Protection against condensation

SINAMICS DC MASTER units are designed in compliance with climate class 3K3 (EN 60721-3-3) without condensation.

When supplied to tropical countries, we recommend that the electrical cabinets are equipped with cabinet heating elements.
Units with coated PCBs are optionally available (option M08); these are insensitive to unfavorable environmental conditions. In order to guarantee safe and reliable operation, under all circumstances, it should be avoided that the units are commissioned with PC boards with moisture condensation.