D-73P disconnect and bypass
switches
Contents
Description Page
D-73P disconnect switch ............................................................... 2
D-73P3 bypass switch ................................................................. 5
D-73P-CD cutout disconnect switch ...................................................... 9
D-73P-LT distribution-class line tap disconnect switch ....................................... 10
D-73P-VS distribution-class V-style crossarm switch ......................................... 11
D-73P-TS distribution-class in-line disconnect switch ........................................ 15
Switches
Catalog Data
CA0 08005EN
Effective April 2016
Supersedes June 2015
COOPER POWER
SERIES
D-73P disconnect switch
Eaton has set the new standard of excellence for polymer
distribution-class disconnect switches with the introduction of its
Cooper Power™ series UltraSIL™ polymer-insulated disconnect
switches. Eaton's Cooper Power series D-73P distribution-class,
single throw disconnect switch provides a durable, rugged light
weight switch for line sectionalizing or isolating equipment
on distribution circuits up to 38 kV. These switches are quality
constructed to ensure stable high current capability and full thermal
capacity under the required duties of today’s load and short circuit
conditions.
Application
The D-73P disconnect switch is a single-phase hookstick-operated
switch to sectionalize or isolate overhead lines on electrical
distribution systems up to 38 kV. The switch can be mounted in
a vertical, underhung, pole-mounted, or single/double cross arm
configuration. A variety of terminal connections are available to
customize this switch to fit the user’s needs. Contact your Eaton
representative for more information.
Figure 1. D-73P disconnect switch with features.
Features and detailed description
Blade Design: Silver-plated copper in truss-type
construction with cross braces in front and back
of contacts provides secure force on contacts,
as well as, superior rigidity, thus minimizing side
deflection and maintaining positive alignment
when closing the switch. The blade and latch
design provides for positive latch.
Contacts: High pressure line type,
both clip and hinge ends.
Minimum Current Interchanges: Uniform
conductivity is assured through utilization
of hard drawn copper bar in forming one
piece stationary contacts and terminal pads.
Design reduces current interchange points
to a minimum.
Loadbreak Hooks (Standard): Galvanized
steel hooks to be used with portable
loadbreak tool.
Terminal Pad: NEMA
®
two hole terminal pad.
Capable of accepting wide selection of connectors.
See Table 1 for standard offering. 600A ratings have
tin-plated pads to accommodate either bronze or
aluminum terminals. 900A switch has silver plated
contacts.
Insulators: Available in light weight UltraSIL
silicone rubber polymer, 2.25B.C., characteristics
available upon request. Porcelain, and cycloaliphatic
insulators also available.
Switch Base: Base and backstrap is rugged, hot
dipped galvanized 7 gauge steel that have a dead-
ending hole for conductor at each end. Rigidity
of base prevents distortion/twisting when bolting
down.
Vertical or Underhung
Mounting: Easily adaptable
to single or double crossarm
construction.
Back-strap: 15" backstrap with two mounting
bolts, washers, lockwashers, and nuts standard.
Optional full length (25.25") backstrap also available
with two or four mounting bolts.
Captive Bolts: Two captive stainless
steel carriage bolts. 1-3/4" long bolts,
accepts compression terminals.
Parallel Groove Clamp:
Two-bolt tinned bronze clamp
secured with two galvanized
steel bolts. Conductor range:
#6 solid to 397.5 MCM ASCR,
500 MCM Copper or 556
MCM Aluminum.
90 Degree Stop Pin: Pin included as standard
option to provide blade opening stop at 90 degrees.
Pin able to be removed in field for 180° opening.
150 Degree Latch: Optional positive stop
for providing blade latch at 150° opening.
Catalog Data CA008005EN
Effective April 2016
D-73P disconnect and bypass switches
2
www.eaton.com/cooperpowerseries