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Black 22 mm mushroom push button with metal head and bezel

Schneider Electric

Schneider Electric ZB4BT2 22 mm Mushroom Push Button Black

SKU CH-2SW4-GQH8E

A 22 mm mushroom-head push button with maintained action, metal construction, IP66 sealing and NEMA 1, 2, 3, 4, 4X, 13 ratings

  • Size22 mm
  • Product typeIndustrial Electrical Controls & Automation
  • Reliable operation in harsh environments with IP66 and NEMA 1, 2, 3, 4, 4X, 13 ratings
  • Durable metal construction for long service life in industrial panels
  • Safe emergency stop function meeting IEC 60947-5-5 and UL 508 standards
  • Compact 22 mm mounting fits standard panel cut-outs
  • Vibration and shock resistance per IEC 60068-2-6 and IEC 60068-2-27

Schneider Electric ZB4BT2 22 mm Mushroom Push Button

The Schneider Electric ZB4BT2 is a 22 mm mushroom head push button operator designed for industrial control panels and automation systems. Its black metal construction suits operators who need a maintained-action switch for machinery start or stop functions. The IP66 and NEMA 1, 2, 3, 4, 4X, 13 ratings confirm suitability for harsh indoor and outdoor environments.

40 mm maintained mushroom head with metal bezel

The critical specification is the 40 mm maintained mushroom head combined with a full metal bezel and head assembly. This latching action keeps the circuit engaged until the operator twists or pulls to release, distinguishing it from momentary alternatives. The 22 mm mounting diameter fits standard industrial cut-outs without adapters.

Panel mounting with standard 22 mm cut-out

Installation uses a typical 22 mm panel cut-out secured by a locking nut behind the panel. The metal bezel resists cross-threading during tightening, but over-torquing can distort the seal and reduce the IP66 rating. Wiring access depends on the contact block chosen separately, so verify terminal spacing before final assembly.

How it compares

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

Price $25.99
Pricier than about 58% 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 does the 40 mm mushroom head size mean for panel operation?

The 40 mm mushroom head provides a large, easy-to-grasp actuator for reliable manual operation in industrial control panels.

What do the NEMA 1, 2, 3, 4, 4X, 13 and IP66 ratings cap in practice?

These ratings confirm the operator is protected against dust, water jets, oil, coolant and corrosion for indoor and outdoor industrial use.

What does the 22 mm mounting size require for installation?

The operator fits a standard 22 mm panel cut-out and uses a metal bezel and metal head for secure front-of-panel mounting.

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