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Circuit breaker VD4

Did you know…
…a medium voltage circuit breaker helps viewers watch a TV show? 

Much of the world takes for granted that a flick of a switch or press of a button turns on the lights, starts up a computer, engages the EV charger, without ever thinking about where this electricity comes from, or how it gets delivered.

The circuit breaker VD4 from ABB plays a critical role in the energy distribution networks in over 100 countries to help bring power to homes, businesses, and the infrastructure that keeps the world running. Placed in utilities, energy generation and renewables applications, or in energy distribution substations in cities, circuit breakers ensure the entire energy distribution network remains safe and reliable. These circuit breakers control and protect electrical systems from damage by interrupting and safely re-establishing a disrupted current flow. Damage can be caused by over currents - the overload through lightning or malfunctioning electric equipment or a short circuit in the system.

As an example, VD4 circuit breakers installed in a data center provide a secure power flow so that you can sit comfortably on your couch with a bowl of popcorn, enjoying your favorite show on your favorite streaming platform. Medium voltage circuit breakers are installed in data centers around the world to ensure the highest data availability. In a typical data center hosting 130,000 servers, a minimum of five circuit breakers protect the network. If a power interruption occurs, within milliseconds a circuit breaker isolates the section of the network at risk to safeguard the energy flow.

The VD4 has been the market benchmark for more than 35 years and today, with over 2 million units installed, it keeps electricity equipment and networks safe and reliable in over 100 countries.

Today, the increasing demand for energy and the rise in renewable energy sources are significantly changing energy distribution and VD4 circuit breakers continue to support a safe, smart and sustainable electrified world.

Key facts:

  • Over 2 million installed in more than 100 countries
  • Available for voltage from 12 kV to 46 kV and short-circuit currents up to 63 kA
  • Reacts to power failures in milliseconds

Discover more about Circuit breaker VD4