Schneider Electric XB4BS8442 Harmony XB4 Emergency Stop Push Button, 40mm Mushroom Head, IP66

MPN: XB4BS8442
PPN: SCH-XB4BS8442

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Description

This Harmony XB4 emergency stop / shutdown 40mm mushroom head modular red push button operates with a latched turn to release mechanism. It has a metal bezel. This emergency stop / shutdown button, also called EMS (Emergency Machine Stop) and EMO (Emergency Off), is easily installed into a standard 22mm diameter cut-outs and connected with simple screw-clamp connections. It is clearly distinguishable visually at a distance thanks to a clear color and a prominent 40mm mushroom shape. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66, making it ideal for operation in harsh environments.

Features

The XB4BS8442 is a 40mm red mushroom head Emergency Stop (E-Stop) push button that features a "Trigger Action" and mechanical latching. This ensures that the electrical contacts only change state once the button is fully actuated, preventing accidental stops and complying with ISO 13850 and IEC 60204-1 safety requirements for machine guarding.
Designed with a secure "turn-to-release" mechanism, this button remains latched in the depressed position until a deliberate clockwise twist is applied. This prevents the machine from being restarted prematurely or accidentally, ensuring that the operator must physically acknowledge the cleared hazard before the control circuit can be re-energized.
Featuring the legendary Harmony XB4 metal construction, this 22mm modular unit is built for extreme durability. With IP66, IP67, IP69, and IP69K ratings, it is completely dust-tight and resistant to high-pressure hot water jets, making it the ideal choice for food processing, automotive, and heavy manufacturing sectors where chemical exposure and physical impacts are common.
The Schneider Harmony XB4 series uses a modular mounting collar system that allows for tool-free contact block replacement once the base is installed. This reduces maintenance downtime significantly; if a contact block wears out, you can simply snap on a new ZBE102 block without having to replace the entire mushroom head or rewire the panel from scratch.

Documentation & Downloads

Specifications

Key Specifications

Country of Origin	Czechia, France, United States

Depth	82 mm

Important Information Attributes

Persona Type Ids	BM9, EU, LC, OM, OM8, PB, SC, SI, VR
Market Segmentation Id	COMMERCIAL, INDUSTRIAL
Customizable	no, 0
Electrical Reliability	λ < 10exp(-6) 5 V 1 mA in clean environment IEC 60947-5-4, λ < 10exp(-8) 17 V 5 mA in clean environment IEC 60947-5-4
Reset	turn to release, turn to release
Type Of Operator 3 Type Of Operator	trigger action and mechanical latching
[Ie] Rated Operational Current	3 A 240 V, AC-15, A600 IEC 60947-5-16 A 120 V, AC-15, A600 IEC 60947-5-10.1 A 600 V, DC-13, Q600 IEC 60947-5-10.27 A 250 V, DC-13, Q600 IEC 60947-5-10.55 A 125 V, DC-13, Q600 IEC 60947-5-1, 1.2 A 600 V, AC-15, A600 IEC 60947-5-1
Carbon Footprint Of The Distribution Phase [A4]	0.0152247339, 0 kg CO2 eq.
Carbon Footprint Of The Installation Phase [A5]	0 kg CO2 eq., 0.000510688
Carbon Footprint Of The Use Phase [B2 B3 B4 B6]	kg CO2 eq., 0
Local Publishable Date	2026-03-26
Stocking Flag	Y
Weee Scope	In
Scope Perimeter	At least in Europe
End Of Life Doc Ref	ENVEOLI2201004EN
Reach Full Compliance Status	Free of Substances of Very High Concern above the threshold
Reach Compliance Directive	Free of Substances of Very High Concern above the threshold
Rohs Eur Status	Compliant
Rohs Eur Full Compliance Status	Compliant
China Rohs Label	1
Without Single Use Plastic	Yes
Tier Id	1
Function Option Id	STANDARD
Product Kit Identifier	N
Average Percentage Of Recycled Plastic Content	16 %
Compatibility Code	XB4
Contacts Material	silver alloy (Ag/Ni)
Contacts Usage	standard contacts
Electrical Shock Protection Class	class I conforming to IEC 60536
Head Type	standard
Mounting Diameter	22.5 mm
Operator Profile	red mushroom Ø 40 mm, unmarked
Product Availability	Stock - Normally stocked in distribution facility
Protective Treatment	TH
Resistance To High Pressure Washer	7000000 Pa 55 °C 0.1 m
Sale Per Indivisible Quantity	1
Shock Resistance	30 gn 18 ms) half sine wave acceleration IEC 60068-2-2750 gn 11 ms) half sine wave acceleration IEC 60068-2-27
Sustainable Packaging	Yes
Total Lifecycle Carbon Footprint	1 kg CO2 eq.
Vibration Resistance	5 gn (f= 2-500 Hz) conforming to IEC 60068-2-6
Contacts Composition 6	1 NC
Database Version	2016-11
Pcr Version	PCR-ed3-EN-2015 04 02
Type Of Verification For The Pep	Independent internal review
Functional-unit Description	Emergency stop push button which helps to shut off machinery in an emergency situation when there is a risk of injury or the workflow requires stopping. Product meets the international standards as EN/IEC 60947-1 and EN/IEC 60204 -1 during 20 years.
Energy Model - Manufacturing [A1-a3]	Energy model used: Pisek, Czech Republic
Energy Model - Use [B6]	Electricity mix; AC; 120V; US
Recyclability Potential In %	59
Width Nominal	40 mm
[Ui] Rated Insulation Voltage	600 V 3)IEC 60947-1
Cap/Operator Or Lens Colour	red
Short-circuit Protection	10 A cartridge fuse gG IEC 60947-5-1
Package Weight(Lbs)	124.000 g
Take-back	No
Customs Code	8536509065

