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Switchsync™ PWC600

Latest generation of point-on-wave controllers 

Controlled switching is used for elimination of harmful electrical transients upon planned switching of mainly capacitor banks, shunt reactors and power transformers. The method is also gaining acceptance for reenergizing of EHV transmission lines, and replacing traditional pre-insertion resistors. Since 1986, thousands of Switchsync™ controllers have been delivered all over the world. 

Switchsync PWC600 is ABB’s latest generation of point-on-wave controllers, based on the well-proven Relion® platform of protection and control products. Offering the full functionality and reliability of previous Switchsync products, it additionally includes Ethernet interfaces, which support modern communication protocols such as IEC 61850, electronic voltage and current transducers, and enhanced functionality for the user. 

Switchsync PWC600 is designed for single-pole operated circuit breakers, controlling each pole to close and/or open at the point on wave that is optimal for the switched load, the circuit breaker, or power quality. It compensates for variations in temperature, control voltage, idle time, drive energy, and for drift in circuit breaker mechanical properties. A local human/machine interface (HMI) allows direct access to settings and operation data while web interface enables online viewing and downloading of operation. It also includes a library of ABB circuit breakers containing all relevant data for optimal controlled switching performance and condition monitoring

ABB’s high-voltage circuit breakers are well suited for controlled switching featuring stable operating times as well as steep and stable dynamic dielectric withstand capability. 


Why ABB?

  • Local and global support on controlled switching technology
  • More than 25 years of experience and thousands of Switchsync controlllers installed in various applications and environments

Switchsync™ Controller

Main Application

Controls Circuit Breaker Operations

Circuit Breaker Operation

IEC 61850 compliance


Shunt capacitor banks, shunt reactors, power transformers, transmission lines, cables

Open and close


Previous Switchsync Controller models


Power transformers




Uncompensated transmission lines




Shunt capacitor banks, shunt reactors

Open and close



Shunt capacitor banks

Open and close



Shunt capacitor banks, shunt reactors, power transformers

Open and close



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