Siemens SIRIUS 3RT2617-1AP03 Capacitor Contactor AC-6b, 12.5 kVAr, 400V, 230V AC Coil, 1 NO + 1 NC, Size S00 Original Brand New

Overview

The Siemens SIRIUS 3RT2617-1AP03 is a high-performance capacitor contactor from the trusted SIRIUS family, specifically engineered for switching capacitive loads (AC-6b) in reactive power compensation systems. This specialized contactor is designed to handle the unique challenges of switching capacitors, minimizing stress on the electrical system and extending the lifespan of your components. It features an intelligent design with precharging resistors and leading auxiliary contacts to effectively limit inrush current peaks, a common issue with capacitive loads. The 3RT2617-1AP03 is a 3-pole contactor with a 230V AC coil and is rated for a capacitive load of 12.5 kVAr at 400V. Its compact size S00 and robust screw terminals make it a reliable and space-efficient solution for your control panel.

Key Features & Benefit

• Optimized for Capacitive Loads: The built-in precharging resistors and leading auxiliary contacts are specifically designed to limit the inrush current, protecting both the contactor and the electrical network from damaging current spikes.
• High Performance: Capable of handling up to 12.5 kVAr at 400V, making it suitable for a wide range of power factor correction and reactive current compensation applications.
• Enhanced Reliability: By minimizing the electrical stress during switching, the 3RT2617-1AP03 ensures a longer service life for your capacitors and the contactor itself, reducing maintenance and replacement costs.
• Versatile Application: Ideal for switching both choked and unchoked capacitors in reactive current compensation systems, as well as for switching converters.
• Integrated Auxiliary Contacts: The contactor comes standard with one normally open (NO) and one normally closed (NC) auxiliary contact, providing flexibility for signaling and control circuits.
• Compliance with Standards: Manufactured to the highest international standards, including IEC 60947-1, IEC 60947-4-1, and IEC 60831-1, ensuring quality and safety.
• Easy Integration: The compact size S00 and screw terminals simplify installation and wiring in new or existing control panels.

Functionality

The Siemens 3RT2617-1AP03 capacitor contactor operates by employing a two-stage switching process. When the coil is energized, the leading auxiliary contacts close first, engaging precharging resistors in series with the main circuit. This initial connection limits the peak charging current of the capacitors. After a very short delay, the main contacts close, bypassing the resistors and providing the full current path. This innovative mechanism prevents the high inrush currents that would otherwise occur, ensuring smooth and reliable operation.

Technical Specification

• Product Number: Siemens 3RT2617-1AP03
• Type: Capacitor Contactor
• Standard: AC-6b
• Rated Power: 12.5 kVAr at 400 V
• Poles: 3-pole
• Coil Voltage: 230 V AC, 50/60 Hz
• Auxiliary Contacts: 1 NO + 1 NC
• Connection Type: Screw Terminal
• Size: S00

Safety and Protection

Proper installation is crucial for the safe and reliable operation of the 3RT2617-1AP03. It is essential to provide suitable short-circuit and overload protection for all connections, including the main, auxiliary, and control supply circuits, in accordance with IEC standards and local regulations. Surge suppressors can be added as an accessory to protect the coil from overvoltage, although this may slightly increase the contactor’s break times. For detailed information on protection and configuration, please refer to the official Siemens technical data sheets and manuals.

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