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Red 30 mm mushroom head push button with metal dome and anodised aluminium bezel

Eaton

Eaton HT8CBRAB 30 mm Push Button Operator, Red, 1NO/1NC

SKU CH-MP4J-PS4T9

A 30 mm maintained mushroom-head push button with 1NO/1NC contacts rated 10 A at 600 V AC, IP66 and NEMA 1, 12, 13, 2, 3, 3R, 4, 4X protection

  • Size30 mm
  • Product typeIndustrial Electrical Controls & Automation
  • 30 mm mushroom head fits standard panels
  • 10 A at 600 V AC handles heavy loads
  • IP66 and NEMA 4X seal out dust and water
  • Metal construction with anodized aluminium bezel resists impact
  • 1NO/1NC contacts give both make and break functions

Industrial 30 mm Mushroom Push Button

The Eaton HT8CBRAB is a 30 mm maintained-action mushroom push button designed for industrial control panels. Its red metal head and 1NO/1NC contact block suit emergency-stop or start-stop functions in machinery and process equipment. Panels requiring a single, panel-mounted operator with a 40 mm domed head will fit this unit directly. Builders needing illuminated or multi-operator stations must source a different configuration.

Contact Ratings and Environmental Limits

The screw-clamp contacts are rated 10A at 600V AC with NEMA A600/P600 designation for heavy-duty pilot duty. The operator carries NEMA 1, 2, 3, 3R, 4, 4X, 12, 13 and IP66 ratings, so it withstands dust, water jets and corrosion in indoor or outdoor enclosures. Circuits demanding higher current, different voltage classes or wireless signalling fall outside these certified limits. No other interface or protocol is supported by this device.

Metal Construction and Panel Integration

The anodised aluminium bezel and metal head resist impact and chemical exposure in harsh plant environments. A 30 mm mounting hole accepts the operator without adapters, and the screw-clamp terminals simplify field wiring with standard tools. Compatibility with Allen-Bradley push-button panels allows direct retrofit on that platform. Installers requiring plastic bezels, legend plates or tool-less mounting must select alternative hardware.

How it compares

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

Price $129.99
Pricier than about 90% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameEaton
Product typeIndustrial Electrical Controls & Automation
Size & build
Size30 mm

Questions about this item

Should I choose the maintained or momentary action for an emergency stop?

This operator uses a maintained action, so the mushroom head stays latched until you twist or pull it to reset — ideal for emergency-stop circuits that must remain active until manually cleared.

What does the 10 A at 600 V AC rating mean for my control circuit?

The contacts are rated to switch up to 10 amperes at 600 volts AC, matching the A600/P600 NEMA designation, so they can directly pilot contactors, solenoids or small motors in industrial panels.

Will the IP66 and NEMA 4X ratings protect the button in a wash-down area?

Yes — IP66 and NEMA 4X together certify the operator against powerful water jets, dust ingress and corrosion, making it suitable for food-processing or outdoor wash-down environments.

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