Schneider Electric ZB4BW543 Push-button Switch 22mm

Product Description

The SCHNEIDER ELECTRIC ZB4BW543 is a non-illuminated, momentary-action push-button switch designed for industrial control panel applications. Featuring a flush-mount, round red metal operator with a 22 mm mounting hole diameter, this switch provides tactile, momentary contact closure for start, stop, or signal functions. The metal construction and NEMA 4X and 13 ratings make it suitable for environments exposed to dust, oil, and washdown conditions. Licensed electricians and panel builders install this switch in machine control, process equipment, and automation systems.

This push-button switch is used in industrial and commercial control panels where a momentary, non-latching input is required. The red operator color is commonly assigned to stop or emergency-stop functions in machine guarding and process control wiring. The 22 mm form factor is a widely adopted industry standard, making this switch compatible with standard 22 mm panel cutouts found across a broad range of enclosures and operator interface stations. It is sold individually and is a direct replacement or expansion component for existing ZB4 series operator assemblies.

Key Features

• 22 mm mounting hole diameter — standard industrial panel cutout size
• Momentary (MO) operation — returns to default state upon release, no latching
• Flush-mount round red metal operator — durable and corrosion-resistant
• Non-illuminated design — no lamp or LED required
• NEMA 4X and 13 rated — suitable for wet, oily, and dusty environments
• Certified to UL 508, CSA C22.2 No. 14, EN/IEC 60947-5-1, and multiple marine and international standards

Compatibility

Designed as an OEM-style replacement or expansion component for 22 mm push-button operator assemblies in industrial control panels. Specific compatible contact blocks and body assemblies were not identified in the available product data.

Installation Notes

Installation is performed by a licensed electrician in accordance with NEC requirements and applicable local codes. De-energize the control panel and verify zero voltage before beginning work. The 22 mm panel cutout should be clean and free of burrs prior to mounting. Do not over-tighten the mounting nut, as this may crack the operator body or distort the panel surface.