NO+1NC Auxiliary, Terminale a vite)

Regola di denominazione:

LC1D + Valutazione attuale + Codice bobina

Coil suffix:

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

5=50Hz, 6=60Hz

D=bobina CC

B=24V, Potenza=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

Stato: 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: 2NO+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

Esempio: LC2D115F7 (115UN, AC110V reversing contactor)

3. Coil Code Quick Reference (Common for domestic projects)

B7: AC24V 50/60Hz

E7: AC48V 50/60Hz

F7: AC110V 50/60Hz (your LC1D115F7)

M7: AC220V 50/60Hz

D7: AC380V 50/60Hz

V7: AC400V 50/60Hz

B.D: DC24V

ED: DC48V

FD: DC110V

MD: DC220V

4. Terminal Variant Code (placed before voltage code)

3: Terminale a molla, per esempio. LC1D1153F7

6: Ring terminal (cable lug), per esempio. LC1D1156F7

5. Matched Thermal Relay Reference (for panel selection)

09~38A: LRD07…LRD35

40~95A: LRD33 series

115~170A: LRD43 series

205 e sopra: 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