Siemens 3RT2625-1AL25 Capacitor Contactor 16.7 kVAr, 230V AC, Size S0 Original Brand New

Overview

The Siemens 3RT2625-1AL25 is a high-performance capacitor contactor designed for switching capacitive loads in reactive current compensation systems. This specialized contactor is part of the SIRIUS 3RT2 series and is engineered to handle AC-6b applications up to 16.7 kVAr at 400V. Its key feature is the integration of precharging resistors, which are engaged via leading auxiliary contacts.

This innovative design effectively limits the peak charging current, minimizing disturbances to the power supply network and ensuring reliable operation. The 3RT2625-1AL25 is ideal for use with both choked and unchoked capacitors, and is also suitable for switching converters.

Key Benefits

• Optimized for Capacitive Loads: Specifically designed to switch capacitive loads (AC-6b), protecting both the contactor and the electrical network.
• Minimizes Network Disturbances: Integrated precharging resistors limit inrush current peaks, reducing stress on the power supply and connected components.
• High Reliability: Built to IEC standards (IEC 60947, IEC 60831, etc.) for robust and dependable performance in industrial environments.
• Flexible Integration: Compact Size S0 design with screw terminals allows for easy installation and integration into existing control panels.
• Comprehensive Protection: Provides clear guidelines for protecting against short circuits, overloads, and overvoltage for all connections (main, auxiliary, and control supply).

Functions & Features

• Precharging Resistors: These are switched on via leading auxiliary contacts to limit the inrush current, protecting the capacitor and the network.
• Standard Compliance: Conforms to international standards including IEC 60947-1, IEC 60947-4-1, IEC 60947-5-1, IEC 60831-1, and IEC 61921.
• Auxiliary Contact Configuration: The basic unit includes a 4-pole front-mounted auxiliary switch with one accessible contact, and additional integrated free contacts (1 NO + 2 NC).
• Surge Suppression: Can be retrofitted with optional surge suppressors (RC elements, varistors, diodes) to dampen opening surges and protect the coil.
• Expandability: Supports the addition of lateral auxiliary switches for increased functionality, subject to permissible configuration guidelines.

Application

The Siemens 3RT2625-1AL25 is an essential component for:

• Reactive current compensation systems
• Switching choked and unchoked capacitors
• Converter switching applications
• Industrial automation and control panels

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