Switch Accessories – Mouser Finland

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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.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	For Use With	Designed for	Mounting Style
Switch Actuators MUSHROOM PB ZB4BS844 Schneider Electric 1: 58,47 € 305In Stock	Mfr. Part No. ZB4BS844 Mouser Part No 996-ZB4BS844	Schneider Electric	Switch Actuators MUSHROOM PB Learn More about Schneider Electric xb4 zb4 22mm pushbuttons	Datasheet	305In Stock	58,47 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Turn to Release	22 mm Pushbutton Switches	XB4 Series
Switch Actuators PUSHBUTTON MUSHROOM HEAD 22MM XB4 ZB4BS84430 Schneider Electric 1: 59,26 € 418In Stock 446On Order	Mfr. Part No. ZB4BS84430 Mouser Part No 996-ZB4BS84430	Schneider Electric	Switch Actuators PUSHBUTTON MUSHROOM HEAD 22MM XB4 Learn More about Schneider Electric xb4 zb4 22mm pushbuttons	Datasheet	418In Stock 446On Order	59,26 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Pushbutton	Pushbutton Switches	XB4 Series
Switch Actuators TRIGGER ACTION TURN TO RELEASE 40MM RED ZB5AS844 Schneider Electric 1: 58,47 € 282In Stock	Mfr. Part No. ZB5AS844 Mouser Part No 996-ZB5AS844	Schneider Electric	Switch Actuators TRIGGER ACTION TURN TO RELEASE 40MM RED Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	282In Stock	58,47 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Turn to Release	22 mm Pushbutton Switches	XB5 Series
Switch Contact Blocks / Switch Kits N/O CONTACT BLOCK ZBE101 Schneider Electric 1: 10,36 € 3 191In Stock	Mfr. Part No. ZBE101 Mouser Part No 996-ZBE101	Schneider Electric	Switch Contact Blocks / Switch Kits N/O CONTACT BLOCK Learn More about Schneider Electric schneider harmony e stop push buttons	Datasheet	3 191In Stock	10,36 €	Min.: 1 Mult.: 1	Contact Blocks	SPST	Pushbutton Switches	XB4, XB5 Series
Switch Contact Blocks / Switch Kits N/C CONTACT BLOCK ZBE102 Schneider Electric 1: 10,36 € 2 806In Stock 328Expected 13/11/2026	Mfr. Part No. ZBE102 Mouser Part No 996-ZBE102	Schneider Electric	Switch Contact Blocks / Switch Kits N/C CONTACT BLOCK Learn More about Schneider Electric schneider harmony e stop push buttons	Datasheet	2 806In Stock 328Expected 13/11/2026	10,36 €	Min.: 1 Mult.: 1	Contact Blocks	SPST	Pushbutton Switches	XB4, XB5 Series
Switch Actuators TRIGGER ACTION KEY RELEASE 60MM RED ZB5AS964 Schneider Electric 1: 72,22 € 10In Stock	Mfr. Part No. ZB5AS964 Mouser Part No 996-ZB5AS964	Schneider Electric	Switch Actuators TRIGGER ACTION KEY RELEASE 60MM RED Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	10In Stock	72,22 €	Min.: 1 Mult.: 1	Key Release Actuators	Pushbutton Head
Switch Actuators MUSHROOM PB OPERATOR ZB4BS834 Schneider Electric 1: 57,21 € 75In Stock	Mfr. Part No. ZB4BS834 Mouser Part No 996-ZB4BS834	Schneider Electric	Switch Actuators MUSHROOM PB OPERATOR Learn More about Schneider Electric xb4 zb4 22mm pushbuttons	Datasheet	75In Stock	57,21 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Head	22 mm Pushbutton Switches	XB4 Series	Panel Mount
Switch Actuators MUSHROOM PB ZB4BS944 Schneider Electric 1: 96,77 € 15In Stock	Mfr. Part No. ZB4BS944 Mouser Part No 996-ZB4BS944	Schneider Electric	Switch Actuators MUSHROOM PB Learn More about Schneider Electric xb4 zb4 22mm pushbuttons	Datasheet	15In Stock	96,77 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Key Operated	22 mm Pushbutton Switches	XB4 Series
