Schneider Electric ZB5AC4 Momentary Push Button Switch 22mm

Product Description

The SCHNEIDER ELECTRIC ZB5AC4 is a momentary-action, nonilluminated push-button switch designed for industrial control panel applications. It features a red, round, extended mushroom-head operator made of plastic, mounted through a 22 mm panel cutout. The switch carries UL 508 listing along with CSA, EN/IEC 60947-5-1, and multiple marine and international certifications, making it suitable for demanding environments. The NEMA 4X and NEMA 13 ratings indicate resistance to dust, oil, and corrosive washdowns. Electricians and panel builders install this switch as a control operator in machine control, conveyor, pump, and automation panel assemblies.

The ZB5AC4 is suited for use in industrial and commercial control enclosures where a momentary-contact operator is required. Its extended mushroom-head profile provides a large, easy-to-actuate surface, which is practical in applications where operators may be wearing heavy gloves or where quick emergency-style actuation is needed. It is a replacement or add-on operator head that mounts in standard 22 mm control station cutouts commonly found in industrial machinery, process control panels, and utility equipment rooms.

Key Features

• Momentary (MO) action — returns to neutral position on release
• 22 mm mounting hole diameter fits standard industrial control station cutouts
• Extended mushroom-head shape in red for high-visibility identification
• Nonilluminated operator — no lamp or wiring for illumination required
• NEMA 4X and NEMA 13 rated for dust-tight, oil-tight, and corrosion-resistant installations
• Certified to UL 508, CSA C22.2 No. 14, EN/IEC 60947-5-1, EN/IEC 60947-5-4, and multiple marine classification standards including DNV, GL, and RINA

Compatibility

Designed as an OEM-style operator head for standard 22 mm industrial push-button control station assemblies. No specific compatible model numbers were provided in the product data.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NFPA 70 (NEC) and applicable local codes. De-energize and lock out the control panel before removing or installing any push-button operator. The operator head mounts through a 22 mm panel cutout and secures with the appropriate contact block or body assembly — confirm the contact block series is compatible before installation. Do not exceed the rated environmental and electrical specifications of the switch assembly.