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Red mushroom-head push button 22 mm momentary plastic bezel

Schneider Electric

Schneider Electric ZB5AC44 Mushroom Push Button 22 mm Momentary

SKU CH-AY8Z-BT3KX

A 22 mm red mushroom-head push button with momentary action, IP66 and NEMA 1, 2, 3, 4, 4X, 13 ratings for industrial control panels

  • Size22 mm
  • Product typeIndustrial Electrical Controls & Automation
  • 22 mm mounting fits standard panels
  • Momentary mushroom head enables quick emergency actuation
  • Red plastic head gives high visibility in industrial settings
  • IP66 and NEMA 1, 2, 3, 4, 4X, 13 ratings protect against dust and water ingress
  • Certified to IEC 60947, UL 508, CSA C22.2 No. 14 and other international standards

Schneider Electric ZB5AC44 Mushroom Push Button

This Schneider Electric ZB5AC44 is a 22 mm mushroom-head push button designed for industrial control panels and automation systems. It provides a momentary contact action suitable for start, stop or reset functions in machinery and process equipment. The red plastic head and bezel ensure high visibility in demanding environments. Panel builders and maintenance engineers will find it fits standard 22 mm cut-outs.

Upgrades from smaller or non-mushroom operators

The 30 mm mushroom diameter gives a larger actuation surface than flush or extended-head buttons, reducing the chance of missed operation when wearing gloves or in low-light conditions. The momentary action suits functions that must not remain latched, unlike maintained mushroom types used for emergency stop. The jump is worth it when an application needs a conspicuous, momentary input that meets stringent ingress and mechanical standards.

Handles wet, dusty and vibration-prone installations

Rated IP66 and NEMA 1, 2, 3, 4, 4X and 13, the operator resists powerful water jets, dust ingress and corrosion in indoor or outdoor settings. Compliance with IEC 60947-5-1, IEC 60068-2-6 and IEC 60068-2-27 confirms suitability for vibration and shock environments. It is not suited for applications requiring a maintained latch or key-release mechanism.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 55% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameSCHNEIDER ELECTRIC
Product typeIndustrial Electrical Controls & Automation
Size & build
Size22 mm

Questions about this item

What panel cut-out diameter does the 22 mm mushroom head require?

The operator fits a standard 22 mm panel cut-out; the mushroom head itself measures 30 mm across.

How is the contact block secured to the operator, and what step is often missed?

The contact block snaps onto the back of the operator; the latch must click fully into place or the circuit will not make.

Which IP rating applies to the sealed head, and when should the operator be replaced?

The head is rated IP66; replace the complete operator if the red mushroom head cracks or the sealing gasket deteriorates.

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