Increase reliability with the easy-to-use

Type D-73P polymer disconnect switch

Reduce linemen time in

the field with light, reliable,

rugged, and easy-to-install

Eaton’s Cooper Power™ series

D-73P disconnect and

bypass switches designed to

provide durable switching,

line sectionalizing and

isolation on distribution

circuits.

Reliability

•

UltraSIL™ polymer insulators:

provide more reliable and

durable insulating option than

porcelain

• Increased insulating

performance in highly

contaminated environments

• Very 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 a consistent and efficient

current interchange

•

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

Ease of installation

•

Polymer insulators: reduce

switch weight by 40% over

porcelain equivalents

• Maintains mechanical

strength characteristics

• Easier to install than heavier

porcelain switches

•

Switch base: provides

enhanced switch stability

• Rugged seven-gauge

galvanized steel keeps entire

switch stable

• Prevents switch distortion

when bolting into place

Also available in bypass, line-tap, cross-arm, and cutout disconnect

configuration (bypass and cutout disconnect shown above).

COOPER POWER

SERIES

Single-Phase Switches

D-73P Polymer Disconnect

and Bypass Switches

D-73P DISCONNECT SWITCH

Quality construction

to ensure stable high-

current capability and

full thermal capacity

Eaton

1000 Eaton Boulevard

Cleveland, OH 44122

United States

Eaton.com

Eaton's Cooper Power Systems Division

2300 Badger Drive

Waukesha, WI 53188

United States

Eaton.com/cooperpowerseries

Printed in USA

Publication No. PA008012EN

Superceedes B328-13019

June 2015

Eaton, Cooper Power and UltraSIL are

valuable trademarks of Eaton in the U.S. and

other countries. You are not permitted to use

the Eaton trademarks without the prior written

consent of Eaton.

For Eaton's Cooper Power series product

information, call 1-877-277-4636 or

visit: www.Eaton.com/cooperpowerseries

Upper contacts

•

Reliable latching mechanism

•

Blade spacers will not weaken over time

•

Cooler running design

•

Consistent reliable alignment

•

Loadbreak hooks standard

Lower contacts

•

Independent from hinge

•

Current interchange direct from stationary

contact to blade

•

Consistent current transfer path reduces

hot-spots

Blade design

•

Secure force on contacts

• Silver-plated copper in truss-

type construction

• Blade spacers in front and

back of contacts

•

Superior rigidity

• Minimizes side deflection

• Maintains positive

alignment when closing the

switch

Insulators

Light weight UltraSIL™ polymer insulators

• Reduces effort needed for mounting

• Stiff and rugged insulators provide stable alignment

• Superior polymer silicone rubber material in terms of non-

wetting, resistant to UV degradation and surface tracking

Switch base

•

Rugged seven-gauge steel

base and backstrap

• Dead-ending hole for

conductor at each end

• Rigidity of base prevents

distortion/twisting during

installation