Rockwell Automation 1502 400 Amp Medium Voltage Contactor (Series D) - Manual (Page 6)

1-2 Contactor Product Description
1502-UM050D-EN-P – June 2013
Vacuum Bottle Description
Each vacuum bottle (Figure 1.2) consists of two contacts enclosed in a
ceramic housing: an upper contact mounted to a fixed shaft, and a lower
contact mounted to a movable shaft. A stainless steel bellows ensures the
vacuum integrity of the bottle while letting the lower contact move towards
and away from the fixed contact.
Arc Shield
Contact Wear
Indicator Line
Fixed shaft
Ceramic
Contacts
Bellows
Bearing
Movable Shaft
Arc Shield
Contact Wear
Indicator Line
Fixed shaft
Ceramic
Contacts
Bellows
Bearing
Movable Shaft
Figure 1.2 – Vacuum Bottle Cross Section