Siemens 3RT2627-1NB35 Capacitor Contactor 25 kVAr, 400V, AC-6b, 21-28V AC/DC, Size S0 Original Brand New

Overview

The Siemens 3RT2627-1NB35 is a high-performance capacitor contactor designed for the reliable switching of capacitive loads up to 25 kVAr at 400V. As a special version of the popular 3RT2 series, it is engineered to meet the stringent demands of reactive power compensation systems, ensuring efficient and safe operation. This 3-pole contactor is equipped with an integrated varistor for surge suppression and features a wide control voltage range of 21-28V AC/DC, making it highly versatile for various control circuits. Its compact Size S0 design and convenient screw terminals simplify installation.

Benefit

• Optimized for Capacitive Loads: The 3RT2627-1NB35 features unique precharging resistors that limit inrush currents, protecting both the contactor and the power supply network from damaging current spikes.
• Enhanced Network Stability: By minimizing the negative impacts of switching capacitive loads, this contactor helps maintain the stability and quality of your power grid.
• Built-in Surge Protection: The integrated varistor provides superior protection against overvoltage, extending the lifespan of the device and connected components.
• Versatile Control: The wide-range control voltage (21-28V AC/DC) allows for flexible integration into a variety of control systems, from conventional AC to modern DC-powered circuits.
• Standard-Compliant and Safe: Designed and manufactured in accordance with key international standards (IEC 60947-1, IEC 60947-4-1, etc.), ensuring high quality, reliability, and safety.
• Easy to Integrate: The compact Size S0 and screw terminal connections make it easy to install in a variety of industrial and commercial control panels.

Function

• Capacitor Switching (AC-6b): Specifically designed for switching capacitors in reactive current compensation systems, managing inrush currents up to 25 kVAr.
• Precharging Resistor Technology: Leading auxiliary contacts engage precharging resistors to limit the peak charging current of capacitive loads, a crucial function for minimizing network disturbance.
• Converter Switching: Suitable for switching converters in various applications.
• Integrated Overvoltage Damping: The built-in varistor dampens opening surges in the coil, protecting the control circuit and the contactor itself from electrical stress.
• Auxiliary Contacts: Comes with a configuration of 1 NO (Normally Open) + 2 NC (Normally Closed) auxiliary contacts, providing additional functionality for signaling and interlocking.

Technical Specification

• Product Number: 3RT2627-1NB35
• Contactor Type: Capacitor Contactor
• Rated Power (AC-6b): 25 kVAr at 400 V
• Poles: 3-pole
• Control Supply Voltage: 21-28V AC/DC, 50/60 Hz
• Surge Suppression: Integrated varistor
• Auxiliary Contacts: 1 NO + 2 NC
• Terminal Type: Screw terminal
• Size: S0
• Standards: IEC 60947‑1, IEC 60947‑4‑1, IEC 60947‑5‑1, IEC 60831‑1, IEC 61921

Standard

• IEC 60947‑1: Low-voltage switchgear and controlgear — Part 1: General rules
• IEC 60947‑4‑1: Low-voltage switchgear and controlgear — Part 4-1: Contactors and motor-starters — Electromechanical contactors and motor-starters
• IEC 60947‑5‑1: Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and switching elements — Electromechanical control circuit devices
• IEC 60831‑1: Shunt power capacitors of the self-healing type for a.c. systems having a rated voltage up to and including 1000 V — Part 1: General — Performance, testing and rating — Safety requirements — Guide for installation and operation
• IEC 61921: Power capacitors — Low-voltage power factor correction banks — Performance, testing and rating — Safety requirements — Guide for installation and operation

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