Siemens 3RT2645-1AL23 SIRIUS Capacitor Contactor, 75 kVAr, 400V, 3-Pole, 230V AC Coil, S3 Size Original Brand New

Overview

The Siemens 3RT2645-1AL23 is a specialized SIRIUS 3RT26 capacitor contactor engineered for efficient and reliable switching of capacitive loads. Designed to meet the demands of reactive current compensation systems and converter applications, this size S3 contactor is capable of handling loads up to 75 kVAr at 400 V. A key feature is its innovative design with precharging resistors and leading auxiliary contacts, which effectively minimize inrush current peaks.

This crucial function protects the power supply network from negative impacts and enhances the longevity of the connected equipment. The unit includes an integrated 1 NO + 1 NC auxiliary contact for versatile control and monitoring applications, all within a robust screw terminal design.

Features and Functions

• Capacitive Load Switching (AC-6b): Specifically designed to switch capacitors in reactive power compensation systems, ensuring smooth and reliable operation.
• Precharging Resistors: Leading auxiliary contacts activate precharging resistors, which are closed before the main contacts. This action limits the peak charging current of capacitive loads, protecting the power supply and connected components.
• High Performance: Handles a capacitive load of up to 75 kVAr at 400 V, making it suitable for a wide range of industrial applications.
• Versatile Auxiliary Contacts: Comes with integrated 1 NO + 1 NC auxiliary contacts, providing flexibility for signaling, interlocking, and other control circuit functions.
• Durable Design: Features a screw terminal connection for secure and reliable wiring.
• Compact Size S3: Offers a powerful solution in a space-saving footprint, ideal for integration into control panels and systems.
• Coil Voltage: Operates with a 230 V AC coil at 50/60 Hz, compatible with standard industrial power supplies.

Benefits

• Improved Power Quality: By limiting inrush current, the contactor reduces harmonics and voltage dips on the power grid, leading to a more stable and reliable power supply.
• Extended Equipment Life: Protects capacitors and other connected equipment from the damaging effects of high inrush currents.
• Reliable Operation: Meets strict international standards (IEC 60947 series, IEC 60831-1, IEC 61921), ensuring high performance and safety.
• Easy Integration: The compact size and standard screw terminals facilitate straightforward installation and wiring into new or existing control panels.
• Flexibility: The integrated auxiliary contacts and compatibility with optional surge suppressors and additional auxiliary switches provide excellent flexibility for custom configurations.

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