Schneider Electric ZB4BA38 Push-button Switch 22mm

Product Description

The SCHNEIDER ELECTRIC ZB4BA38 is a 22 mm flush-mount, momentary push-button switch operator designed for industrial control panel applications. It features a round, green metal pushbutton head with no illumination. The momentary (MO) action means the contact state returns to its normal position as soon as the button is released. Rated NEMA 4X and NEMA 13, this switch is built to resist dust, oil, and corrosion, making it appropriate for demanding environments. The metal construction and flush profile keep it suitable for high-cycle industrial use. Licensed electricians and controls technicians are the primary installers for this type of operator.

This operator is suited for use in industrial and commercial control panels, machine guarding enclosures, and motor control centers where a start, stop, or momentary-signal function is required. The green color convention is commonly associated with start or run functions in machine control applications. The 22 mm mounting hole diameter is a widely adopted industry standard, making this operator compatible with 22 mm operator mounting cutouts in panel doors and enclosures. The flush-button profile reduces the risk of accidental actuation in congested panel layouts.

Key Features

• 22 mm mounting hole diameter — industry-standard cutout size
• Momentary (MO) operation — contact returns to normal state upon release
• Flush, round, green metal pushbutton head — non-illuminated
• Metal push-button material for durability in high-cycle environments
• NEMA 4X and NEMA 13 ratings for dust, oil, and corrosion resistance
• Certified to UL 508, CSA C22.2 No. 14, EN/IEC 60947-5-1, and multiple additional international standards

Compatibility

Designed as an OEM-style replacement operator for 22 mm push-button switch assemblies used in industrial control panel and machine control applications.

Installation Notes

Installation should be performed by a licensed electrician or qualified controls technician in accordance with NFPA 70 (NEC) and applicable local codes. De-energize and lock out the control panel before removing any existing operator or making wiring connections. Verify that the panel enclosure cutout is 22 mm in diameter and that the enclosure rating meets the requirements of the application before mounting. Do not over-tighten the mounting hardware, as this can crack the operator body or distort the seal.