Schneider LC1D38 TeSys‑D 3‑Pole Motor Contactor, 38A AC‑3 Rated Industrial DIN‑Rail Contactor

The Schneider LC1D38 is a heavy-duty three-pole power contactor from Schneider’s mature TeSys-D product family, specially developed for low-voltage motor control and high-load industrial switching applications. Equipped with one normally open and one mirror-type normally closed auxiliary contact, this reliable switching component serves as a core control unit for standard cabinet automation systems and industrial power distribution setups, widely implemented in mechanical manufacturing, HVAC and water treatment projects.

Built to handle medium-to-heavy industrial loads, the Schneider LC1D38 features a 38A AC-3 rated operational current, perfectly catering for high-power three-phase asynchronous motor control requirements. Adopting high-strength flame-retardant housing and precision screw-clamp terminal design, this contactor delivers exceptional mechanical durability and environmental tolerance. It is extensively used for controlling large industrial fans, high-flow water pumps, heavy-duty conveyor lines, industrial compressors and various high-power automated processing equipment.

Schneider LC1D38 TeSys‑D 38A Three‑Pole Industrial Motor‑Switching Contactor

1. Mechanical Structure, Installation and Environmental Adaptability

Compact Footprint and Flexible Mounting Options

Maintaining a space-efficient compact form factor, the Schneider LC1D38 comes with dimensional specifications of 45mm width, 85mm height and 92mm depth, with a lightweight net weight of just 0.44kg. It supports dual installation solutions, including standard DIN rail mounting and direct screw panel fixation, allowing flexible and orderly layout inside compact control cabinets. This versatile design suits OEM equipment assembly and standardized industrial cabinet configuration perfectly. Featuring front-side IP20 protection, the unit prevents accidental touch of live internal components and resists dust accumulation, securing safe and stable long-term operation in regular industrial workshop environments.

Shock and Vibration Resistance with Broad Temperature Tolerance

The LC1D38 utilizes premium UL94-V1 flame-retardant plastic casing capable of resisting 850°C high-temperature combustion, offering robust defense against mechanical vibration, sudden impact shock and prolonged thermal aging. Its control coil sustains full-power stable operation across -40°C to 60°C without current derating, and can operate conditionally up to 70°C with proper load adjustment. Adaptable to diverse harsh working conditions, it functions steadily under 5% to 95% non-condensing humidity and supports installation altitudes up to 3000 meters above sea level, fully compliant with global industrial site environmental standards.

2. Electrical Parameters and Switching Performance

Main Circuit Rated Specifications

Equipped with three fully normally open main power poles, the Schneider LC1D38 provides a 38A AC-3 operational current at 440V, with a maximum thermal steady-state current of 50A at 60°C ambient temperature. It boasts a 690V rated insulation voltage and 6kV impulse withstand voltage, strictly conforming to IEC 60947-4-1 industrial safety regulations. In practical industrial scenarios, this contactor reliably drives 18.5kW three-phase motors at 380/440V and supports 22kW high-power motor operation under 500–690V power supply. Its excellent inrush current resistance effectively absorbs instantaneous motor startup surges and frequent heavy load impacts, maintaining consistent operational stability.

Auxiliary Contact Configuration and Service Life

Integrated with one NO and one mechanically interlocked NC mirror auxiliary contact, the LC1D38 enables real-time equipment running status feedback, electrical interlock logic and safety loop control for automated systems. It achieves 15 million mechanical operation cycles and 2 million electrical switching cycles under standard AC-3 load conditions, ensuring long-term reliable service for continuous production equipment. Designed with universal screw-clamp terminals, it matches both solid and flexible copper wires. The recommended tightening torque is 1.7N·m for control circuits and 2.5N·m for main power circuits to guarantee stable and secure wiring connection.

3. Certification Standards and Industrial Application Scenarios

Global Certifications and Anti-Interference Design

Fully compliant with IEC 60947-4-1, UL 60947-4-1 and CSA C22.2 NO 14 international industrial norms, the LC1D38 obtains multiple authoritative global certifications including CCC, UKCA, EAC, UL and marine certification. A built-in bidirectional surge suppression structure eliminates electromagnetic interference generated during coil de-energization, effectively protecting surrounding low-voltage control modules and circuit components. A complete lineup of AC coil voltage options covers nearly all mainstream control voltage specifications for global industrial automation and HVAC equipment.

Industrial Application Scope

Widely deployed in industrial automation, power control and HVAC systems, the LC1D38 undertakes stable start-stop control for large industrial ventilation units, high-flow water pump stations, heavy-load conveyor production lines, automated packaging machinery and high-power air compressors. When paired with thermal overload relays, it forms a complete integrated motor control and protection assembly for PLC-based control cabinets. With a maximum switching frequency of 3600 cycles per hour, it adapts to frequent startup-shutdown working modes and supports long-term unattended stable operation of industrial production equipment.

Schneider LC1D38 Optional Voltage Suffix Models: LC1D38B7C, LC1D38CC7C, LC1D38D7C, LC1D38E7C, LC1D38F7C, LC1D38M7C, LC1D38P7C, LC1D38Q7C, LC1D38U7C

LC1D38 Full Suffix Voltage Parameter List

All 7C-series suffix models support 50/60Hz dual-frequency operation, compatible with global industrial power supply standards:

• LC1D38B7C: AC 24V control coil voltage, 50/60Hz

• LC1D38CC7C: AC 36V control coil voltage, 50/60Hz

• LC1D38D7C: AC 42V control coil voltage, 50/60Hz

• LC1D38E7C: AC 48V control coil voltage, 50/60Hz

• LC1D38F7C: AC 110V control coil voltage, 50/60Hz

• LC1D38M7C: AC 220V control coil voltage, 50/60Hz (most widely used industrial specification)

• LC1D38P7C: AC 230V control coil voltage, 50/60Hz

• LC1D38Q7C: AC 380V control coil voltage, 50/60Hz

• LC1D38U7C: AC 240V control coil voltage, 50/60Hz