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Select all	Attribute	Value
	Brand	ABB
	Product Type	Emergency Stop Push Button Head
	Cutout Diameter	22.5mm
	Push Button Colour	Red
	Push Button Actuation	Key Release
	Push Button Style	Mushroom
	Push Button Material	Plastic
	IP Rating	IP20, IP66
	Illuminated	No
	Push Button Diameter	40mm
	Hazardous Area Certification	NO

	Select all
	Brand ABB
	Product Type Emergency Stop Push Button Head
	Cutout Diameter 22.5mm
	Push Button Colour Red
	Push Button Actuation Key Release
	Push Button Style Mushroom
	Push Button Material Plastic
	IP Rating IP20, IP66
	Illuminated No
	Push Button Diameter 40mm
	Hazardous Area Certification NO

Datasheet - 1SFA611525R1301

COO (Country of Origin):: CN

ABB Emergency Stop Push Button Head, 40mm Push Button Diameter, 22.5mm Cut-out Diameter - 1SFA611525R1301 MPEK4-13R

This emergency stop push button head provides a mechanical means of Rapid shut-down for industrial control panels. It is designed as a large-area mushroom actuator to enable quick manual intervention in automation and electrical systems. The unit is non-illuminated and intended for environments requiring either general-purpose or weather-protected enclosure mounting.

Features and Benefits:

• Key release actuation ensures deliberate reset after stop
• Red plastic mushroom for immediate Visual recognition
• IP20/IP66 enclosure rating supports indoor and outdoor protection
• 22.5mm cutout compatibility for standard panel integration
• 40mm diameter actuator offers large contact area for fast operation

Applications

• Suitable for safety stop stations on production lines
• Ideal for control panels in machine tools and presses
• Used with motor drives and starter enclosures requiring Rapid isolation
• Can be used for emergency shutdown points on conveyors

How is the unit released after activation?

It uses a key-operated release mechanism that requires a dedicated release key to return the actuator to the ready position.

What materials are used for the actuator and how does that affect handling?

The head is moulded from plastic, providing a durable, lightweight actuator that is easy to depress under urgent conditions.

Can it be mounted in sealed enclosures exposed to washdown conditions?

Yes, the device supports IP66 levels of ingress protection when installed in appropriately rated housings, offering resistance to strong water jets.

Which panel aperture is required for installation?

Installation requires a 22.5mm diameter panel cutout to secure the mounting assembly.

ABB, Key Release, Emergency Stop Push Button Head 40 mm Diameter

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