Switch Actuators – Mouser United Kingdom

.hide-partial { max-height: none; } .show-more { display: none; }

Harmony XB4 & XB5 Emergency Stop Push Buttons

Schneider Electric Harmony XB4 and XB5 Emergency Stop Push Buttons offer 40mm mushroom heads and operate with a latched push-pull, turn release, or key release mechanism. These push buttons feature a robust metal or plastic bezel, depending on the model. Emergency Machine Stop (EMS) and Emergency Off (EO) push buttons are easily installed into a standard 22mm diameter cutout and connected with simple screw-clamp connections. These push buttons are clearly visible at a distance due to the clear color and prominent 30mm, 40mm, or 60mm mushroom shapes. Due to the IP66 rating, these push buttons are impact-, dust-, water-, and vibration-resistant, making them ideal for operation in even the most demanding environments. Schneider Electric Harmony XB4 and XB5 Emergency Stop Push Buttons are compatible for installation with XALK and XAPK yellow lid control stations.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 21

Applied Filters:

Series

Type

For Use With

Designed for

Color

IP Rating

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Switch Actuators MUSHROOM PB OPERATOR

ZB4BS864
Schneider Electric
1: £60.32
9In Stock

Mfr. Part No.
ZB4BS864

Mouser Part No
996-ZB4BS864

Schneider Electric

Switch Actuators MUSHROOM PB OPERATOR

Learn More

Datasheet

9In Stock

£60.32

Quote

Min.: 1
Mult.: 1

ZB4

Mushroom

Emergency Stop Switches

Red

Switch Actuators TRIGGER ACTION TURN TO RELEASE 40MM RED

ZB5AS844
Schneider Electric
1: £58.19
515In Stock
11Expected 17/02/2026

Mfr. Part No.
ZB5AS844

Mouser Part No
996-ZB5AS844

Schneider Electric

Switch Actuators TRIGGER ACTION TURN TO RELEASE 40MM RED

Learn More

Datasheet

515In Stock

11Expected 17/02/2026

£58.19

£52.95

£50.99

View

Min.: 1
Mult.: 1

ZB5

Turn to Release

22 mm Pushbutton Switches

XB5 Series

Red

Switch Actuators MUSHROOM PB

ZB4BS844
Schneider Electric
1: £71.67
92In Stock

Mfr. Part No.
ZB4BS844

Mouser Part No
996-ZB4BS844

Schneider Electric

Switch Actuators MUSHROOM PB

Learn More

Datasheet

92In Stock

£71.67

£59.51

£54.35

Min.: 1
Mult.: 1

ZB4

Turn to Release

22 mm Pushbutton Switches

XB4 Series

Switch Actuators PUSHBUTTON MUSHROOM HEAD 22MM XB4

ZB4BS84430
Schneider Electric
1: £65.55
100In Stock

Mfr. Part No.
ZB4BS84430

Mouser Part No
996-ZB4BS84430

Schneider Electric

Switch Actuators PUSHBUTTON MUSHROOM HEAD 22MM XB4

Learn More

Datasheet

100In Stock

£65.55

£55.09

Min.: 1
Mult.: 1

ZB4

Pushbutton

Pushbutton Switches

XB4 Series

Switch Actuators MUSHROOM PB

ZB4BT84
Schneider Electric
1: £39.56
87In Stock

Mfr. Part No.
ZB4BT84

Mouser Part No
996-ZB4BT84

Schneider Electric

Switch Actuators MUSHROOM PB

Learn More

Datasheet

87In Stock

£39.56

£33.10

£31.67

£30.09

£29.20

Min.: 1
Mult.: 1

ZB4

