Schneider Electric LC1F400X7 TeSys F contactor

The LC1F400X7 is a high-current AC contactor from Schneider Electric's TeSys F series, featuring a 400A rated current and a control coil rated for 380-415V AC 50Hz. It is a core component for controlling and protecting large three-phase motors (typically in the 200kW range), widely used in heavy industry for its high reliability, long life, and modular design.

Here is the professional English translation of the product description for the Schneider Electric LC1F400X7 contactor:

LC1F400X7 Schneider Electric Contactor Description

The LC1F400X7 is an AC Contactor from Schneider Electric's TeSys F series.

Detailed Description:

Core Identity: AC Contactor

Its primary function is the remote or automatic switching of high-power AC circuits, especially for starting, stopping, and reversing three-phase motors.

It is essentially an electromagnetically operated switch. When the coil is energized, the generated electromagnetic force pulls in the internal contacts, closing the main power circuit. When the coil is de-energized, the contacts open the main circuit via spring return.

Series: TeSys F

TeSys F is a highly classic and widely used frame-type contactor series from Schneider Electric.

Renowned for its high reliability, ruggedness, modular design, and ease of installation and maintenance.

Suitable for various applications requiring motor control and power distribution in industry, infrastructure, and building automation.

Offers a very wide current range (from 9A to 800A) and multiple accessory options.

Model Breakdown: LC1F400X7

LC1F: Standard model prefix for TeSys F series contactors.

400: Indicates the contactor's rated operational current (Ie) is 400 Amperes. This is the continuous current it can carry at the specified operational voltage (typically 400V/415V AC) under AC-3 duty (starting and switching off squirrel-cage asynchronous motors during running). This is the model's core specification.

X7: This suffix typically denotes the control coil voltage specification. "X7" specifically refers to:

AC Coil

Voltage: 380V - 415V AC

Frequency: 50Hz (Some interpretations suggest X7 may be compatible with 50/60Hz, but it is primarily labeled for 50Hz; actual compatibility should be verified in specific documentation). This is the voltage required to power the contactor's electromagnetic coil to operate.

Key Features & Technical Parameters:

Rated Operational Current (Ie): 400A (AC-3, 400V)

Number of Poles: Typically 3 poles (for controlling three-phase power). TeSys F series also has 4-pole models, but LC1F400 is standardly 3-pole.

Rated Insulation Voltage (Ui): Typically 690V or 1000V.

Rated Operational Voltage (Ue): Typically up to 690V AC or higher.

Utilization Categories:

AC-3: Starting and switching off squirrel-cage asynchronous motors during running (most common motor control category).

AC-1: Non-inductive or slightly inductive loads, resistance furnaces.

AC-2: Starting, plugging, and reversing of slip-ring asynchronous motors.

Other categories like AC-4 may apply, but their specific ratings should be confirmed in the product catalog.

Electrical Endurance: Typically several hundred thousand to over a million operations under AC-3 duty.

Mechanical Durability: Typically several million to over ten million operations.

Mounting: Standard rail mounting (e.g., 35mm DIN rail) or screw mounting.

Modular Design: Easily accommodates various accessories, such as:

Auxiliary Contact Blocks (F series): Add extra Normally Open (NO) or Normally Closed (NC) contacts for control circuit signaling.

Mechanical Interlock: Ensures interlocking between two contactors (prevents simultaneous closure for forward/reverse).

Time Delay Modules: Provide ON-delay or OFF-delay functions.

Surge Suppression Modules: Protect the coil control circuit.

Terminal Covers: Enhance safety (control terminals).

Terminal Shutters: Enhance safety (main power terminals).

Operation Counters: Record the number of operations.

Typical Applications:

Controlling the start/stop of three-phase squirrel-cage asynchronous motors with rated power typically in the ~200kW to ~250kW range (depending on voltage, motor efficiency, and starting method; roughly corresponds to 200-220kW motors at 400V).

Motor control for large fans, pumps, compressors, conveyors, mixers, crushers, and other heavy industrial equipment.

Capacitor switching in power distribution systems (applicable category and ratings must be confirmed).

Other applications requiring remote or automatic control of high-current AC loads.

Key Advantages:

High Current Capacity: 400A rating meets demands of large equipment.

High Reliability: Proven TeSys F series design, built rugged.

Long Electrical & Mechanical Life: Reduces maintenance and replacement frequency.

Modularity & Flexibility: Extensive range of accessories meets diverse control logic and protection needs.

Ease of Installation & Maintenance: Clear markings, simple accessory mounting.

Global Recognition: Complies with numerous international standards (e.g., IEC, UL, CSA).