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Red 22 mm flush push button with nickel-plated brass bezel

SIEMENS

SIEMENS 3SU1051-0AA20-0AA0 Push Button Operator 22mm Red

SKU CH-W4YV-8NNND

Red 22 mm illuminated push button operator with maintained flush action and IP69K rating

  • Red flush button for clear emergency identification
  • 22 mm mounting fits standard panel cut-outs
  • Polyamide head resists impact and chemicals
  • Nickel-plated brass bezel withstands harsh environments
  • IP69K and NEMA 4X ratings protect against high-pressure wash-down

22 mm Red Illuminated Push Button

This Siemens 3SU1051-0AA20-0AA0 is a 22 mm red illuminated push-button operator designed for industrial control panels. It features a maintained flush button with a polyamide head and a bezel made from nickel-plated brass and zinc die-cast. The unit carries NEMA 1, 2, 3, 3R, 4, 4X, 12 and IP69K ratings for demanding environments. It is certified to CE, CSA and UL standards.

Suited for maintained momentary control

This operator suits panels requiring a maintained red flush actuator with high ingress protection. It is not for applications needing a momentary action or a mushroom-head style. Buyers who require an integrated lamp module or a specific legend inscription must source those separately. The basic metal construction fits standard 22 mm mounting cut-outs.

Lamp module not included

The critical specification is that no lamp module, lamp type or replacement lamp is supplied with this operator. Illumination voltage and colour depend entirely on the separate module selected and installed by the user. Verify the required module compatibility before purchase to ensure the indicator functions as intended.

Highlights

  • Red flush button for clear emergency identification
  • 22 mm mounting fits standard panel cut-outs
  • Polyamide head resists impact and chemicals
  • Nickel-plated brass bezel withstands harsh environments
  • IP69K and NEMA 4X ratings protect against high-pressure wash-down

Specifications

BrandSIEMENS

Questions about this item

Which 22 mm red push-button operator version should I choose for a maintained flush-button application?

The 3SU1051-0AA20-0AA0 is a maintained flush button with a red polyamide head and nickel-plated brass/zinc die-cast bezel, designed for 22 mm panel cut-outs.

What does the IP69K rating mean once the operator is installed in a machine?

IP69K confirms protection against high-pressure, high-temperature wash-down, making the operator suitable for harsh industrial cleaning cycles.

Which standards and NEMA ratings does this 22 mm operator meet, and what do they cap in practice?

It carries CE, CSA and UL approvals plus NEMA 1, 2, 3, 3R, 4, 4X and 12, covering indoor, outdoor, wash-down and corrosion-resistant environments.

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