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Instructional Leafl et IL04707001E
Effective June 2011
Push–pull operators
Application guide
To assist in the selection of contact blocks, the diagram on page 1
shows pictorially by symbols "A" and "B" locations of contact
circuits after assembly of contact blocks to the operator. Table 1 and
Table 2 show the effect of the push and pull operations on either
NO or NC contacts.
A maximum of two contact blocks may be used with each operator.
Maximum torque of stacking screws is 9 in-lbs. Adding more
than two blocks may cause this switch to malfunction. Single
circuit contact must be mounted under circuit "A" . Special function
contact blocks are not available for use with the three-position
push–pull operator.
N
ote:
Buttons and lenses in various colors are ordered and packaged sepa-
rately. This pushbutton unit is oiltight when the adapter gasket and button or
lens gasket are securely tightened.
Table 2. Push–Pull Wire Position Operation
Control
Line Diagram
Three-wire,
A
L1
Circuit
three-position,
momentary
B
Circuit
M
Two-wire,
L1
two-position,
maintained
A
or
Circuit
B
Three-wire
A
L1
Circuit
momentary pull,
maintained push
B
Circuit
M
Operator
Momentary
L2
push and pull
M
OL
Maintained
L2
push and pull
M
OL
Maintained
L2
push and
M
OL
maintained
ready,
momentary
pull to start
Eaton Corporation
Electrical Sector
1111 Superior Ave.
Cleveland, OH 44114
United States
877-ETN-CARE (877-386-2273)
Eaton.com
© 2011 Eaton Corporation
All Rights Reserved
Printed in USA
Publication No. IL04707001E / Z11206
June 2011
Table 1. Push–Pull Operator Types
Operator
Type
Momentary
push and pull
and
momentary pull,
maintained push
Maintained
push and pull
(Two-positions)
Momentary
push and pull
(Three-positions)
N
ote:
X = contacts closed; O = contacts open
Circuits
Operator Mode
2NC
START
contact
(Momentary)
blocks
1NC
START
contact
(Maintained)
blocks
2NC
START
contact
(Momentary)
blocks
10250T contact block assembly
Operator Mode and Contact Circuit
Pulled
Intermediate
Contact
Block
Circuits
Circuits
Circuit
A
B
A
2NC
X
X
O
1NO
O
O
1NC
X or X
No
2NC
X
X
intermediate
1NO
O or O
position
2NO
O
O
1NO–1NC
O
X
O
Normal position
(Maintained)
No
intermediate
position
Normal position
(Maintained)
Eaton is a registered trademark
of Eaton Corporation.
All other trademarks are property
of their respective owners.
Pushed
Circuits
B
A
B
X
O
O
X
O or O
O
O
O
O
X
X
O
X
O
STOP
(Momentary)
STOP
(Maintained)
STOP
(Momentary)
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