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Contacts
¾ High interrupting and withstand capacity
¾ Contact tips provide good wipe and roll
action and made of Silver refractory for no
stick weld resistance and cool temperature
rise
¾ Dual snap action contacts prevent flashover
and provide clean arc interruption
¾ Self locking operating mechanism employs
no magnetic holding
¾ Positive mechanical and electrical
interlocking prohibits automatic transfer to a
dead source or connecting both sources at
once
¾ Wide contact air gaps and positive “both-
off” positioning for “source to source”
isolation
¾ Inter-pole barriers to eliminate phase to
phase arc flashover
Standard Features, cont’d.
¾ Quick disconnect plugs on wire harness
¾ Status LED’s—transfer to emergency, retransfer to preferred, frequency okay, preferred and emergency
available, engine running unloaded/cooldown
¾ Easy access to AlCu field wiring terminals
¾ Easy access to control wire terminal blocks for field connections, custom configurations available
1000 Amp transfer
switch
Orderin
g
Information
LX 450 A 3 3 A 6 C A
Type Ampere Number Number Voltage Frequency Enclosure Options
Rating Phases Wires Type
450 - Auto.
A - 100 1-Single 2 - 2 Wire A - 208 5 - 50 Hertz A - Type 1 A - Standard
440 - Non-Auto. B - 200 Phase 3 - 3 Wire B - 230 6 - 60 Hertz B - Type 3R - If options are
C - 260 3-Three 4 - 4 Wire C - 380 C - Type 4/12 included, use
D - 400 Phase D - 415 D - Type 4X code from
E - 600 E - 480 Stainless options sheet
F - 800 P - Open Type
G - 1000
H - 1200
Example: Automatic transfer switch rated 100 amp, 3 phase, 3 wire,
208 volt, 60 hertz, type 4/12 enclosure, standard
Catalog number LX450A33A6CA