Push-Pull

22 mm Pushbutton Switches

XB4 Series

Red

Switch Actuators MUSHROOM PB OPERATOR

ZB4BS834
Schneider Electric
1: £71.67
1In Stock

Mfr. Part No.
ZB4BS834

Mouser Part No
996-ZB4BS834

Schneider Electric

Switch Actuators MUSHROOM PB OPERATOR

Learn More

Datasheet

1In Stock

£71.67

£62.82

£54.83

£53.17

Min.: 1
Mult.: 1

ZB4

Head

22 mm Pushbutton Switches

XB4 Series

IP66, IP69, IP69K

Switch Actuators MUSHROOM PB

ZB4BS944
Schneider Electric
1: £115.42
2In Stock

Mfr. Part No.
ZB4BS944

Mouser Part No
996-ZB4BS944

Schneider Electric

Switch Actuators MUSHROOM PB

Learn More

Datasheet

2In Stock

£115.42

£95.91

£89.74

£89.01

Min.: 1
Mult.: 1

ZB4

Key Operated

22 mm Pushbutton Switches

XB4 Series

Switch Actuators Trigger Action Push Pull Red 60 mm

ZB4BX84
Schneider Electric
1: £42.03
5In Stock

Mfr. Part No.
ZB4BX84

Mouser Part No
996-ZB4BX84

Schneider Electric

Switch Actuators Trigger Action Push Pull Red 60 mm

Learn More

Datasheet

5In Stock

£42.03

£41.85

£41.54

£41.43

Quote

Min.: 1
Mult.: 1

ZB4

Mushroom

Emergency Stop Switches

Red

Switch Actuators NON ILL. E Stop RD TTR SQ

ZB5AS84W00
Schneider Electric
1: £66.29
3In Stock

Mfr. Part No.
ZB5AS84W00

Mouser Part No
996-ZB5AS84W00

Schneider Electric

Switch Actuators NON ILL. E Stop RD TTR SQ

Learn More

Datasheet

3In Stock

£66.29

£57.16

£54.35

Min.: 1
Mult.: 1

ZB5

Push Turn

Yellow

IP69K

Switch Actuators ILL. E Stop RD TTR SQ 120V 1 RD LED

ZB5AS84W2G
Schneider Electric
1: £100.32
5In Stock

Mfr. Part No.
ZB5AS84W2G

Mouser Part No
996-ZB5AS84W2G

Schneider Electric

Switch Actuators ILL. E Stop RD TTR SQ 120V 1 RD LED

Learn More

Datasheet

5In Stock

£100.32

£87.52

£84.98

£83.35

Min.: 1
Mult.: 1

ZB5

Push Turn

Yellow

IP69K

Switch Actuators ILL.E Stop RD TTR SQ 24V 2 S WH RD LED

ZB5AS84W3B
Schneider Electric
1: £116.04
3In Stock

Mfr. Part No.
ZB5AS84W3B

Mouser Part No
996-ZB5AS84W3B

Schneider Electric

Switch Actuators ILL.E Stop RD TTR SQ 24V 2 S WH RD LED

Learn More

Datasheet

3In Stock

£116.04

£91.01

£89.96

Min.: 1
Mult.: 1

ZB5

Push Turn

Yellow

IP69K

Switch Actuators TRIGGER ACTION PUSH PULL MSHRM 40MM RED

ZB5AT84
Schneider Electric
1: £35.37
20In Stock

Mfr. Part No.
ZB5AT84

Mouser Part No
996-ZB5AT84

Schneider Electric

Switch Actuators TRIGGER ACTION PUSH PULL MSHRM 40MM RED

Learn More

Datasheet

20In Stock

£35.37

£31.48

£30.00

£29.15

View

Min.: 1
Mult.: 1

ZB5

Head

22 mm Pushbutton Switches

ZB5 Series

IP66, IP67, IP69, IP69K

Switch Actuators PLASTIC PUSH PULL E-STOP W/STATUS INDI

ZB5AT8643M
Schneider Electric
1: £99.34
4In Stock

Mfr. Part No.
ZB5AT8643M

Mouser Part No
996-ZB5AT8643M

Schneider Electric

Switch Actuators PLASTIC PUSH PULL E-STOP W/STATUS INDI

Learn More

Datasheet

4In Stock

£99.34

£94.82

£93.29

£91.74

View

Min.: 1
Mult.: 1

ZB5

Mushroom

Emergency Stop Switches

Red

