E34PB3 EATON CUTLER HAMMER, E34PB3 Datasheet - Page 168
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E34PB3
Manufacturer Part Number
E34PB3
Description
Pushbutton Switch Operator
Manufacturer
EATON CUTLER HAMMER
Datasheet
1.10250T102.pdf
(320 pages)
Specifications of E34PB3
Circuitry
SPST-NO
Actuator Diameter
30mm
Switch Operation
(ON)
Contact Current Max
10A
Switch Terminals
Plug-In
Illumination
Non Illuminated
For Use With
E34 Series Pushbutton Switches
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47.6
Step 3: Cam Selection.
The cam you select
determines the operation of
all contact blocks mounted to
the operator. It is selected on
the basis that it provides the
simplest circuitry for the
desired “X-O” diagram. The
selection tables show all the
“X-O” combinations. For the
purpose of this example, the
applicable portion of those
tables is shown on this page.
Now to make the cam
selection, make a simple
worksheet such as:
X O O
O O X
It becomes immediately
obvious that cam 3 is the
better choice for two
reasons, (1) the series
combination can be avoided
making it simpler to wire, (2)
only two contacts are
required, which is less
expensive than the three
contacts required by cam 2.
Step 4: Contact Block
Selection.
Having selected the cam,
contact block selection is
simply a matter of gathering
the A position and B position
circuits into pairs which make
up the most convenient contact
block arrangement. If there is
an imbalance in the number of
circuits under A or B, then
single circuit blocks must be
selected for these leftover
circuits.
Back to the worksheet,
having selected cam 3 do
this:
168
X O X
O O X
ANO
(A)NO-(B)NC
Cam 2
(B)NO
BNO
Control Products Catalog CA08102001E—August 2010 www.eaton.com
10250T2
Pushbuttons and Indicating Lights
30.5 mm Heavy-Duty Watertight/Oiltight—10250T
Cam 3
(A)NO
(B)NO
Step 5: Selector Switch
Operator.
Lastly, you have to choose
from the many types of
operators—knob and lever in
various colors or keyed. Also
what combinations of
maintained and spring return
functions are required.
Selection of these operators
can be found on Page 171.
For the example in step 4 you
may want a three-position
maintained black knob,
cam 3—Catalog Number
10250T1323.
The Complete Switch:
10250T1323 with one
10250T2 or, for one
composite catalog number,
10250T21KB found on
Page 166.
Diagrams
Circuits shown illustrate
connections to obtain a
selector switch circuit
combination and are shown
with their appropriate line
diagrams. Field wiring of
jumper connections required
as shown.
X = Closed circuit
O = Open circuit
Wiring of Jumper
Connections
Series Connection
Parallel Connection
Four-position selector
switches are limited to four
contact blocks.
Contact Blocks
For selection and number of
available contact blocks per
operator, see Pages 194–
197.
No.
1
4
No.
1
Example Selection Table
Two-Position Selector Switch Contact Block Selection
2
Note
Wired in series.
“X-O” Pattern
X
O
Desired Circuit and
Operator Position
X
O
O
O
O
X
O
X
Cam Code #2
Top A
NO
—
Contact Blocks Required to
Accomplish Circuit Function
Top Plunger A
NC
NO
Bottom B
NO
NC
or
or
Cam Code #3
Top A
NO
—
Bottom Plunger B
NC
NO
Bottom B
—
NO
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