Siemens 3RT2628-1AP65 Capacitor Contactor 33 kVAr, 400V, S0, 220V AC Coil Original Brand New

Overview

The Siemens 3RT2628-1AP65 is a high-performance capacitor contactor designed for the reliable switching of capacitive loads (AC-6b). As a specialized version of the SIRIUS 3RT2 series, this contactor is engineered to handle demanding applications in reactive power compensation systems and converter switching. Its innovative design incorporates integrated precharging resistors, which are engaged by leading auxiliary contacts to effectively limit the peak charging currents of capacitors.

This crucial feature minimizes stress on the power supply network and extends the life of the connected equipment. With a rated power of 33 kVAr at 400 V, a 220V AC coil (50 Hz) or 240V AC coil (60 Hz), and a compact S0 size, this 3-pole contactor with 1 NO + 2 NC auxiliary contacts offers a robust and efficient solution for your power control needs.

Benefits

• Extended Equipment Life: The precharging resistors significantly reduce the inrush current, protecting capacitors and other sensitive components from damaging electrical stress.
• Enhanced Network Stability: By limiting current peaks, the 3RT2628-1AP65 prevents voltage sags and disturbances, contributing to a more stable and reliable power supply network.
• High Performance and Reliability: Built to stringent IEC standards (IEC 60947, IEC 60831, etc.), this contactor ensures safe and consistent operation in industrial environments.
• Versatile Application: Ideal for both choked and unchoked capacitor switching in reactive power compensation systems, as well as for controlling converters.
• Flexible Integration: The screw terminals and size S0 form factor allow for easy and secure integration into existing control panels and electrical systems.
• Clear Status Indication: Equipped with a 1 NO + 2 NC auxiliary contact configuration, it provides essential feedback for monitoring and control circuits.

Function & Features

• Capacitor Switching (AC-6b): Specifically designed for switching capacitive loads up to 33 kVAr at 400V.
• Integrated Precharging Resistors: These resistors are switched on momentarily via leading auxiliary contacts to limit the inrush current during capacitor charging.
• 3-Pole Main Contacts: Provides reliable control over all three phases of a capacitive load.
• Coil Voltage: Operates with a control supply voltage of 220 V AC at 50 Hz or 240 V AC at 60 Hz.
• Auxiliary Contacts: Includes 1 Normally Open (NO) and 2 Normally Closed (NC) auxiliary contacts for use in control circuits.
• Screw Terminals: Ensures a secure and reliable connection for both power and control wiring.
• Compact Size S0: Optimized for space efficiency in control cabinets without compromising performance.
• Safety and Standards: Conforms to international standards including IEC 60947-1, IEC 60947-4-1, IEC 60831-1, and IEC 61921, ensuring safety and compatibility.
• Overvoltage Protection: Can be retrofitted with optional surge suppressors (RC elements, varistors, diodes) to protect the coil from opening surges.
• Short-Circuit and Overload Protection: It is essential to protect all connections (main, auxiliary, and control) using suitable fuses, circuit breakers, or overload relays, as per the technical data sheet and relevant standards.

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