Siemens 3RT2636-1AV05 SIRIUS Capacitor Contactor 50 kVAr, 400V, S2 Size Original Brand New

Overview

The Siemens 3RT2636-1AV05 is a high-performance SIRIUS capacitor contactor specifically engineered for switching capacitive loads in reactive current compensation systems. Designed to meet the rigorous demands of AC-6b applications, this 3-pole contactor is rated for 50 kVAr at 400 V, making it an ideal solution for power factor correction and minimizing disturbances on the power supply network. Its key feature is the integration of precharging resistors, which are engaged via leading auxiliary contacts to effectively limit the peak charging current of capacitors. This not only protects the system from damaging current spikes but also extends the life of the connected components. The robust S2 size and screw terminals ensure a secure and reliable connection.

Key Features & Benefit

• Optimized for Capacitive Loads (AC-6b): Specifically designed for switching capacitors up to 50 kVAr at 400 V, ensuring reliable and safe operation in power factor correction applications.
• Integrated Precharging Resistors: Leading auxiliary contacts switch in precharging resistors before the main contacts close, effectively limiting inrush currents and minimizing stress on the power grid and equipment.
• Reduced Network Disturbances: By controlling inrush currents, the 3RT2636-1AV05 helps to prevent voltage sags and other negative impacts on the power supply network, leading to a more stable system.
• Robust and Reliable Design: The S2 size and durable construction provide long-lasting performance in industrial environments. Screw terminals offer a secure and easy-to-manage wiring solution.
• Versatile Application: Suitable for switching both choked and unchoked capacitors in reactive current compensation systems and for use with converters.
• Comprehensive Safety Features: The device includes 2 NC auxiliary contacts, providing flexibility for control and signaling applications. The design adheres to international safety and performance standards including IEC 60947 series, IEC 60831-1, and IEC 61921.

Function and Technical Detail

The Siemens 3RT2636-1AV05 capacitor contactor is a specialized version of the SIRIUS 3RT2 series. Its primary function is to safely switch capacitive loads by mitigating the high inrush currents that are characteristic of such loads. The contactor operates on a 400 V AC, 50 Hz control voltage.

The unique mechanism involves auxiliary contacts that close slightly before the main power contacts. These auxiliary contacts connect precharging resistors to the capacitor, allowing it to charge gradually. Once the capacitor is precharged, the main contacts close, bypassing the resistors and providing the full current path. This two-stage switching process effectively suppresses current peaks, protecting both the contactor and the electrical network.

The device comes with 2 NC auxiliary contacts for control circuit integration. For enhanced safety and system protection, all connections must be safeguarded against short circuits and overloads. The contactor is compliant with a wide range of international standards, ensuring its quality and reliability in various industrial settings. For further technical specifications, including information on short-circuit and overload protection, surge suppressors, and auxiliary contact configuration, please refer to the detailed product documentation.

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