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Red 30 mm mushroom-head push button with epoxy-coated zinc bezel

SIEMENS

SIEMENS 52BR8W2A 30 mm Non-Illuminated Push Button 1NO/1NC Red

SKU CH-QYS8-58F4J

Red 30 mm mushroom-head push button with maintained action, 1NO/1NC contacts rated 10 A at 600 V AC, IP66 and NEMA 4X rated

  • Engine BrandSIEMENS
  • Engine Size30 mm
  • Maintained action stays engaged until pressed again
  • 45 mm mushroom head gives large target for gloved hands
  • 1NO/1NC contacts switch two circuits with one operator
  • IP66 and NEMA 4X ratings resist water jets and corrosion
  • 10 A at 600 V AC rating handles heavy control loads

30 mm Mushroom-Head Push Button

This SIEMENS 52BR8W2A is a red, non-illuminated mushroom-head push button designed for industrial control panels. It suits maintenance engineers and panel builders who need a maintained-action operator with a 45 mm head diameter. The epoxy-coated zinc die-cast bezel and plastic head material provide durability in NEMA 1, 3, 3R, 4, 4X, 12 and 13 rated enclosures. It is not for applications requiring momentary action or illuminated indication.

10 A / 600 V AC Contact Rating

The single specification that decides fit is the contact rating of 10 A at 600 V AC with NEMA A600/P600 designation. The block carries one normally open and one normally closed contact (1NO/1NC) terminated by screw terminals. This rating determines whether the device can switch your specific control circuit load safely. Circuits exceeding this voltage or current rating require a different contact block.

IP66 / IP20 Environmental Protection

The combined IP66 and IP20 ratings mean the operator front withstands powerful water jets and dust ingress while the terminal side offers finger-safe protection. CSA, UL Listed and REACH compliance confirm suitability for regulated North American and European installations. No legend plate is included, so separate marking must be sourced if identification is required.

Highlights

  • Maintained action stays engaged until pressed again
  • 45 mm mushroom head gives large target for gloved hands
  • 1NO/1NC contacts switch two circuits with one operator
  • IP66 and NEMA 4X ratings resist water jets and corrosion
  • 10 A at 600 V AC rating handles heavy control loads

Specifications

Engine BrandSIEMENS
Engine Size30 mm

Questions about this item

What does the 10 A / 600 V AC rating mean when the button is wired into a control circuit?

The contacts are rated to switch up to 10 amps at 600 volts AC, matching the A600/P600 NEMA designation for heavy-duty pilot duty.

How do the screw terminals limit the wire size or installation method?

Screw terminals accept solid or stranded conductors; torque to the manufacturer's specified value to meet the 10 A rating.

What cut-out and depth are needed to mount the 30 mm mushroom head in a panel?

A 30 mm panel cut-out is required; the 45 mm mushroom head and maintained-action body need adequate depth behind the panel for the screw terminals and contact block.

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