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Black 22 mm mushroom-head push button with plastic bezel

Schneider Electric

Schneider Electric XB5AC21 22 mm Mushroom Head Push Button Momentary

SKU CH-B8H9-MEARJ

A 22 mm mushroom-head push button with momentary action, 10 A at 600 V AC rating, IP65/IP69K sealing and NEMA 13/4X enclosure

  • Size22 mm
  • Product typeIndustrial Electrical Controls & Automation
  • Momentary action for precise control
  • 22 mm mounting fits standard panels
  • 40 mm mushroom head ensures easy operation
  • IP65 IP69 IP69K rated for harsh environments
  • NEMA 13 4X enclosure rating for durability

Schneider Electric XB5AC21 Mushroom Push Button

The Schneider Electric XB5AC21 is a 22 mm mushroom-head push button designed for industrial control panels. It provides momentary action with a single normally-open contact rated at 10A at 600V AC. The operator suits machinery start or reset functions where a large, visible actuator is required.

Contact rating and environmental headroom

The 1NO contact carries an A600/Q600 NEMA designation for reliable switching in standard control circuits. The head is rated NEMA 13, 4X and IP65, IP69, IP69K, resisting dust, water jets and high-pressure washdown. It is not suited for applications needing maintained latching or multiple contact blocks.

Thermals noise and power draw

As a passive electromechanical operator, the unit generates no heat and produces no audible noise during actuation. Power draw is limited to the control circuit connected through the 10A contact. The plastic bezel and head material withstand repeated industrial use without active cooling.

How it compares

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

Price $36.99
Pricier than about 66% 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

Will the 22 mm mushroom head fit the existing 22 mm panel cut-outs on my older control panel?

Yes, the operator is sized for a standard 22 mm mounting hole, so it matches the cut-outs already drilled in your panel.

How can I confirm the momentary action is working correctly after wiring the 1NO contact?

Press the black 40 mm mushroom head; the circuit should close only while you hold it down and open immediately when you release it.

Does the box include the contact block or just the plastic mushroom head operator?

The supplied unit includes the 1NO contact block rated at 10A 600V AC, so no separate contact block purchase is required.

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