TeSys D power contactor AC3 25A 3P 1NO 1NC 24VAC coil LC1D25B7

Power contactor – reliable motor control

This 3-pole TeSys D power contactor from Schneider Electric is a robust solution for controlling motors in a wide range of industrial and construction applications. Designed to operate with AC-3 loads up to 11 kW at 400V, it provides efficient and safe circuit switching. The rated operating current of 25A guarantees stable operation even under higher loads.

Design and application

The LC1D25B7 contactor features screw connection of the main contacts, making installation and wiring easier. It has one normally open (NO) and one normally closed (NC) auxiliary contact, allowing integration with various control and protection systems. The 24VAC coil voltage makes the contactor compatible with popular low-voltage control systems. It can be used in safety applications thanks to the integrated auxiliary contacts in a mirrored configuration (NO+NC).

Advantages and benefits for installers and users

• High reliability: TeSys D contactors are known for their long service life and resistance to environmental conditions, resulting in minimal downtime and maintenance costs.
• Compact dimensions: Dimensions of 85 x 45 x 92 mm allow for easy installation even in tight switchgear spaces.
• Versatility: Can be used in various applications – from buildings to industrial plants, mining or wastewater management.
• Compliance with standards: Meets the requirements of IEC60335-1, ensuring safe use in domestic installations, heating, ventilation and air conditioning systems.
• Easy identification: Short catalog number with included rated current simplifies the selection of the appropriate contactor.
• Access to documentation: Technical documentation available online via QR code speeds up the installation and servicing process.
• Mechanical endurance: Provides extremely high mechanical endurance – up to 15 million switching cycles and 3600 cycles/h, which is important in applications requiring frequent switching.
• Integrated auxiliary contacts: Standard equipped with mirrored auxiliary contacts (NO+NC) allow direct use of the contactor in safety circuits according to IEC standard. Auxiliary contacts are adapted to signals with a minimum current of 1 mA, allowing them to be connected directly to PLCs.

Additional information: rated operating current for AC-4 at 400V is 12A, and rated power for AC-4 also at 400V is 5.5 kW. Rated operating current Ie for AC-1 at 400V is 40A.