Technical Data Bulletin

19-34
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All Rights Reserved
22 mm Push Buttons
XB4 Illuminated Operators
schneider-electric.us
Refer to Catalog DIA5ED2121212EN
ZB4BW7A3741
ZB4BW7A1721
Table 19.95: Two Button with Clear Pilot Light, Momentary
Shape of Head Description Marking Cap Color
Degree of
Protection
Catalog
Number
No Marking
Two flush
—
Green
Red
IP66
IP69K
ZB4BW7A3740
—
White
Black
ZB4BW7A1720
One flush
One extended
—
Green
Red
ZB4BW7L3740
Premarked
Two flush
“I” (white)
“O” (white)
Green
Red
IP66
IP69K
ZB4BW7A3741
“I” (black)
“O” (white)
White
Black
ZB4BW7A1721
One flush
One extended
“I” (white)
“O” (white)
Green
Red
ZB4BW7L3741
Two flush
“
” (black)
“
” (white)
White
Black
ZB4BW7A1724
Two flush
“+” (black)
“-” (white)
White
Black
ZB4BW7A1715
Without caps
Two flush
without caps
— —
IP66
IP69K
ZB4BW7A9
ZB4BK1343
Table 19.96: Illuminated Selector Switches, Standard Lever
Shape of Head Number and Type of Positions
Catalog Number
[16]
Only use with Protected LED light modules
2-maintained ZB4BK12●3
2-momentary from right to left
ZB4BK14●3
3-maintained
ZB4BK13●3
3-momentary to center
ZB4BK15●3
3-momentary from right to center
ZB4BK18●3
3-momentary from left to center
ZB4BK17●3
Table 19.97: Sequence of Contacts on Illuminated Selector Switch Bodies
Unit Type
Selector Switches
2-position 3-position
315°
45°
315°
0°
45°
Operator Plunger
Position
Up
Down
Contact Block Location L R L R L R L R L R
Contacts
N.O. O O X X X O O O O X
N.C. X X O O O X X X X O
Note: L=Left, R=Right, O=Open, X=Closed
2 Position Selector Switch 3 Position Selector Switch
Contact block guide Contact block guide
O X
1 N.O. (left or right)
O O X
1 N.O. (left)
X O
1 N.C. (left or right)
X O X
2 N.O. wired in parallel (side by side)
O X 1 N.O. X O O
1 N.O. (right)
and O X X
1 N.C. (right)
X O 1 N.C. X X O
1 N.C. (left)
O X O
2 N.C. wired in series (side by side)
For Legends, refer to XB4 Legend Holders, page 19-38, XB4 Legend Inserts, page 19-39, and XB4 Legend Sheets,
page 19-39.
For Caps, refer to XB4 Accessories, page 19-40.
19
PUSH BUTTONS AND OPERATOR
INTERFACE
[16] ● Designate color as follows: 1—white, 3—green, 4—red, 5—yellow, 6—blue.