Schneider LC1D115F7 AC Contactor

Series: TeSys Deca (TeSys D) 3-pole AC Contactor

Model Code Explanation

LC1D: TeSys D standard contactor series

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

F: Coil voltage code → 110V AC

7: 50/60Hz universal frequency

Core Electrical Parameters

Main contacts: 3P, 3 Normally Open (3NO)

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

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

Coil: AC110V, 50/60Hz

Built-in auxiliary contacts: 1NO + 1NC

Rated impulse withstand voltage Uimp: 8kV; Utilization categories: AC-3 / AC-3e / AC-1 / AC-4

Short-time making capacity: 1260A @440V

SCCR short-circuit withstand rating: up to 100kA

Mechanical & Environmental Specifications

Overall dimension: H158mm × W120mm × D136mm; Net weight 2.5kg

Front face protection: IP20

Ambient temperature: -40℃ ~ +60℃; derating required from 60℃ to 70℃

Maximum installation altitude: 3000m

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

Maximum operating frequency: 2400 cycles/hour

End-of-Life & Replacement Information

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, mounting compatible

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

Note: 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.

Compatible Accessories

Thermal overload relay: LRD43 series (for 115A range)

Auxiliary contact block: LA1DN (for extra auxiliary contacts)

Surge suppressor: LA4DA coil suppressor (for AC coil)

Mechanical interlock: LA9D11502 (for reversing circuit)

Typical Applications

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

Application Cases of LC1D115F7 (115A, AC110V Coil)

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

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

Load: 55kW screw compressor motor, 400V 3-phase

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

Control logic: 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)

Case 2: Municipal / Plant Fire Main Pump (Star-Delta Starting)

Load: 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

Features: 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)

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

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

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

Circuit: Pressure switch / PLC + LC1D115F7 + thermal relay; compressor built-in 110V control transformer

Operating condition: Intermittent start-stop, normally <600 cycles/hour, well within rated 2400 cycles/hour; AC-3 duty

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

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

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

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

Control: 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

Case 5: Heavy-duty Belt Conveyor in Factory

Load: 55kW main drive motor for belt conveyor, heavy starting

Scheme: DOL or star-delta; some with forward-reversing function (2 pcs LC1D115F7 + mechanical interlock)

Operating condition: Heavy inrush current at startup; derating assessment required for AC-4 duty (frequent jogging & reversing); soft starter is recommended for priority while contactor serves as output switch

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

Case 6: MCC Motor Control Center Drawout Unit

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

Configuration: Standard motor starter drawer unit, circuit breaker + LC1D115F7 + thermal relay; secondary 110V control supply

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

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

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

Description: 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

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

Supplementary Selection & Operation Notes (for F7 coil)

Coil rated AC110V, DO NOT connect directly to 220V. Control transformer is required inside cabinet to output AC110V
This model is at end-of-life phase. New projects prefer replacement model LC1D115AEHE (48–130V AC/DC wide voltage, compatible with 110VAC)
For frequent start-stop, jogging and reversing (AC-4) applications, select one higher current rating or adopt soft starter to reduce contact erosion
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, Screw Terminal)

Naming Rule:

LC1D + Current Rating + Coil Code

Coil suffix:

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

Status: 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

Base Model	AC-3 Current @440V	Matched Motor @400V	Common AC Order Code (suffix 7)	DC Order Code	New Replacement (Everlink)
LC1D09	9A	4kW	LC1D09B7 / LC1D09F7 / LC1D09M7	LC1D09BD	LC1D09AEHE
LC1D12	12A	5.5kW	LC1D12B7 / LC1D12F7 / LC1D12M7	LC1D12BD	LC1D12AEHE
LC1D18	18A	7.5kW	LC1D18B7 / LC1D18F7 / LC1D18M7	LC1D18BD	LC1D18AEHE
LC1D25	25A	11kW	LC1D25B7 / LC1D25F7 / LC1D25M7	LC1D25BD	LC1D25AEHE
LC1D32	32A	15kW	LC1D32B7 / LC1D32F7 / LC1D32M7	LC1D32BD	LC1D32AEHE
LC1D38	38A	18.5kW	LC1D38B7 / LC1D38F7 / LC1D38M7	LC1D38BD	LC1D38AEHE
LC1D40	40A	18.5kW	LC1D40B7 / LC1D40F7 / LC1D40M7	LC1D40BD	LC1D40AEHE
LC1D50	50A	22kW	LC1D50B7 / LC1D50F7 / LC1D50M7	LC1D50BD	LC1D50AEHE
LC1D65	65A	30kW	LC1D65B7 / LC1D65F7 / LC1D65M7	LC1D65BD	LC1D65AEHE
LC1D80	80A	37kW	LC1D80B7 / LC1D80F7 / LC1D80M7	LC1D80BD	LC1D80AEHE
LC1D95	95A	45kW	LC1D95B7 / LC1D95F7 / LC1D95M7	LC1D95BD	LC1D95AEHE
LC1D115	115A	55kW	LC1D115B7 / LC1D115F7 / LC1D115M7	LC1D115BD	LC1D115AEHE / LC1D115AKUE
LC1D150	150A	75kW	LC1D150B7 / LC1D150F7 / LC1D150M7	LC1D150BD	LC1D150AEHE / LC1D150AKUE
LC1D170	170A	90kW	LC1D170B7 / LC1D170F7 / LC1D170M7	LC1D170BD	LC1D170AEHE / LC1D170AKUE
LC1D205	205A	110kW	LC1D205B7 / LC1D205F7 / LC1D205M7	LC1D205BD	LC1D205AEHE / LC1D205AKUE
LC1D245	245A	132kW	LC1D245B7 / LC1D245F7 / LC1D245M7	LC1D245BD	LC1D245AEHE / LC1D245AKUE
LC1D300	300A	160kW	LC1D300B7 / LC1D300F7 / LC1D300M7	LC1D300BD	LC1D300AEHE / LC1D300AKUE
LC1D410	410A	220kW	LC1D410B7 / LC1D410F7 / LC1D410M7	LC1D410BD	LC1D410AEHE / LC1D410AKUE
LC1D475	475A	250kW	LC1D475B7 / LC1D475F7 / LC1D475M7	LC1D475BD	LC1D475AEHE / LC1D475AKUE
LC1D620	620A	315kW	LC1D620B7 / LC1D620F7 / LC1D620M7	LC1D620BD	LC1D620AEHE / LC1D620AKUE