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Red mushroom-head emergency stop button with chrome bezel, 22 mm mount

Schneider Electric

Schneider Electric XB4BS9445 Emergency Stop Button 22mm 1NO/1NC Red

SKU CH-CMZ4-RHYMB

A 22 mm maintained-action emergency stop button with a 40 mm red mushroom head, metal operator, chrome-plated zinc die-cast bezel, 1NO/1NC contacts rated 10 A at 600 V AC, and NEMA 1, 2, 3, 4, 4X.

  • Size22 mm
  • Product typeIndustrial Electrical Controls & Automation
  • 22 mm panel cut-out fits standard enclosures
  • Maintained mushroom action stays engaged until reset
  • 1NO/1NC contacts rated 10 A at 600 V AC
  • Chrome-plated zinc bezel with IP66, IP67, IP69 and IP69K sealing
  • NEMA 1, 2, 3, 4, 4X, 12 and 13 enclosure ratings

Schneider Electric Emergency Stop Button

The Schneider Electric XB4BS9445 is a 22 mm emergency stop push button designed for industrial electrical controls and automation. It features a maintained action mechanism with a 40 mm metal mushroom head operator in red. The unit provides one normally open and one normally closed contact rated at 10A at 600V AC.

Build Quality And Mounting Details

The operator head uses metal construction with a chrome-plated zinc die-cast bezel for durability. It carries NEMA ratings 1, 2, 3, 4, 4X, 12, and 13 alongside IP66, IP67, IP69, and IP69K ingress protection. The 22 mm mounting size fits standard industrial panel cutouts for secure installation.

Replaces Older E-Stop Units

This button upgrades legacy emergency stop devices that lack the combined high IP and NEMA ratings or the 10A contact capacity. The jump is worth it when machinery requires IP69K wash-down resistance or NEMA 4X corrosion protection in a single maintained-action unit. It is not suited for applications needing momentary action or a different contact configuration.

How it compares

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

Price $91.99
Pricier than about 84% 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 10 A, 600 V AC contact rating mean for the circuits I can switch?

The button can carry up to 10 amps at 600 volts AC, so it is suitable for standard industrial control circuits within those limits.

Will the 22 mm mounting hole and 40 mm mushroom head fit my panel cut-out?

Yes, it installs in a standard 22 mm hole; the 40 mm metal mushroom head and chrome-plated zinc die-cast bezel sit flush on panels up to typical industrial thickness.

How do I wire the 1NO/1NC contacts and avoid the common mistake?

Connect one wire to the normally open terminal and one to the normally closed terminal; the error is reversing them, which makes the stop circuit fail-safe in the wrong state.

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