Schneider Electric ZB4BC44 Momentary Push-button Switch

Product Description

The SCHNEIDER ELECTRIC ZB4BC44 is a momentary push-button switch designed for industrial control panel applications. It features a red, round extended mushroom head operator machined from metal, and mounts through a 22 mm panel cutout. The switch is non-illuminated and returns to its original position immediately upon release, making it well suited for stop, emergency-reset, or momentary-command functions. It carries a NEMA 4X and NEMA 13 enclosure rating, indicating resistance to washdown, dust, and corrosive environments. Licensed electricians and control panel builders install this switch in accordance with NEC and applicable local electrical codes.

This switch is used in residential, commercial, and industrial control panels where a momentary operator is required. The 22 mm mounting diameter is a widely adopted standard in industrial pushbutton and selector switch assemblies. The extended mushroom head profile makes it easy to locate and actuate quickly, which is common in machine control, pump control, and process equipment panels. The metal construction suits demanding environments where plastic operators would be subject to wear or chemical exposure.

Key Features

• 22 mm mounting hole diameter fits standard industrial control enclosure cutouts
• Momentary (MO) operation — returns to off position on release
• Red extended mushroom head operator for fast visual identification and actuation
• Metal push-button construction for durability in harsh environments
• Non-illuminated operator — no internal lamp or LED required
• NEMA 4X and NEMA 13 rated for washdown, dust-tight, and corrosion-resistant applications
• Certified to 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 momentary push-button operator for 22 mm industrial control panel assemblies. No specific compatible model numbers were provided in the product data.

Installation Notes

Installation should be performed by a licensed electrician with the control panel de-energized and locked out per NFPA 70E lockout/tagout procedures. The 22 mm mounting hole should be clean and free of burrs before inserting the operator. Verify the enclosure NEMA rating requirements of the application match the switch rating before installation. Do not exceed the electrical ratings of the contact block attached to this operator.