Westinghouse DB-75 User Manual

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LIST
OF
ILLUSTRATIONS
Page
Figure
1
DB
-
75
Outline
and
Mounting
Dimensions
1
A
DB
-
100
Outline
and
Mounting
Dimensions
IB
DBF
-
40
Outline
and
Mounting
Dimensions
1
C
DB
-
75
Outline
and
Mounting
Dimensions
2
Typical
Wiring
Diagrams
3
Cross
-
Sectional
View
of
DB
-
75
and
DB
-
100
Circuit
Breakers
3
A
DB
-
75
and
DB
-
100
Three
Position
Operating
Mechanism
4
Adjusting
Limits
of
Main
and
Arcing
Contacts
for
DB
-
75
and
DB
-
100
Cir
-
cuit
Breakers
5
Closing
Solenoid
—
Construction
Details
.
6
Cross
-
Sectional
View
of
Overqurrent
Tripping
Device
with
Long
Delay
and
Instantaneous
Elements
.
7
Schematic
and
Typical
Time
-
Current
Characteristics
of
Overcurrent
Trip
-
ping
Device
with
Long
Delay
and
Instantaneous
Elements
8
Cross
-
Sectional
View
of
Overcurrent
Tripping
Device
with
Long
Delay
and
Short
Delay
Elements
8
A
Selective
Overcurrent
Trip
Operations
9
Schematic
and
Typical
Time
-
Current
Characteristics
of
Overcurrent
Trip
-
ping
Device
with
Long
Delay
and
Short
Delay
Elements
10
A
Schematic
Diagram
of
Overcurrent
Tripping
Device
with
Instantaneous
Element
Only
10
B
Typical
Time
-
Current
Characteristics
of
Overcurrent
Tripping
Device
with
Instantaneous
Element
Only
11
Control
Relay
—
Construction
Details
.
'
12
Shunt
Trip
Attachment
—
Construction
Details
13
Undervditage
Trip
Attachment
—
Construction
Details
.
14
Undervoltdge
Time
Attachment
—
Construction
Details
15
Auxiliary
Switch
—
Construction
Details
16
Alarm
Switch
Attachment
—
Construction
Details
17
Electrical
Lockout
Attachment
—
Construction
Details
18
Key
Lock
or
Key
Interlock
Attachment
—
Construction
Details
19
Rectifier
Unit
for
A
-
C
Undervoltage
and
Electrical
Lockout
Attachments
.
.
.
.
31
20
Reverse
Current
Trip
Attachment
—
Types
"
DB
-
75
"
and
“
DB
-
100
"
Air
Circuit
Breakers
21
Cross
-
Section
View
of
Field
Discharge
Pole
Unit
9
10
11
12
13
15
16
17
18
19
20
21
22
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Courtesy of NationalSwitchgear.com

Westinghouse DB-75 Specifications

General

Brand	Westinghouse
Model	DB-75
Category	Circuit breakers
Language	English