Siemens 3RT2617-1AV03 Capacitor Contactor 12.5 kVAr, 400V AC, Size S00 Original Brand New

Overview

The Siemens 3RT2617-1AV03 is a specialized capacitor contactor from the SIRIUS 3RT2 series, engineered for the demanding task of switching capacitive loads. Designed for use in reactive current compensation systems and with converters, this robust 3-pole contactor is rated for 12.5 kVAr at 400 V and features a 400 V AC, 50/60 Hz control supply voltage. Its key feature is the integration of leading auxiliary contacts that switch on precharging resistors. This innovative design effectively limits the high inrush current associated with capacitive loads, minimizing negative impacts on the power supply network and extending the lifespan of both the contactor and the connected capacitors.

Benefit

• Extended Equipment Lifespan: By effectively limiting peak charging currents, the 3RT2617-1AV03 protects connected capacitors and other system components from stress, ensuring longer service life.
• Enhanced Network Stability: The precharging resistors minimize electrical disturbances on the power supply network, leading to more stable and reliable operation.
• Reliable Performance: Built to stringent international standards (IEC 60947 series, IEC 60831-1, IEC 61921), this Siemens contactor offers proven reliability and safety.
• Flexible Integration: The size S00 form factor and screw terminals allow for easy and secure integration into a variety of control panels and systems.
• Built-in Auxiliary Contacts: Includes 1 NO + 1 NC auxiliary contacts, providing flexibility for signaling and control circuit integration.

Function

The 3RT2617-1AV03 operates by switching on precharging resistors via leading auxiliary contacts just before the main contacts close. This action effectively damps the initial high-frequency current peak that occurs when a capacitor is connected to a power source. Once the capacitor is charged, the main contacts close, bypassing the resistors and allowing the full load current to flow. This sequential switching mechanism, specifically designed for AC-6b loads, prevents transient overcurrents that can damage both the capacitors and the power distribution system.

Technical Detail

• Product Number: Siemens 3RT2617-1AV03
• Product Type: Capacitor Contactor
• Rated Power (AC-6b): 12.5 kVAr at 400 V
• Number of Poles: 3-pole
• Control Supply Voltage: 400 V AC, 50/60 Hz
• Auxiliary Contacts: 1 NO + 1 NC
• Terminal Type: Screw Terminal
• Size: S00
• Standards: IEC 60947-1, IEC 60947-4-1, IEC 60947-5-1, IEC 60831-1, IEC 61921
• Function: Switching capacitive loads with precharging resistors.

Protection and Accessories

The contactor requires proper protection against short circuits, overloads, and overvoltage. Users should consult the technical data sheet and configuration manuals for detailed guidance on protecting main, auxiliary, and control circuits. Overvoltage protection for the coil circuit can be enhanced with optional accessories such as RC elements, varistors, or diodes, which must be ordered separately.

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