Siemens 3RT2625-1NF35 Capacitor Contactor AC-6b, 16.7 kVAr, 400V, S0 Size Original Brand New

Overview

The Siemens 3RT2625-1NF35 is a high-performance capacitor contactor specifically engineered for switching capacitive loads in reactive current compensation systems. This specialized contactor, part of the SIRIUS 3RT26 series, is designed to limit inrush current peaks, ensuring the stability and longevity of your power supply network. It is rated for AC-6b applications up to 16.7 kVAr at 400V, making it a robust and reliable solution for industrial and commercial power factor correction. The integrated varistor provides enhanced overvoltage protection for the coil circuit, while the screw terminals and S0 size ensure easy installation and integration into existing control panels.

Key Benefit

• Optimized for Capacitive Loads: Equipped with leading auxiliary contacts and precharging resistors, it effectively limits high inrush currents typical of switching capacitors, minimizing stress on the network and connected equipment.
• Enhanced Coil Protection: An integrated varistor protects the control supply voltage connection from damaging overvoltage surges, increasing the contactor’s lifespan and reliability.
• Versatile Control: The 95-130V AC/DC coil voltage allows for flexible integration into a wide range of control circuits.
• User-Friendly Design: The S0 size and screw terminals simplify installation and wiring, reducing setup time and effort.
• Comprehensive Auxiliary Contacts: Features 1 NO + 2 NC auxiliary contacts, providing ample options for signaling, interlocking, and control circuit integration.

Functions and Features

The 3RT2625-1NF35 contactor utilizes a special design with precharging resistors that are switched on via leading auxiliary contacts. This mechanism ensures that the capacitor is charged to a certain voltage level before the main contacts close, effectively suppressing the peak charging current. This process is crucial for maintaining power quality and preventing disturbances in the electrical network.

• Short-Circuit and Overload Protection: It is essential to provide external short-circuit and overload protection for all connections (main, auxiliary, and control supply). Refer to the technical product data sheet for specific recommendations on protecting a free-standing contactor or a complete load feeder combination.
• Overvoltage Protection: The integrated varistor provides inherent overvoltage protection for the coil. For devices without an integrated varistor, a variety of surge suppressors (RC elements, diodes, etc.) can be retrofitted.
• Auxiliary Contact Configuration: This S0 size contactor comes with a fixed configuration of 1 NO + 2 NC free auxiliary contacts, providing flexibility for control and monitoring applications.

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