Reduce linemen time in the field with the
easy-to-install Type 3D-73P polymer bypass switch
Eaton’s Cooper PowerE
series 3D-73P bypass
switch is designed to
provide an economical
way for bypassing and
disconnecting pole-
mounted distribution-class
reclosers and regulators,
permitting maintenance
without disturbing
continuity of service.
Ease of installation
•
Three-phase switch:
The 3D-73P switch
consists of three D-73P3
hookstick operated, bypass
switches pre-mounted
on a fiberglass crossarm
simplifying installation
•
Fiberglass crossarm:
A durable and corrosion-
resistant fiberglass crossarm
acts as a robust base while
maintaining the lightweight
properties of the switch
•
Single-point lift: A single-point,
center of gravity lifting bracket
that allows the switch to be
lifted by one lifting eye is
available as an option
•
Polymer insulators: Reduce
switch weight by 40% over
porcelain equivalents
• Maintains mechanical
strength characteristics
• Easier to install than heavier
porcelain switches
Reliability
•
UltraSIL polymer insulators:
Provide more reliable and
durable insulating option
than porcelain
• Increased insulating
performance in highly
contaminated environments
• High level of safety,
flexibility and strength,
while not being susceptible
to breakages
•
High-strength blade: Better
able to endure short-circuit
current withstand and rough
operation
•
Current transfer path: Cooler
path reduces hot-spots and
potential failure points
•
Switch latching mechanism:
Designed to provide secure
and reliable close and open
Improved field operation
•
Blade spacers: Provide secure
force on contacts, allowing for
increased withstand and short-
circuit protection by creating
a consistent and efficient
current interchange without
requiring additional force to
operate the switch
•
Lower contact: Consistent
current interchange is
independent from hinge
•
Silver-plated copper blades:
Increased efficiency of
current transfer
•
Contact surfaces:
• 600 A ratings—silver-plated
blade and tin-plated copper
contacts
• 900 A ratings—silver-plated
blade and silver-plated
copper contacts
COOPER POWER
SERIES
3D-73P polymer bypass switch
Three-phase switch
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.
Eaton
1000 Eaton Boulevard
Cleveland, OH 44122
United States
Eaton.com
Eaton’s Power Systems Division
2300 Badger Drive
Waukesha, WI 53188
United States
Eaton.com/cooperpowerseries
© 2018 Eaton
All Rights Reserved
Printed in USA
Publication No. PA008023EN / Z20511
February 2018
3D-73P bypass switch
Quality construction to ensure stable high-current capability and full thermal capacity.
Blade design
•
Secure force on contacts
• Silver-plated copper in truss-type construction
• Blade spacers in front and back of contacts for
greater short-circuit and momentary protection
•
Superior rigidity
• Minimizes side deflection
• Maintains positive alignment when closing
the switch
Lower contacts
•
Independent from hinge
•
Current interchange direct from
stationary contact to blade
•
Consistent current transfer path
reduces hot-spots
Upper contacts
•
Reliable latching mechanism
•
Blade spacers will not weaken
over time
•
Cooler running design
•
Consistent reliable alignment
•
Loadbreak hooks standard
Insulators
Lightweight UltraSIL
polymer insulators:
•
Stiff and rugged insulators
provide stable alignment
•
Superior polymer silicone
rubber material in terms
of non-wetting, resistant
to UV degradation and
surface tracking
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For Eaton’s Cooper Power series product information, visit
Eaton.com/cooperpowerseries