Persona Type Names	Charge Point Operator, End User, Contractor, Original Equipment Manufacturer, OEM - Control Panelbuilder, Panel Builder, Electrician, System Integrator, IT Channel Partner
Market Segmentation	Commercial, Industrial
Electrical Durability	1000000 cycles, AC-15, 2 A 230 V 3600 cyc/h 0.5 IEC 60947-5-1 appendix C1000000 cycles, AC-15, 3 A 120 V 3600 cyc/h 0.5 IEC 60947-5-1 appendix C1000000 cycles, AC-15, 4 A 24 V 3600 cyc/h 0.5 IEC 60947-5-1 appendix C, 1000000 cycles, DC-13, 0.2 A 110 V 3600 cyc/h 0.5 IEC 60947-5-1 appendix C, 1000000 cycles, DC-13, 0.5 A 24 V 3600 cyc/h 0.5 IEC 60947-5-1 appendix C
Product Or Component Type	emergency switching off push-button, emergency stop push-button
Shape Of Screw Head	cross Philips no 1, cross pozidriv No 1slotted flat Ø 4 mm, slotted flat Ø 5.5 mm
Certificate Agency	CSA, LROS (Lloyds register of shipping), BV, UL Listed, DNV
Terminals Description Iso N°1	(21-22)NC, (21-22)NC
Carbon Footprint Of The End-of-life Phase [C1 To C4]	0.013708541, 0 kg CO2 eq.
Carbon Footprint Of The Manufacturing Phase [A1 To A3]	1 kg CO2 eq., 1.2461302442
Local Data Status	Publishable
Return Indicator	Y
Stock Policy	1
Weee Product Category	5
Eoli Availability Display	Yes
Product Repair Index Dam Doc	XB4BS8442-ENVREPAIR-A-EN
Reach Full Compliance Status Id	NOT_CONTAINING_SVHC
Rohs Eur In Scope	No
Rohs Eur Conformity Date	1930
China Rohs In Scope	Yes
With Recycled Cardboard	Yes
Product Contributes To Saved And Avoided Emissions	No
Tier	1
Function Option	Standard
Average Percentage Of Recycled Metal Content	20 %
Bezel Material	chromium plated metal
Contact Operation	slow-break
Contacts Type And Composition	1 NC
Device Short Name	XB4
Fixing Collar Material	zamak
Mechanical Durability	300000 cycles
Operating Travel	1.5 mm NC changing electrical state)4.3 mm total travel)
Positive Opening	with IEC 60947-5-1 appendix K
Product Repair Index	A
Range Of Product	Harmony XB4
Returnability	Yes
Shape Of Signaling Unit Head	round
Software Version	EIME v5.9.3
Tightening Torque	0.8-1.2 N.m IEC 60947-1
Type Of Operator	trigger action and mechanical latching
Weee Label	The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins.
Pep Code	ENVPEP2201004EN
Pep Verification Date	2022-01-01
Psr Version	PSR-0005-ed2-EN-2016 03 29
Data Source	extrapolated product
Reference Lifetime In Y	20
Energy Model - Installation [A5]	Electricity mix; AC; 120V; US
Energy Model - End Of Life [C1-c4]	Electricity mix; AC; 120V; US
Height Nominal	47 mm
[Ith] Conventional Free Air Thermal Current	10 A IEC 60947-5-1
[Uimp] Rated Impulse Withstand Voltage	6 kV IEC 60947-1
Connections - Terminals	screw clamp terminals, = 1 x 0.22 mm² without cable end IEC 60947-1
Nbr. Of Units In Pkg.	1
Product Repair Index - Dam Document Id	XB4BS8442-ENVREPAIR-A-EN
Warranty (In Months)	18

Environment Attributes Main

Ambient Air Temperature For Operation	-40-70 °C, -40-70 °C
Ip Degree Of Protection	IP66 IEC 60529, IP67, IP69, IP69K
Take Back	No
Recycled Metal Content At Cr Level	20 %
Toxic Heavy Metal Free	Yes
Carbon Footprint	1.2755742071
Environmental Disclosure	ENVPEP2201004EN
Packaging Made With Recycled Cardboard	Yes
Reach Free Of Svhc	Yes
Pep Code	ENVPEP2201004EN
Pcr Version	PCR-ed3-EN-2015 04 02
Type Of Verification For The Pep	Independent internal review

Ambient Air Temperature For Storage	-40-70 °C, -40-70 °C
Nema Degree Of Protection	NEMA 13, NEMA 4X, UL type 4X/13
Reach Free Shvc	Yes
China Rohs Regulation	X
Mercury Free	Yes
Circularity Profile	ENVEOLI2201004EN
Eu Rohs Directive	Compliant
Packaging Without Single Use Plastic	Yes
Reach Regulation	Free of Substances of Very High Concern above the threshold
Pep Verification Date	2022-01-01
Psr Version	PSR-0005-ed2-EN-2016 03 29