CONTACTRON ELR HDC on the DIN rail

Protecting, monitoring, and switching of high DC loads

The compact CONTACTRON ELR HDC DC circuit breaker with hybrid technology and intuitive parameterization from Phoenix Contact ensures sustainable, efficient, and safe operation of high DC loads.

Your advantages

  • Efficient operation with highly innovative hybrid technology for protection, monitoring, and switching functions in DC grids
  • Sustainable increase in efficiency through energy recovery (recouperation) in DC grids
  • Overall width of only 85 mm saves space in control cabinets
  • Optimal user-friendliness and flexibility resulting from intuitive configuration with clipx ENGINEER and easy communication via IO-Link interface
  • Avoidance of current peaks during switching with the integrated pre-charging function

What is unique about CONTACTRON ELR HDC? In order to operate an industrial DC grid, switching devices that master its special challenges, such as arc-free switching for example, are required at the DC branches. With CONTACTRON ELR HDC, Phoenix Contact offers one of the first multifunctional DC circuit breakers on the market.

Topology: Possible structure of an industrial DC grid

Placement of ELR-HDC on DC branches in industrial DC grids

ELR HDC DC circuit breaker

Main features and functions at a glance

We offer you the compact DC circuit breaker with hybrid technology and intuitive parameterization. Protect, monitor, and switch high DC loads with data logging, network capability, and sustainable efficiency increases through energy recovery.

  • Overall width: 85 mm
  • Operating current: 10 A ... 55 A
  • Communication interfaces: IO-Link, DIO
  • Operating voltage: 0 V ... 810 V
  • Protection against overcurrent and overvoltage/undervoltage
  • Intuitive configuration with clipx ENGINEER
  • Integrated pre-charging for intermediate circuits
  • All-position electrical isolation with relay

CONTACTRON ELR HDC: Protect, monitor, and switch high DC loads without any electric arcs

Industrial automotive environment with maintenance personnel

Industrial DC grid in the automotive industry

Direct current as a key technology in the automotive industry

In the automotive industry, direct current is considered the key technology of the future and large German companies are pioneers in its integration. Protecting, monitoring, and switching DC sectors to an existing DC infrastructure are technical challenges – and Phoenix Contact already has an answer.

The CONTACTRON ELR HDC DC circuit breaker was developed for exactly these tasks. It monitors operating current and voltage and, with its pre-charging function, prevents current peaks when switched on. In the event of an overcurrent, there is a three-stage shutdown.

DC grids in building automation

Application in building automation - DC grids

DC grids in building automation

Integrating direct current into building automation also requires innovative switching and protective devices. Handling DC loads, especially pre-charging and switching, and monitoring voltage and current are crucial. Extremely short shutdown times improve operational safety in the event of errors. Energy efficiency in the overall system is increased by reducing the number of energy conversions (e.g., AC/DC). Direct DC feed-in (e.g., when using photovoltaic systems) also reduces energy losses.

Employees walking through an industrial plant that is powered by DC

DC power grids in industry

DC power grids in industry are becoming increasingly important on the road to more sustainable production. Phoenix Contact is committed to the safe use of DC technology and is researching comprehensive DC-based smart grids together with other companies. Learn why direct current is the industrial energy system of the future and what it has to do with sustainability.