Schneider LC1D25 TeSys‑D 3‑Pole Motor Contactor, 25A AC‑3 Rated Industrial DIN‑Rail Contactor

The Schneider LC1D25 is a durable three-pole power contactor within Schneider’s mature TeSys-D series, tailored for low-voltage motor regulation and medium-heavy load switching in diverse industrial scenarios. Featuring one normally open and one mirror-type normally closed auxiliary contact, this reliable switching component acts as a core control unit for standard cabinet automation and industrial power distribution systems. It is widely adopted in mechanical processing workshops, HVAC ventilation systems, water treatment projects and medium-scale automated production lines across various industries.

Engineered to handle stable medium-heavy operational loads, the Schneider LC1D25 delivers a 25A AC-3 rated working current, perfectly catering to the control requirements of common medium-power three-phase asynchronous motors. Equipped with industrial-grade flame-retardant housing and precision screw-clamp terminal structure, this contactor boasts outstanding mechanical stability and excellent environmental tolerance. It is commonly deployed to operate medium-large industrial fans, high-flow water pump units, medium-sized conveyor lines, automated packaging equipment and various medium-power industrial processing machinery.

Schneider LC1D25 TeSys‑D 25A Three‑Pole Industrial Motor‑Switching Contactor

1. Mechanical Structure, Installation and Environmental Adaptability

Compact Footprint and Flexible Mounting Options

Adopting a space-saving industrial casing design, the Schneider LC1D25 features accurate dimensional parameters of 45mm width, 85mm height and 101mm depth, with a net weight of only 0.53kg. It supports two universal installation methods, including standard DIN rail mounting and direct screw panel fixing, enabling flexible and orderly layout in limited cabinet spaces. This compact structure is well-suited for OEM equipment assembly and standardized industrial cabinet configuration. With front IP20 protection grade, the device effectively prevents accidental contact with live internal terminals and resists external dust accumulation, ensuring safe, trouble-free and long-term stable operation in conventional industrial workshop environments.

Shock and Vibration Resistance with Broad Temperature Tolerance

The LC1D25 utilizes premium UL94-V1 flame-retardant plastic housing that withstands 850°C high-temperature combustion, providing robust defense against daily mechanical vibration, instantaneous impact shock and long-term thermal aging. Its control coil maintains full-power stable operation within the temperature range of -40°C to 60°C without current derating, and supports conditional operation up to 70°C with proper load adjustment. Highly adaptable to complex industrial conditions, it operates steadily in 5% to 95% non-condensing humidity environments and works reliably at installation altitudes up to 3000 meters above sea level, fully compliant with global industrial environmental standards.

2. Electrical Parameters and Switching Performance

Main Circuit Rated Electrical Specifications

Configured with three normally open main power poles, the Schneider LC1D25 provides a 25A AC-3 operational current at 440V, with a maximum thermal steady-state current of 40A under 60°C ambient temperature for resistive loads. It features a 690V rated insulation voltage and 6kV impulse withstand voltage, strictly conforming to IEC 60947-4-1 international industrial safety regulations. In practical industrial application, this contactor stably drives 11kW three-phase motors at 380/440V and supports 15kW motor operation under 500–690V power supply. Its excellent inrush current resistance effectively absorbs instantaneous motor startup surges and frequent medium-heavy load impacts, maintaining consistent operational stability for medium-power industrial equipment.

Auxiliary Contact Configuration and Service Lifespan

Integrated with one NO and one mechanically interlocked NC mirror auxiliary contact, the LC1D25 enables real-time equipment running status feedback, electrical interlock setup and practical safety loop control for automated systems. It achieves 30 million mechanical operation cycles and 1.65 million electrical switching cycles under standard AC-3 load conditions, ensuring durable service life for continuous medium-heavy production equipment. Designed with universal screw-clamp terminals compatible with 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 firm, anti-vibration wiring connection for long-term field operation.

3. Certification Standards and Industrial Application Scenarios

Global Certifications and Anti-Interference Performance

Fully compliant with IEC 60947-4-1, UL 60947-4-1 and CSA C22.2 NO 14 international industrial norms, the LC1D25 holds multiple authoritative global certifications including CCC, UKCA, EAC, UL and marine certification. The built-in coil surge suppression structure eliminates electromagnetic interference generated during coil de-energization, effectively protecting surrounding low-voltage control modules and precision circuit components. A complete lineup of AC coil voltage options covers nearly all mainstream control voltage specifications for global industrial automation and HVAC mechanical equipment.

Industrial Application Scope

Widely applied in medium-load industrial automation, building power control and HVAC systems, the LC1D25 undertakes stable start-stop control for large industrial ventilation units, high-flow water pump stations, medium-sized conveyor production lines, heavy-duty packaging machinery and medium-power air compressors. When paired with thermal overload relays, it forms an integrated motor control and protection assembly for standard PLC control cabinets. Supporting 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 medium-heavy industrial processing equipment.

Schneider LC1D25 Optional Voltage Suffix Models: LC1D25B7C, LC1D25CC7C, LC1D25D7C, LC1D25E7C, LC1D25F7C, LC1D25M7C, LC1D25P7C, LC1D25Q7C, LC1D25U7C

LC1D25 Full Suffix Voltage Parameter List

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

• LC1D25B7C: AC 24V control coil voltage, 50/60Hz

• LC1D25CC7C: AC 36V control coil voltage, 50/60Hz

• LC1D25D7C: AC 42V control coil voltage, 50/60Hz

• LC1D25E7C: AC 48V control coil voltage, 50/60Hz

• LC1D25F7C: AC 110V control coil voltage, 50/60Hz

• LC1D25M7C: AC 220V control coil voltage, 50/60Hz (most widely used industrial specification)

• LC1D25P7C: AC 230V control coil voltage, 50/60Hz

• LC1D25Q7C: AC 380V control coil voltage, 50/60Hz

• LC1D25U7C: AC 240V control coil voltage, 50/60Hz