For larger types softstarters type PSTB are using thyristors capsule types. The
manufacturing type can both IXYS (black housing) and Semikron (white housing). See principal
picture below.Some examples ofthyristors and its marking
Below you find the typical types thyristor blocks used PSS and PST30..
Please not that this type thyristors has correctly mounted when tested get the correct
result.300.
A IIM P
ABB Automation Products AB, Cewe-Control
S-721 Västeras, SWEDEN
Telephone +46 00
-.. Depending type and size, these can show different values when checking them up.