Switch Actuators TRIGGER ACTION TURN TO RELEASE 30MM RED

ZB5AS834
Schneider Electric
1: £73.16
5In Stock

Mfr. Part No.
ZB5AS834

Mouser Part No
996-ZB5AS834

Schneider Electric

Switch Actuators TRIGGER ACTION TURN TO RELEASE 30MM RED

Learn More

Datasheet

5In Stock

£73.16

£60.59

£56.55

£54.35

Min.: 1
Mult.: 1

ZB5

Head

22 mm Pushbutton Switches

ZB5 Series

IP66, IP67, IP69, IP69K

Switch Actuators ILL. E Stop RD TTR SQ 24V 1 RD LED

ZB5AS84W2B
Schneider Electric
1: £88.57
5In Stock

Mfr. Part No.
ZB5AS84W2B

Mouser Part No
996-ZB5AS84W2B

Schneider Electric

Switch Actuators ILL. E Stop RD TTR SQ 24V 1 RD LED

Learn More

Datasheet

5In Stock

£88.57

£76.36

£74.38

Min.: 1
Mult.: 1

ZB5

Push Turn

Yellow

IP69K

Switch Actuators Trigger Action Turn to Release Red 60 mm

ZB5AS864
Schneider Electric
1: £61.52
6In Stock

Mfr. Part No.
ZB5AS864

Mouser Part No
996-ZB5AS864

Schneider Electric

Switch Actuators Trigger Action Turn to Release Red 60 mm

Learn More

Datasheet

6In Stock

£61.52

£57.88

Min.: 1
Mult.: 1

ZB5

Mushroom

Emergency Stop Switches

Red

Switch Actuators EMERGENCY STOP HEAD RED PUSH PULL 30MM

ZB5AT844
Schneider Electric
1: £29.20
Non-Stocked Lead-Time 2 Weeks

Mfr. Part No.
ZB5AT844

Mouser Part No
996-ZB5AT844

Schneider Electric

Switch Actuators EMERGENCY STOP HEAD RED PUSH PULL 30MM

Learn More

Datasheet

Non-Stocked Lead-Time 2 Weeks

£29.20

Min.: 1
Mult.: 1

ZB5

Head

22 mm Pushbutton Switches

ZB5 Series

IP66, IP67, IP69, IP69K

Switch Actuators MUSHROOM PB

ZB4BS934
Schneider Electric
1: £91.72
Non-Stocked

Mfr. Part No.
ZB4BS934

Mouser Part No
996-ZB4BS934

Schneider Electric

Switch Actuators MUSHROOM PB

Learn More

Datasheet

Non-Stocked

£91.72

£85.64

£83.83

£82.58

View

Min.: 1
Mult.: 1

ZB4

Mushroom

Emergency Stop Switches

Red

Switch Actuators 22MM E-STOP, TRG ACT'N 30MM HEAD

ZB4BT844
Schneider Electric
1: £40.30
Non-Stocked

Mfr. Part No.
ZB4BT844

Mouser Part No
996-ZB4BT844

Schneider Electric

Switch Actuators 22MM E-STOP, TRG ACT'N 30MM HEAD

Learn More

Datasheet

Non-Stocked

£40.30

£34.77

£32.77

£31.73

Min.: 1
Mult.: 1

ZB4

Switch Actuators ILL. E Stop RD TTR SQ 230V 1 RD LED

ZB5AS84W2M
Schneider Electric
1: £100.32
Non-Stocked

Mfr. Part No.
ZB5AS84W2M

Mouser Part No
996-ZB5AS84W2M

Schneider Electric

Switch Actuators ILL. E Stop RD TTR SQ 230V 1 RD LED

Learn More

Datasheet

Non-Stocked

£100.32

£87.51

£84.98

£83.35

Min.: 1
Mult.: 1

ZB5

Push Turn

Yellow

IP69K

Switch Actuators Trigger Action Push Pull Red 60 mm

ZB5AX84
Schneider Electric
1: £33.20
Non-Stocked

Mfr. Part No.
ZB5AX84

Mouser Part No
996-ZB5AX84

Schneider Electric

Switch Actuators Trigger Action Push Pull Red 60 mm

Learn More

Datasheet

Non-Stocked

£33.20

Min.: 1
Mult.: 1

ZB5

Mushroom

Emergency Stop Switches

Red

Harmony XB4 & XB5 Emergency Stop Push Buttons

Customer Service Office

Company

Resources

Support