Schneider Electric ZB4BR3 Momentary Push-button Switch 22mm

Product Description

The SCHNEIDER ELECTRIC ZB4BR3 is a momentary push-button switch operator designed for industrial control panel applications. Featuring a 22 mm mounting hole diameter, this unit uses an extended mushroom-head style button in green with a round profile. The operator is non-illuminated and constructed with a metal push-button body, making it a durable mechanical interface for control circuits. It carries a NEMA 4X and NEMA 13 rating, indicating suitability for environments that require protection against dust, oil, and water ingress. Licensed electricians and control panel integrators are the typical installers of this component.

This push-button operator is suited for use in industrial and commercial control panel assemblies where a momentary contact action is required. Common applications include machine start and stop controls, conveyor systems, motor starters, and process equipment panels. The green color convention is widely associated with start or run functions in control circuit wiring. The 22 mm form factor is a standard panel cutout size used across a broad range of industrial enclosures and operator interface stations.

Key Features

• 22 mm mounting hole diameter — standard industrial panel cutout size
• Momentary (MO) operation for momentary-contact control circuits
• Extended mushroom-head round operator in green metal construction
• Non-illuminated design — no lamp or LED module required
• NEMA 4X and NEMA 13 rated for dust-tight and oil-tight environments
• Meets multiple international standards including UL 508, CSA C22.2 No. 14, and EN/IEC 60947-5-1

Compatibility

Designed as a standard 22 mm momentary push-button operator for industrial control panels and enclosures using the 22 mm mounting hole format. No specific compatible model numbers were provided in the product data.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize the control panel and verify the absence of voltage before mounting or wiring this operator. The 22 mm panel cutout should be clean and burr-free to ensure proper seating and NEMA-rated sealing. Do not overtighten the mounting hardware, as this can deform the operator body or compromise the ingress protection rating.