Schneider Electric ZB4BH33 Illuminated Push-button Switch

Product Description

The SCHNEIDER ELECTRIC ZB4BH33 is an illuminated, maintained-action push-button switch designed for industrial control panel applications. It features a 22 mm mounting hole diameter, a round green metal extended (straight) push button, and an integrated LED lamp for operator status indication. The maintained (MA) operation type means the switch holds its state after each press, making it well-suited for on/off control functions. Licensed electricians and control panel builders install this switch as part of machine control, automation, and process equipment assemblies. It carries NEMA 4X and 13 ratings, confirming suitability for wet, dusty, and corrosive environments.

This push-button switch is used in commercial and industrial control panels, automation enclosures, and machine operator stations where a maintained-contact, illuminated switch is required. The green button color follows common industry convention for run or start functions. Its NEMA 4X rating makes it appropriate for wash-down environments and outdoor enclosures. Electricians and panel integrators specify this switch for applications requiring a durable metal operator with integrated LED indication and compliance with UL 508 and IEC 60947-5-1 standards.

Key Features

• Maintained (MA) operation holds switch state after each actuation
• Integrated LED lamp provides clear operator status indication
• 22 mm mounting hole diameter fits standard industrial panel cutouts
• Round green metal extended push button with corrosion-resistant construction
• NEMA 4X and 13 rated for wet, dusty, and corrosive environments
• Certified to UL 508, UL Listed, 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 operator for 22 mm industrial control panel assemblies where maintained-action illuminated switches are specified.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize the control panel and verify zero voltage before removing or installing any switch operator. Ensure the panel cutout matches the 22 mm mounting hole diameter before mounting. The NEMA 4X rating requires use of a compatible sealed enclosure and proper gasket seating to maintain ingress protection.