<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e1806-3d45-7cc1-8843-81c7fcfc0023,g:a78cf9bd-b2dc-4f45-b093-e63d75aebf57-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:etn="http://www.eaton.com/20260624" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.eaton.com/20260624">
  <xs:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap-ebp/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="etn-20260624_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="etn-20260624_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="etn-20260624_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="etn-20260624_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="Cover" roleURI="http://www.eaton.com/role/Cover">
        <link:definition>0000001 - Document - Cover</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STATEMENTOFNETASSETSAVAILABLEFORBENEFITS" roleURI="http://www.eaton.com/role/STATEMENTOFNETASSETSAVAILABLEFORBENEFITS">
        <link:definition>0000002 - Statement - STATEMENT OF NET ASSETS AVAILABLE FOR BENEFITS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="STATEMENTOFCHANGESINNETASSETSAVAILABLEFORBENEFITS" roleURI="http://www.eaton.com/role/STATEMENTOFCHANGESINNETASSETSAVAILABLEFORBENEFITS">
        <link:definition>0000003 - Statement - STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofPlan" roleURI="http://www.eaton.com/role/DescriptionofPlan">
        <link:definition>0000004 - Disclosure - Description of Plan</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPolicies" roleURI="http://www.eaton.com/role/SummaryofSignificantAccountingPolicies">
        <link:definition>0000005 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TaxStatus" roleURI="http://www.eaton.com/role/TaxStatus">
        <link:definition>0000006 - Disclosure - Tax Status</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PartyinInterestTransactions" roleURI="http://www.eaton.com/role/PartyinInterestTransactions">
        <link:definition>0000007 - Disclosure - Party-in-Interest Transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.eaton.com/role/FairValueMeasurements">
        <link:definition>0000008 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SCHEDULEOFASSETSHELDFORINVESTMENTPURPOSESScheduleHPartIVLine4i" roleURI="http://www.eaton.com/role/SCHEDULEOFASSETSHELDFORINVESTMENTPURPOSESScheduleHPartIVLine4i">
        <link:definition>0000009 - Disclosure - SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES &#8211; Schedule H, Part IV, Line 4i</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.eaton.com/role/SummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>0000010 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.eaton.com/role/FairValueMeasurementsTables">
        <link:definition>0000011 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DescriptionofPlanDetails" roleURI="http://www.eaton.com/role/DescriptionofPlanDetails">
        <link:definition>0000012 - Disclosure - Description of Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PartyinInterestTransactionsDetails" roleURI="http://www.eaton.com/role/PartyinInterestTransactionsDetails">
        <link:definition>0000013 - Disclosure - Party-in-Interest Transactions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsDetails" roleURI="http://www.eaton.com/role/FairValueMeasurementsDetails">
        <link:definition>0000014 - Disclosure - Fair Value Measurements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SCHEDULEOFASSETSHELDFORINVESTMENTPURPOSESScheduleHPartIVLine4iDetails" roleURI="http://www.eaton.com/role/SCHEDULEOFASSETSHELDFORINVESTMENTPURPOSESScheduleHPartIVLine4iDetails">
        <link:definition>0000015 - Disclosure - SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES &#8211; Schedule H, Part IV, Line 4i (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SCHEDULEOFASSETSHELDFORINVESTMENTPURPOSESScheduleHPartIVLine4iDetails_1" roleURI="http://www.eaton.com/role/SCHEDULEOFASSETSHELDFORINVESTMENTPURPOSESScheduleHPartIVLine4iDetails_1">
        <link:definition>0000015 - Disclosure - SCHEDULE OF ASSETS HELD FOR INVESTMENT PURPOSES &#8211; Schedule H, Part IV, Line 4i (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="etn_EBP002Member" abstract="true" name="EBP002Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="etn_VanguardRetirementSavingsTrustIIMember" abstract="true" name="VanguardRetirementSavingsTrustIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="etn_EatonSharesFundMember" abstract="true" name="EatonSharesFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="etn_VanguardInstitutional500IndexTrustMember" abstract="true" name="VanguardInstitutional500IndexTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="etn_VanguardBalancedIndexFundMember" abstract="true" name="VanguardBalancedIndexFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="etn_VanguardDevelopedMarketsIndexFundMember" abstract="true" name="VanguardDevelopedMarketsIndexFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="etn_EBPPlanTerminationPolicyTextBlock" abstract="false" name="EBPPlanTerminationPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="etn_EBPEmployerContributionRetirementPercentage" abstract="false" name="EBPEmployerContributionRetirementPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="etn_EBPEmployerContributionVestingPercentage" abstract="false" name="EBPEmployerContributionVestingPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="etn_EBPEmployerContributionVestingServicePeriod" abstract="false" name="EBPEmployerContributionVestingServicePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="etn_EBPNoteReceivableFromParticipantGeneralLoanBorrowingTerm" abstract="false" name="EBPNoteReceivableFromParticipantGeneralLoanBorrowingTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="etn_EBPEmployerOrdinaryShareDividendMember" abstract="true" name="EBPEmployerOrdinaryShareDividendMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
