Schneider Electric ZB5AS55 Push-button Switch 22mm Yellow

Product Description

The SCHNEIDER ELECTRIC ZB5AS55 is a maintained-action, nonilluminated push-button switch designed for industrial control panel applications. It features a yellow, round, extended mushroom-head operator mounted through a 22 mm panel cutout. The maintained (MA) operation type means the switch holds its last activated position until manually reset, making it suitable for applications requiring a latched on or off state. The plastic operator body is rated NEMA 4X and 13 for protection against dust, oil, and washdown conditions. Licensed electricians and panel builders are the primary installers of this device.

The ZB5AS55 is used in residential and commercial control panels, machine operator stations, and industrial enclosures where a latched pushbutton control is required. Its 22 mm mounting diameter is a widely accepted standard in modular control component systems. The mushroom-head profile provides an enlarged contact surface for reliable manual actuation. This switch is a common fit for motor control centers, conveyor systems, and general-purpose machine control stations requiring a non-illuminated, maintained-action operator.

Key Features

• Maintained (MA) operation holds switch position after actuation — no continuous force required
• Yellow round mushroom-head operator for high-visibility manual control
• Nonilluminated design — no internal lamp or LED assembly required
• NEMA 4X and 13 rated for oil-tight and washdown environments
• 22 mm standard mounting hole diameter fits common modular operator housings
• Plastic operator body — lightweight and corrosion resistant

Compatibility

Designed as an OEM-style replacement or new-installation push-button operator for 22 mm modular control station assemblies in industrial and commercial control panel applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC guidelines and applicable local codes. De-energize and lock out the control panel before mounting or wiring the switch. The 22 mm panel cutout should be clean and free of burrs before inserting the operator to ensure proper seating and IP integrity. Do not overtighten the mounting nut, as this can crack the plastic operator body or distort the seal.