Eaton E30 Square Multifunction...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$11.79
Eaton E30 Square Multifunction Pushbutton Operator Button, Type A Short

Eaton E30 Square Multifunction Pushbutton Operator Button, Type A Short

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Model: E30KA550

In Stock (leaves warehouse same day if ordered before 3pm ET)

$11.79
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Eaton E30 Square Multifunction Pushbutton Operator Button

The Eaton E30 Square Multifunction Pushbutton Operator Button is a replacement actuator button designed for use with Eaton E30 series square multifunction pushbutton stations. Built to a 30.5 mm Square Multifunction Watertight/Oiltight design, this actuator is available in a range of models and colors to suit panel and machine control applications. It is engineered to work with the corresponding E30 series operator and is backed by a 1 year manufacturer warranty, giving panel builders a dependable component for both new builds and field replacements.

Key Features

  • Square Multifunction Design: 30.5 mm Square Multifunction Watertight/Oiltight construction for use in demanding industrial pushbutton stations where sealing against dust and liquid ingress matters.
  • Panel-Ready Actuator: Standard panel-mount profile for consistent operator feel and clearance across an E30 station.
  • Custom Labeling: Available in legend options that allow panel builders and integrators to add labeling as required by the application.
  • Compatible Operator: Designed for use with the matching Eaton E30 series operator for correct fit, function, and long-term reliability.
  • Eaton E30 Series: Part of the Eaton E30 series of pushbutton and pilot device components, engineered for consistent styling and interchangeability across a control panel.
  • Used With: Pushbutton, square multifunction assemblies, making it a straightforward match for existing E30 square multifunction stations.
  • Field-Serviceable: Sized and styled as a direct replacement button, simplifying maintenance, relabeling, and panel refurbishment work.

Technical Specifications

  • Product Type: Legend Plate
  • Warranty: 1 year
  • Series: E30
  • Department: Electrical

Typical Applications

  • Industrial Control Panels and Enclosures
  • Square Multifunction Pushbutton Stations
  • Machine and Equipment Control Interfaces
  • OEM Panel Assemblies
  • Panel Retrofits and Legend Replacements
  • Watertight/Oiltight Control Applications

Why Eaton?

Eaton engineers its E30 series pushbutton components, including this square multifunction watertight/oiltight actuator button, for reliable, repeatable performance in demanding control panel environments. With a compatible operator reference and a 1 year warranty, this button gives panel builders and maintenance teams a dependable, code-appropriate replacement part for professional electrical and industrial control work.

Variant Specifications

ModelColorSKU
Type A (E30KA_50)BlackE30KA150
Type A (E30KA_50)YellowE30KA450
Type A (E30KA_50)WhiteE30KA550
Type A (E30KA_50)OrangeE30KA850
Type B (E30KB_50)RedE30KB250
Type B (E30KB_50)GreenE30KB350
Type B (E30KB_50)WhiteE30KB550
Type B (E30KB_50)BlueE30KB950

Manufacturer Resources

Product Specs

Catalog Notes:
Use with E30AA operator
Used with:
Pushbutton, square multifunction
Letter size:
3/16 in high
Department:
Electrical
Series:
E30
Product category:
Button
Actuator:
Type A, short
Warranty:
1 year
Product Group:
Motor Control & Automation
Product Type:
Pushbutton Operator
Product Subgroup:
Push Buttons & Pilot Devices

Eaton E30KA550 – Frequently Asked Questions

1) Which Eaton E30 operator does this replacement pushbutton button work with?
Use these E30 buttons with the Eaton E30AA operator. They are actuator buttons only, not a complete operator, so the E30AA body and its contact blocks stay in the panel and the button snaps on to it. The buttons are built for Eaton's 30.5 mm square multifunction watertight/oiltight pushbutton stations.
2) What is the difference between the Type A and Type B E30 pushbutton buttons?
Type A is the short actuator; Type B is the other profile offered on the same E30 square multifunction button family. Colors split between them: Type A (E30KA_50) comes in black, yellow, white and orange, and Type B (E30KB_50) comes in red, green, white and blue. If you want a red stop button or a green start button, you are ordering Type B; black, yellow or orange means Type A.
3) Do I need to replace the whole pushbutton station if a button is cracked or faded?
No. These are field-replaceable actuator buttons for E30 square multifunction stations, so you swap only the button and leave the E30AA operator and wiring in place. That is the usual fix for a worn legend, a broken cap, or recoloring a function during a panel retrofit.
4) Will an E30 square button fit a round 30.5 mm pushbutton operator?
No. These are square multifunction buttons made for the E30 square multifunction pushbutton assemblies and the E30AA operator. A standard round flush or extended E30 operator takes a round actuator instead, so match the button shape to the operator already in the panel before ordering.
5) What colors do the Eaton E30 square multifunction buttons come in?
Six colors across the two actuator types: black (E30KA150), yellow (E30KA450), white (E30KA550) and orange (E30KA850) in Type A, and red (E30KB250), green (E30KB350), white (E30KB550) and blue (E30KB950) in Type B. White is the only color offered in both types, which matters if you are standardizing a panel on one actuator profile.
6) Can I put custom legend text on these E30 buttons?
Yes. The E30 square multifunction buttons take legend options so a panel builder can mark them START, STOP, JOG or whatever the drawing calls for. Legend lettering is 3/16 inch high, so plan your wording length around that character size.
7) Are these E30 buttons suitable for a washdown or oily machine environment?
They are part of Eaton's 30.5 mm square multifunction watertight/oiltight design, which is the E30 line intended for panels exposed to dust, coolant and liquid. The sealing is a function of the complete assembly, so the button has to be fitted to its matching E30AA operator for that rating to hold.
How fast can I get the Eaton E30KA550 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton E30KA550 come with a warranty?
Absolutely. The Eaton E30KA550 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eaton E30KA550?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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