Filter
Top Products
INSTALLATION (continued)
1 --- 4
maintenance
handle
left side of
transfer switch
clip
Emergency source
contact shaft hub
Normal source
contact shaft hub
J–design 150–600 amp
Figure 1-6. Maintenance handle on 150–600 amp.
J–design transfer switches. Hubs shown with Normal
contacts closed & Emergency open.
handle
hub
UP opens the
Emergency source
contacts
DOWN closes the
Emergency source
contacts
frame
UPPER SHAFT
Figure 1-7. Emergency (upper shaft) operation
on 150–600 amp. J–design transfer switches.
handle
hub
UP closes the
Normal source
contacts
DOWN opens the
Normal source
contacts
frame
LOWER SHAFT
Figure 1-8. Normal (lower shaft) operation
on 150–600 amp. J–design transfer switches..
maintenance
handle
left side of
transfer switch
clips
Emergency source
contact shaft hub
Normal source
contact shaft hub
lobes on weights
prevent both
N&Econtacts
from being
closed at the
same time
H–design 800–1200 amp
Figure 1-9. Maintenance handle on 800–1200 amp.
H–design transfer switches. Hubs s hown with
Normal contact s closed & Emergency open.
handle
hub
UP opens the
Emergency source
contacts
DOWN closes the
Emergency source
contacts
frame
UPPER SHAFT
Figure 1-10. Emergency (upper shaft) operation
on 800–1200 amp. H–design transfer switches.
handle
hub
UP closes the
Normal source
contacts
DOWN opens the
Normal source
contacts
frame
LOWER SHAFT
Figure 1-11. Normal (lower shaft) operation
on 800–1200 amp. H–design transfer switches..