Technical Data Bulletin
© 2019 Schneider Electric
All Rights Reserved
19-29
schneider-electric.us
XB4 Operators and Emergency Stop
Operators
22 mm Push Buttons
Refer to Catalog DIA5ED2121212EN
XB4 Operators and Emergency Stop Operators
ZB4BC24 ZB4BC2
ZB4BR2
ZB4BS834
ZB4BT4
ZB4BS64 ZB4BS74
ZBY9320
Table 19.77: Mushroom Heads, Momentary
Shape of Head
Diameter of Head Color of Head
Catalog Number
30 mm
Black ZB4BC24
Green ZB4BC34
Red ZB4BC44
Yellow ZB4BC54
Blue ZB4BC64
40 mm
Black ZB4BC2
Green ZB4BC3
Red ZB4BC4
Yellow ZB4BC5
Blue ZB4BC6
60 mm
Black ZB4BR2
Green ZB4BR3
Red ZB4BR4
Yellow ZB4BR5
Blue ZB4BR6
Table 19.78: Mushroom Heads for Maintained Push Buttons
Shape of Head Type of Push
Diameter of Head Color
Catalog Number
For use in Emergency Stop applications
Trigger action
Push-pull [7]
40 mm Red ZB4BT84
60 mm Red ZB4BX84
Trigger action
Turn-to-release [7]
30 mm Red ZB4BS834
40 mm
Red ZB4BS844
Red marked “EMO” ZB4BS84430
60 mm Red ZB4BS864
Trigger action
Key release
(No. 455) [7]
30 mm Red ZB4BS934
40 mm Red
ZB4BS944 [8]
60 mm Red ZB4BS964
For use in non-Emergency Stop applications
Push-pull
40 mm Black ZB4BT2
60 mm Black ZB4BX2
Turn-to-release
30 mm Black ZB4BS42
40 mm
Black ZB4BS52
Yellow ZB4BS55
Yellow marked
“Robot Stop”
ZB4BS5550
60 mm Black ZB4BS62
Key release
(No. 455)
30 mm Black ZB4BS72
40 mm Black ZB4BS12
60 mm Black ZB4BS22
Table 19.79: Circular Legends for Emergency Stop Mushroom Heads
(yellow background)
Diameter Text
Catalog Number
90 mm
Blank ZBY8101
EMERGENCY STOP ZBY8330
60 mm Bezeled
Blank ZBY9121
Emergency Stop
ZBY9320
Prada de Emergencia
ZBY9420
Not Halt ZBY9220
For Legends, refer to XB4 Legend Holders, page 19-38,XB4 Legend Inserts, page 19-39, andXB4 Legend Sheets,
page 19-39.
19
PUSH BUTTONS AND OPERATOR
INTERFACE
[7] Trigger action mushroom heads are tamper proof in that a change of contact state is not possible by teasing or floating the operator. For emergency stop applications, always use a trigger
action push button (per EN/IEC 13850).
[8] Other key numbers:
—key no. 421E: add the suffix 12 to the catalog number.
—key no. 458A: add the suffix 10 to the catalog number.
—key no. 520E: add the suffix 14 to the catalog number.
—key no. 3131A: add the suffix 20 to the catalog number.
Example: The catalog number for a Ø 40 mm red mushroom head for a trigger action, maintained push button, with release by
key no. 421E becomes: ZB5AS94412.