Siemens 3RT2626-1AV05 SIRIUS Capacitor Contactor 20 kVAr, 400V, Size S0 Original Brand New

Overview

The Siemens 3RT2626-1AV05 SIRIUS capacitor contactor is a specialized device engineered for the safe and efficient switching of capacitive loads. Part of the SIRIUS 3RT26 series, this contactor is designed to handle AC-6b applications up to 20 kVAr at 400V.

It is a robust, 3-pole device featuring a 400V AC, 50 Hz control voltage, with a standard configuration of 1 NO and 2 NC auxiliary contacts. The unit utilizes reliable screw terminals for secure wiring and has a compact Size S0 footprint, making it ideal for integration into various control panels and reactive power compensation systems.

Key Features & Function

• Capacitor-Specific Design: The 3RT2626-1AV05 is a dedicated capacitor contactor. Its core function is to switch capacitive loads, such as those found in power factor correction systems, in accordance with IEC 60947-4-1 (AC-6b).
• Pre-charging Resistors: A key characteristic of this contactor is the inclusion of pre-charging resistors, which are engaged via leading auxiliary contacts before the main contacts close. This mechanism effectively limits the inrush current spikes that are typical when switching capacitive loads, thereby reducing stress on the capacitors and the power supply network.
• Safety and Reliability: By minimizing peak charging currents, the 3RT2626-1AV05 helps protect the entire system from negative impacts and potential damage.
• Auxiliary Contacts: This model comes with a standard configuration of 1 Normally Open (NO) and 2 Normally Closed (NC) auxiliary contacts. These contacts are crucial for status indication, interlocking, and other control circuit functions.
• Compact Size: The Size S0 form factor allows for space-saving installation in control cabinets.
• Screw Terminals: The use of screw terminals ensures a simple and secure connection for both main and auxiliary circuits.

Benefits

• Enhanced System Protection: The pre-charging resistors prevent damaging inrush currents, extending the lifespan of capacitors and other connected equipment.
• Improved Power Quality: By ensuring a smooth switching process, the contactor helps maintain a stable and reliable power supply network.
• Cost-Effective Solution: A single, purpose-built device simplifies the design of power factor correction systems and reduces the need for complex, multi-component solutions.
• Easy Integration: The standardized Size S0 and screw terminals make installation and maintenance straightforward.
• Compliance with Standards: Conforms to key international standards for low-voltage switchgear, ensuring reliability and safety in various industrial applications.

Applications

• Reactive Power Compensation: Ideal for switching choked or unchoked capacitors in power factor correction and reactive current compensation systems.
• Converter Switching: Can be used to switch converters and other equipment with capacitive characteristics.

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