DC contactors for energy storage systems

Schaltbau contactors ensure safety of vanadium redox flow batteries

A leading manufacturer of modular vanadium redox flow batteries for energy storage was looking for an alternative to gas encapsulated contactors.
The solution used so far led to recurring field failures resulting in system downtime.
A more robust contactor was required to improve system availability.
Contactors with reliable signal controlling were important for the system functionality.

Schaltbau DC contactors ensure safe operation by:

Being fully bi-directional: Safe disconnection of high powers irrespective of the current direction
Having high making capacity Icm up to 4,000 amps leading to increased system availability
Excellent breaking capacity: The contactors retain its full function when disconnecting high currents
Having low energy consumption and low heating thanks to sophisticated coil saving circuit
Providing higher safety due to auxiliary contacts: Mirror contact functionality IEC 60947-4-1, Annex