Switch Actuators MUSHROOM PB ZB4BT84 Schneider Electric 1: 31,42 € 30In Stock 86On Order	Mfr. Part No. ZB4BT84 Mouser Part No 996-ZB4BT84	Schneider Electric	Switch Actuators MUSHROOM PB Learn More about Schneider Electric xb4 zb4 22mm pushbuttons	Datasheet	30In Stock 86On Order On Order Ship Dates Mfr. No: ZB4BT84 Stock: 30 Can Dispatch Immediately On Order: 41 Expected 02/11/2026 45 Expected 20/11/2026 Factory Lead Time: 4 Weeks	31,42 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Push-Pull	22 mm Pushbutton Switches	XB4 Series
Switch Actuators TRIGGER ACTION TURN TO RELEASE 30MM RED ZB5AS834 Schneider Electric 1: 58,47 € 5In Stock 6Expected 09/11/2026	Mfr. Part No. ZB5AS834 Mouser Part No 996-ZB5AS834	Schneider Electric	Switch Actuators TRIGGER ACTION TURN TO RELEASE 30MM RED Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	5In Stock 6Expected 09/11/2026	58,47 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Head	22 mm Pushbutton Switches	ZB5 Series	Panel Mount
Switch Actuators Illuminated E.stop plastic red 24V ZB5AS84W2B Schneider Electric 1: 80,02 € 4In Stock	Mfr. Part No. ZB5AS84W2B Mouser Part No 996-ZB5AS84W2B	Schneider Electric	Switch Actuators Illuminated E.stop plastic red 24V Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	4In Stock	80,02 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Push Turn			Panel
Switch Actuators Illuminated E.stop plast WH red 24V ZB5AS84W3B Schneider Electric 1: 96,78 € 5In Stock	Mfr. Part No. ZB5AS84W3B Mouser Part No 996-ZB5AS84W3B	Schneider Electric	Switch Actuators Illuminated E.stop plast WH red 24V Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	5In Stock	96,78 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Push Turn			Panel
Switch Actuators TRIGGER ACTION PUSH PULL MSHRM 40MM RED ZB5AT84 Schneider Electric 1: 31,42 € 14In Stock	Mfr. Part No. ZB5AT84 Mouser Part No 996-ZB5AT84	Schneider Electric	Switch Actuators TRIGGER ACTION PUSH PULL MSHRM 40MM RED Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	14In Stock	31,42 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Head	22 mm Pushbutton Switches	ZB5 Series	Panel Mount
Switch Actuators Head E.stop plast grey mushr 30mm push ZB5AT844 Schneider Electric 1: 31,42 € 18In Stock	Mfr. Part No. ZB5AT844 Mouser Part No 996-ZB5AT844	Schneider Electric	Switch Actuators Head E.stop plast grey mushr 30mm push Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	18In Stock	31,42 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Head	22 mm Pushbutton Switches	ZB5 Series	Panel Mount
Switch Actuators PLASTIC PUSH PULL E-STOP W/STATUS INDI ZB5AT8643M Schneider Electric 1: 78,38 € 6In Stock	Mfr. Part No. ZB5AT8643M Mouser Part No 996-ZB5AT8643M	Schneider Electric	Switch Actuators PLASTIC PUSH PULL E-STOP W/STATUS INDI Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	6In Stock	78,38 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Jumbo Mushroom	Emergency Stop Switches
Switch Actuators MUSHROOM PB OPERATOR ZB4BS864 Schneider Electric 1: 66,34 € 9In Stock	Mfr. Part No. ZB4BS864 Mouser Part No 996-ZB4BS864	Schneider Electric	Switch Actuators MUSHROOM PB OPERATOR Learn More about Schneider Electric xb4 zb4 22mm pushbuttons	Datasheet	9In Stock	66,34 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Jumbo Mushroom	Emergency Stop Switches
