Challenges in switching DC voltages

• Crucial strategies for dealing with switching arcs in DC contactors.
• The importance of selecting the right contactors for the respective application.
• Examples of different applications, what is important when choosing the right DC contactor.

DC technology is gaining ground. Renewable energies and electromobility are just two of the key technology drivers. New challenges are emerging for switching technology, especially at high power levels:

• Depending on the level of the switched power, arcs form that can result in damage to switchgear.
• Since no zero crossing of the voltage occurs in DC voltage applications, extinguishing these switching arcs is technically challenging.

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