Technical FAQs

Ask a Question

Does ATS48 soft starters alone (without breakers or protection components) withstands 50kA ?

The maximum prospective short-circuit current of the soft starters ref. ATS48 will depend on the supply voltage, coordination type, components used (breaker, contactor, etc) as well as the IEC standard IEC 60947-4-2

For example, ATS48C48Q for the same supply voltage 380 V:

·  Type 1 coordination: the max prospective short circuit current value is 70 kA.
·Type 2 coordination: the max prospective short circuit current value is 50 kA.

Please refer to the Attached document for the max prospective short circuit current value (ATS48-Coordination).

The ATS 48 does not protect from short circuit fault by itself (i.e. a breaker has to be installed for short circuit protection), Please refer to the protection functions provided by the ATS 48.
Was this helpful?
What can we do to improve the information ?