Switch Actuators EMERGENCY STOP HEAD RED PUSH PULL 60MM ZB4BX84 Schneider Electric 1: 35,72 € 5In Stock	Mfr. Part No. ZB4BX84 Mouser Part No 996-ZB4BX84	Schneider Electric	Switch Actuators EMERGENCY STOP HEAD RED PUSH PULL 60MM Learn More about Schneider Electric xb4 zb4 22mm pushbuttons	Datasheet	5In Stock	35,72 €	Min.: 1 Mult.: 1	Pushbutton Switch Actuators	Jumbo Mushroom	Emergency Stop Switches
Switch Actuators E.stop plastic red turn ZB5AS84W00 Schneider Electric 1: 58,47 € 3In Stock	Mfr. Part No. ZB5AS84W00 Mouser Part No 996-ZB5AS84W00	Schneider Electric	Switch Actuators E.stop plastic red turn Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	3In Stock	58,47 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Push Turn			Panel
Switch Actuators lluminated E.stop plastic red 110V ZB5AS84W2G Schneider Electric 1: 120,04 € 5In Stock	Mfr. Part No. ZB5AS84W2G Mouser Part No 996-ZB5AS84W2G	Schneider Electric	Switch Actuators lluminated E.stop plastic red 110V Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	5In Stock	120,04 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Push Turn			Panel
Switch Actuators E STOP WITH 421E KEY ZB5AS94412 Schneider Electric 1: 70,80 € 5In Stock	Mfr. Part No. ZB5AS94412 Mouser Part No 996-ZB5AS94412	Schneider Electric	Switch Actuators E STOP WITH 421E KEY Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	5In Stock	70,80 €	Min.: 1 Mult.: 1	Key Release Actuators	Pushbutton Head
Switch Actuators TRIGGER ACTION KEY RELEASE 40MM RED ZB5AS944 Schneider Electric 1: 95,76 € Non-Stocked Lead-Time 2 Weeks	Mfr. Part No. ZB5AS944 Mouser Part No 996-ZB5AS944	Schneider Electric	Switch Actuators TRIGGER ACTION KEY RELEASE 40MM RED Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	Non-Stocked Lead-Time 2 Weeks	95,76 €	Min.: 1 Mult.: 1	Key Release Actuators	Pushbutton Head
Switch Actuators MUSHROOM PB ZB4BS934 Schneider Electric 1: 70,80 € Non-Stocked	Mfr. Part No. ZB4BS934 Mouser Part No 996-ZB4BS934	Schneider Electric	Switch Actuators MUSHROOM PB Learn More about Schneider Electric xb4 zb4 22mm pushbuttons	Datasheet	Non-Stocked	70,80 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Jumbo Mushroom	Emergency Stop Switches		Panel Mount
Switch Actuators Head E.stop metal red mushr 30mm push ZB4BT844 Schneider Electric 1: 34,13 € Non-Stocked	Mfr. Part No. ZB4BT844 Mouser Part No 996-ZB4BT844	Schneider Electric	Switch Actuators Head E.stop metal red mushr 30mm push Learn More about Schneider Electric xb4 zb4 22mm pushbuttons	Datasheet	Non-Stocked	34,13 €	Min.: 1 Mult.: 1	Emergency Switch Actuators
Switch Actuators lluminated E.stop plastic red 230V ZB5AS84W2M Schneider Electric 1: 120,04 € Non-Stocked	Mfr. Part No. ZB5AS84W2M Mouser Part No 996-ZB5AS84W2M	Schneider Electric	Switch Actuators lluminated E.stop plastic red 230V Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	Non-Stocked	120,04 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Push Turn			Panel
Switch Actuators Head E.stop plast red mushr 60mm turn ZB5AS864 Schneider Electric 1: 62,26 € Non-Stocked	Mfr. Part No. ZB5AS864 Mouser Part No 996-ZB5AS864	Schneider Electric	Switch Actuators Head E.stop plast red mushr 60mm turn Learn More about Schneider Electric schneider xb5 zb5 plastic control signaling units	Datasheet	Non-Stocked	62,26 €	Min.: 1 Mult.: 1	Emergency Switch Actuators	Jumbo Mushroom	Emergency Stop Switches