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

ABB Emergency Stop Push Button Head, 40mm Push Button Diameter, 22.5mm Cut-out Diameter - 1SFA611511R1101

This emergency stop push button head provides a clearly visible, manually operated means to interrupt machinery in industrial control panels. Designed for panel mounting in automation and electrical systems, it delivers immediate tactile actuation with an illuminated indicator to show status. The unit is suitable where a prominent, quick-access stop control is required and where hazardous-area certification is not necessary.

Features and Benefits:

• 22.5mm cutout for Compact panel integration
  Illuminated indicator for clear operational status visibility
  Pull release action for deliberate reset after activation
  40mm red mushroom cap for Rapid manual engagement
  Plastic construction offering corrosion‑resistant handling
  Dual ingress ratings providing internal and external protection

Applications

• Suitable for emergency stop stations in assembly lines
  Ideal for control panels in factory automation racks
  Used with machinery requiring visible stop annunciation
  Can be used for retrofit upgrades of existing control enclosures
  Used for safety interfaces in electrical distribution cabinets

What actuation method does it employ and why does that matter?

It uses a pull‑release mechanism so the operator must perform a deliberate reset action, reducing accidental re‑engagement and ensuring control is restored intentionally.

How does the illumination aid maintenance or diagnostics?

The built‑in light offers immediate Visual confirmation of the button’s state, assisting technicians in locating tripped circuits and speeding fault‑finding during shutdowns.

What ingress protection levels are provided and how do they differ?

It carries IP20 protection for general enclosed‑panel environments and an IP66 rating for resistance to strong jets of water and dust when mounted appropriately, allowing use across varied conditions.

Is this unit suitable for hazardous‑area installations?

It is not certified for hazardous areas, so it should not be specified where explosion‑risk certification is required.