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Siemens 3RT1647-1AK61 Capacitor Contactor - 50 kVAr, 110V AC

Siemens 3RT1647-1AK61 3-pole capacitor contactor.

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ManufacturerSiemens

Part number3RT1647-1AK61

Type Capacitor Contactor

Series SIRIUS 3RT16

Poles 3

AC-6 Rating 50 kVAr @ 400V

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3-pole configuration Designed for capacitor banks AC-6 application rating Screw terminals Power factor correction

Product description

The Siemens 3RT1647-1AK61 is a 3-pole capacitor contactor designed for AC-6 applications, rated at 50 kVAr at 400V. It features a 110V AC coil (50 Hz) or 120V AC coil (60 Hz) and screw connections. This contactor is specifically designed for the controlled switching of capacitor banks in power factor correction systems.

This specialized contactor is essential for applications requiring reactive power compensation, such as in industrial facilities with large inductive loads to improve power quality and efficiency.

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Technical specifications

Type	Capacitor Contactor
Series	SIRIUS 3RT16
Poles	3
AC-6 Rating	50 kVAr @ 400V
Coil Voltage	110V AC 50Hz / 120V AC 60Hz
Terminals	Screw

Common applications

Power factor correction

Industrial power systems

Reactive power compensation

Capacitor bank switching

Compatible systems

Power factor correction systems Industrial electrical distribution Motor control centers

Also known as

Siemens SIRIUS 3RT1647-1AK61 3RT16471AK61 Siemens 110V Capacitor Contactor

Replaces / compatible with

This product has been phased out. The preferred successor is Siemens SIRIUS 3RT2636-1NF35.

Technical note

Expert tip

The 3RT1647-1AK61 is designed for AC-6 duties, which involves specific pre-charging resistors and sequencing to minimize inrush currents when switching capacitor banks.

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Frequently asked questions

What is the primary application for the Siemens 3RT1647-1AK61 capacitor contactor?

The Siemens 3RT1647-1AK61 is primarily used for switching capacitor banks in power factor correction systems. Its design is optimized for the specific electrical characteristics of switching reactive loads.