Disconnect and oil circuit recloser

bypass switches; regulator and current

transformer bypass switches

Contents

Description Page

D-73 Distribution-Class Disconnect Switch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 2

M-72 Station-Class Disconnect Switch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4

H-72 Station-Class Disconnect Switch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6

D73-3P Distribution-Class Oil Circuit Recloser Bypass Switch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8

M95-3P Station-Class Oil Circuit Recloser Bypass Switch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �10

Oil Circuit Recloser Station-Class Fused Bypass Combinations For Substation Mounting � � � � � � � � � � � � �12

HB-65/HC-65 Station-Class Voltage Regulator Bypass Switch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �14

M-72 Station-Class Bypass Switch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �16

H72-3P Station-Class Bypass Switch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �18

HB-65 Current Transformer Bypass Switch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 20

Switches

Catalog Data

CA0 08006EN

Effective April 2016

Supersedes May 2015

COOPER POWER

SERIES

D-73 distribution-class disconnect switch

Eaton's D-73 distribution-class, single pole, single throw disconnect

switches provide a durable switch for line sectionalizing or isolating

equipment on distribution circuits� 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�

Current Ratings: High current carrying capacity of 600 and 900 A

continuous and 40 kA momentary�

Blade Design: Truss-type construction of formed copper bars has

increased width at hinge for greater rigidity, thus minimizing side deflec-

tion and maintaining positive alignment when closing the switch�

Formed Steel Channel Base: Base and backstrap are rugged, hot

dipped galvanized steel and have a dead- ending hole at each end�

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�

Contacts: High pressure line type, both clip and hinge ends�

Contact Surfaces: 600 A ratings are silver to copper; 900 A are

silver to silver� Silver washers between blade and stationary hinge

act as a bearing to assure easy blade movement after long time

exposure to contaminated atmospheres�

Tin-Plated Terminal Pads: Accommodate terminals for either

aluminum or copper conductors�

Positive Blade Lock and Pryout: Blade latch prevents switch

opening under high momentary current� Easy opening is assured

through pryout assist�

Insulators: 2�25" B�C�, characteristics available upon request�

Vertical or Underhung Mounting: Easily adaptable to single or

double crossarm construction�

90° Blade Stop: Stop can be field removed for 180° blade travel�

Special Applications: Variations to meet specific customer

requirements are available upon request�

Figure 1. D-73 single-pole disconnect switch.

Table 1. Terminal Assemblies

230026-S6 262013-S6 262224-1S6

TWO-BOLT TINNED BRONZE TWO CAPTIVE STAINLESS COMPRESSION TERMINAL BRIDGE TYPE TWO-BOLT

PARALLEL GROOVE CLAMP STEEL BOLTS Refer to Catalog 325-21 CLAMP

Secured with two galvanized Factory installed, 1

" long for complete information Accepts conductor sizes

steel bolts� Conductor range: bolts, accepts compression relative to compression ranging from #4 Solid to

#6 Solid to 397�5 MCM ASCR, terminals� fitting required� 500 MCM copper or aluminum�

500 MCM Copper or 556 MCM

Aluminum�

Introduction

Eaton's Cooper Power™ series Kearney™ disconnect and oil circuit

recloser bypass switches feature all copper bar current-carrying

parts, providing uniform strength and conductivity with no hidden

defects� Silver washers between the blade assembly and hinge act

as a bearing, ensuring easy blade opening, even after long exposure

to contaminated atmospheres� Eaton's Cooper Power series H-72

switch has silver inlays blazed to the hinge and jaw stationary

contacts� The truss-type blade assembly with wide hinge and formed

channel blades assures proper blade alignment during closing, even

with applied side forces� The positive blade latch prevents nuisance

openings and opening under fault conditions� The positive pryout

affords easy opening under icing conditions� Eaton's Cooper Power

series D-73, M-72 and H-72 switch models feature a 90° field

removable stop� The stop pin can be removed if 180° blade travel

is required� Tinned terminal pads accommodate either bronze or

aluminum terminals�

Eaton's Kearney regulator and current transformer bypass switches

feature sequenced, make before break operation in both 600 A and

1200 A ratings, minimizing the possibility of operator error� The

single-pull operation of the 600 A ratings both bypasses and

disconnects the regular or current transformer, or reconnects them

to the line� The two-pull operation of 1200 A ratings minimizes the

operating effort of these heavy-duty switches� An arcruptor or

snaphorn provided on regulator bypass switches interrupts the

regulator exciting current and prevents arcing and damage to the

switch contacts when disconnecting the regulator� Reverse loop

contacts on 600 A ratings increase contact pressure and minimize

the possibility of contact damage when subjected to high fault

current�

Catalog Data CA008006EN

Effective April 2016

Disconnect and oil circuit recloser bypass switches; regulator

and current transformer bypass switches