Schneider Electric ZB4BA335 Push-button Switch 22mm

Product Description

The SCHNEIDER ELECTRIC ZB4BA335 is a momentary push-button switch designed for industrial and commercial control panel applications. It features a flush-style, round black metal operator in a nonilluminated configuration. Rated for NEMA 4X and 13 enclosures, this switch meets a broad set of international standards including UL 508, CSA C22.2 No. 14, and EN/IEC 60947-5-1. The 22 mm mounting hole diameter fits standard 22 mm cutout panels, making it a direct drop-in for most control stations. Licensed electricians and panel builders are the primary installers. The switch weighs approximately 0.1 pounds and is sold individually.

This push-button switch is suited for industrial control panels, machine operator interfaces, and commercial electrical enclosures requiring a durable metal operator with momentary action. Its NEMA 4X rating makes it appropriate for washdown and corrosive environments. The flush-mount profile keeps the operator recessed, reducing the risk of accidental actuation in high-traffic or congested panel layouts. It is commonly installed in manufacturing, process control, and building automation settings where standardized 22 mm components are specified.

Key Features

• 22 mm mounting hole diameter fits standard 22 mm panel cutouts
• Momentary (MO) operation returns to default position upon release
• Flush-style round black metal push button minimizes accidental actuation
• Nonilluminated operator — no lamp or LED module required
• NEMA 13 and 4X ratings for oil-tight and washdown-environment use
• Certified to UL 508, CSA C22.2 No. 14, EN/IEC 60947-5-1, and additional international standards

Compatibility

Designed as an OEM-style replacement or new-installation operator head for standard 22 mm push-button control stations and panel-mount switch assemblies requiring a momentary, nonilluminated, flush-style operator.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC requirements and the panel manufacturer's documentation. De-energize and lock out the control panel before installing or replacing the operator head. Verify the panel cutout measures 22 mm before mounting. Do not overtighten the mounting hardware, as metal operator housings can crack the surrounding panel face if excessive force is applied.