Chattering Causes For a Contactor/Starter

Issue:
Chattering or loud humming sound in a contactor or starter

Product Line:
NEMA Contactors and Starters, IEC Contactors

Environment:
8502/8536 Type S Contactors and Starters, 8903L/LX and Type S Lighting Contactors, Tesys K, Tesys D, Tesys Giga Contactors

Cause:
Identifying cause of chattering

Resolution:
Chatter in a starter can be caused by poor contacts in the control circuit, a chattering input device and low voltage.

Released for: Schneider Electric Canada