Schneider LC1F400 TeSys F 3-Pole Contactor for Heavy Duty Motor Control

Product Overview

The Schneider LC1F400 is a three-pole contactor from the TeSys F series, designed for controlling large AC motors and power circuits in industrial automation. This contactor is rated for 400A operational current in AC-3 duty (motor starting) and can handle motors up to 200 kW at 400V. It features an AC coil (voltage variant as specified) and is built for high electrical durability. The TeSys F series is known for its robust construction, long mechanical life, and compliance with international standards. The LC1F400 is typically used as a main line contactor, motor starter component, or switching device for heavy loads such as compressors, crushers, and large fans.

Key Features of Schneider LC1F400

The LC1F400 incorporates silver-based contacts with arc chutes for reliable interruption of high currents. It includes one normally open and one normally closed auxiliary contact (1NO+1NC) as standard. The contactor is equipped with screw terminals for main power connections and auxiliary wiring. The coil is available in various AC voltages (e.g., 110V, 220V, 400V) with low holding power consumption to reduce heat. An optional electronic coil interface can be added for wide voltage range operation. The contactor features mechanical indicators for contact wear and a built-in coil suppression (if specified).

The device is designed for use with thermal overload relays (e.g., LR9 series) for complete motor starter assemblies. It can be mounted on a DIN rail or panel using screws. The LC1F400 has a degree of protection IP20 and can operate in ambient temperatures from -5°C to +55°C without derating. It complies with IEC 60947-4-1, UL 508, and CSA C22.2 standards. The mechanical life exceeds 5 million operations, and electrical life is rated for 500,000 operations under AC-3 duty.

Technical Specifications

• Manufacturer: Schneider Electric

• Part Number: LC1F400

• Series: TeSys F

• Number of Poles: 3 (normally open)

• Rated Operational Current (Ie): 400 A (AC-3 at

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• Rated Power (AC-3): 200 kW at 400V

• Rated Insulation Voltage (Ui): 1000 V

• Rated Impulse Withstand Voltage (Uimp): 8 kV

• Auxiliary Contacts: 1 NO + 1 NC (integral)

• Coil Voltage: AC (specify model, e.g., 110V, 220V, 400V 50/60Hz)

• Coil Consumption (holding): < 30 VA

• Terminals: Screw clamps for main and auxiliary circuits

• Mechanical Life: 5 million operations

• Electrical Life (AC-3): 500,000 operations

• Operating Temperature: -5 to +55 °C

• Degree of Protection: IP20

• Mounting: DIN rail or panel mount

• Certifications: CE, UL, CSA, CCC

Functional Description

When the coil is energized, the electromagnet attracts the moving armature, closing the three main power contacts and switching the auxiliary contacts. The arc chutes extinguish the arc when the contacts open under load. The contactor can be used for remote switching of motors, lighting, and heating circuits. For motor starting, it is typically combined with an overload relay (connected between the contactor and the motor) to provide thermal protection. The auxiliary contacts can be wired to a PLC to indicate contactor status or for interlocking with other devices.

Applications

The Schneider LC1F400 is used in heavy industrial applications such as cement plants, mining conveyors, water treatment pumps, large HVAC compressors, and metal processing machinery. It serves as a replacement contactor in existing TeSys F starter assemblies.