Schneider Electric ZB4BW633 Push-button Switch 22mm

Product Description

The SCHNEIDER ELECTRIC ZB4BW633 is a 22 mm non-illuminated push-button switch with a maintained (MA) action and an extended mushroom-head operator. Built with a metal push-button body in green, this switch is designed for panel-mount control applications where the operator stays in position after each actuation. The 22 mm mounting hole diameter is a globally standardized format, making this unit a drop-in fit for most industrial and commercial enclosure cutouts. At 0.11 pounds, it is a compact, lightweight control component rated NEMA 4X and 13 for wash-down and dustproof environments.

This switch is suited for use in industrial control panels, machine safety circuits, motor control centers, and process control enclosures. The maintained operation type makes it appropriate for start/stop, enable/disable, or selector-style control logic where the switch must hold its state between actuations. It is typically installed by licensed electricians or qualified control panel builders working on machinery, HVAC control panels, water treatment equipment, and similar industrial systems. The green mushroom-head operator is a widely recognized convention for run or start functions in panel design.

Key Features

• 22 mm mounting hole diameter — fits standard industrial panel cutouts
• Maintained (MA) action — switch holds position after actuation
• Extended mushroom-head operator — green, round, metal construction
• Non-illuminated — no lamp or LED assembly required
• NEMA 4X and NEMA 13 rated — suitable for wet, dusty, and corrosive environments
• Meets UL 508, CSA C22.2 No. 14, EN/IEC 60947-5-1, and multiple international standards

Compatibility

Designed as an OEM-style replacement or new-installation push-button switch for industrial control panels using the standard 22 mm mounting format.

Installation Notes

Installation should be performed by a licensed electrician or qualified control panel technician in accordance with NEC Article 430 and applicable local codes. De-energize and lock out the control panel before installing or replacing any push-button switch. Verify the mounting hole diameter and panel thickness are within the switch body tolerances before securing the unit. Confirm that the maintained-action logic is appropriate for the control circuit before commissioning.