FIELD GUIDESource-led reference

Side by side

IEC 60320 C20 versus C22 inlets

Is the appliance inlet C20 or C22? Exact configuration, equipment rating and approved cord set must be resolved from equipment documentation.

Computer-generated illustration, not a photograph.
P184 · ConnectorIEC 60320 C20 appliance inlet
Computer-generated illustration, not a photograph.
P306 · ConnectorIEC 60320 C22 very-hot-condition appliance inlet

How they differ

  • IEC 60320 C20 appliance inlet Confirm C20 at the equipment inlet and use the equipment and cord-set ratings for the actual installation.
  • IEC 60320 C22 very-hot-condition appliance inlet Identify the exact C22 appliance inlet versus its mating C21 connector from the equipment or cord documentation; do not select, adapt or install a mains-power connection from shape alone.

At a glance

Source-scoped form facts; counts, variants and unknowns are distinct
FieldIEC 60320 C20 appliance inletIEC 60320 C22 very-hot-condition appliance inlet
TypeConnectorConnector
FamilyPowerPower
Shaperectangularrectangular
Nominal contactsNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Positions / cavity spanNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact rowsNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Connector roleplug (4793.3000)S589Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 4793.3000. Documented role: plug. Full PDF text read; direct download403. Diagram numbers have no verified axes here; no geometry or visible specimen marking proposed.appliance inlet (Named series/reference only, not every family part. Interpower Rev10-17 labelled C22 appliance inlet family; no exact manufacturer part); appliance inlet (ExactSCHURTER 6173.0010 /series1681)S940 · S945Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. Named series/reference only, not every family part. Interpower Rev10-17 labelled C22 appliance inlet family; no exact manufacturer part ExactSCHURTER 6173.0010 /series1681
Key distinctionConnector-family identification does not approve a cord, branch circuit or equipment load.IEC coupler identity and family rating context do not by themselves establish appliance voltage, cord-set approval, wiring, safe substitution or installation suitability.

Full evidence ledger and sources ↓

Illustrations are computer-generated with prior AI visual review; independent technical and rights review pending. A comparison is not a compatibility verdict.

This comparison stays within one evidence layer.

All selected records are Connector records. Similar layer does not mean compatible, interchangeable or safe to mate.

Families represented: Power

The reference ledger

Read the same question across.

2 selected records · 15 fields
No score. No compatibility verdict.

On a narrow screen, scroll the table sideways or open the field-by-field reading view below. Illustrations are not a size comparison.

Comparison of selected field notes; source links accompany each documented specification
What you are comparing
IEC 60320 C20 appliance inlet — original, not-to-scale identification schematic; drawing review pending
P184 / ConnectorIEC 60320 C20 appliance inlet

Identification schematic · not to scale · drawing review pending

IEC 60320 C22 very-hot-condition appliance inlet — original, not-to-scale identification schematic; drawing review pending
P306 / ConnectorIEC 60320 C22 very-hot-condition appliance inlet

Identification schematic · not to scale · drawing review pending

LayerConnectorConnector
Key distinctionConnector-family identification does not approve a cord, branch circuit or equipment load.IEC coupler identity and family rating context do not by themselves establish appliance voltage, cord-set approval, wiring, safe substitution or installation suitability.
Nominal contactsNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Positions / cavity spanNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Populated contactsNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact rowsNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact pitchNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Dimensions / axisNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Connector roleplug (4793.3000)S589Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 4793.3000. Documented role: plug. Full PDF text read; direct download403. Diagram numbers have no verified axes here; no geometry or visible specimen marking proposed.appliance inlet (Named series/reference only, not every family part. Interpower Rev10-17 labelled C22 appliance inlet family; no exact manufacturer part); appliance inlet (ExactSCHURTER 6173.0010 /series1681)S940 · S945Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. Named series/reference only, not every family part. Interpower Rev10-17 labelled C22 appliance inlet family; no exact manufacturer part ExactSCHURTER 6173.0010 /series1681
Coupling / latchNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Keying / polarizationNot recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Documented identificationAppliance inlet in the C19/C20 IEC 60320 pair.C184AInterpower’s IEC 60320 overview identifies the C22 appliance inlet with the C21 connector in the Class I 16 A/20 A coupler family.C306A
Observed manufacturer exampleSCHURTER 4793 / 4793.3000 · Larger appliance inlet · 70°C source example. Specific product family only; not a full cordset or installed device rating.C184B · C184CNot an equivalent field
Example mating designationC20 / C19 pair listed in manufacturer references; select only with complete product and appliance documentation.C184DNot an equivalent field
EvidenceC184A,C184B,C184C,C184D,C184E →
Independent review pending
C306A,C306B,C306C,C306D →
Independent review pending
Read field by field — no sideways scrolling

The same selected records, fields, values and source links as the table. Missing fields remain non-equivalent; no values are merged.

Layer

IEC 60320 C20 appliance inletP184 / Connector
Connector

Key distinction

IEC 60320 C20 appliance inletP184 / Connector
Connector-family identification does not approve a cord, branch circuit or equipment load.
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
IEC coupler identity and family rating context do not by themselves establish appliance voltage, cord-set approval, wiring, safe substitution or installation suitability.

Nominal contacts

IEC 60320 C20 appliance inletP184 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Positions / cavity span

IEC 60320 C20 appliance inletP184 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Populated contacts

IEC 60320 C20 appliance inletP184 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact rows

IEC 60320 C20 appliance inletP184 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact pitch

IEC 60320 C20 appliance inletP184 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Dimensions / axis

IEC 60320 C20 appliance inletP184 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Connector role

IEC 60320 C20 appliance inletP184 / Connector
plug (4793.3000)S589Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 4793.3000. Documented role: plug. Full PDF text read; direct download403. Diagram numbers have no verified axes here; no geometry or visible specimen marking proposed.
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
appliance inlet (Named series/reference only, not every family part. Interpower Rev10-17 labelled C22 appliance inlet family; no exact manufacturer part); appliance inlet (ExactSCHURTER 6173.0010 /series1681)S940 · S945Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. Named series/reference only, not every family part. Interpower Rev10-17 labelled C22 appliance inlet family; no exact manufacturer part ExactSCHURTER 6173.0010 /series1681

Coupling / latch

IEC 60320 C20 appliance inletP184 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Keying / polarization

IEC 60320 C20 appliance inletP184 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Documented identification

IEC 60320 C20 appliance inletP184 / Connector
Appliance inlet in the C19/C20 IEC 60320 pair.C184A
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Interpower’s IEC 60320 overview identifies the C22 appliance inlet with the C21 connector in the Class I 16 A/20 A coupler family.C306A

Observed manufacturer example

IEC 60320 C20 appliance inletP184 / Connector
SCHURTER 4793 / 4793.3000 · Larger appliance inlet · 70°C source example. Specific product family only; not a full cordset or installed device rating.C184B · C184C
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Not an equivalent field

Example mating designation

IEC 60320 C20 appliance inletP184 / Connector
C20 / C19 pair listed in manufacturer references; select only with complete product and appliance documentation.C184D
IEC 60320 C22 very-hot-condition appliance inletP306 / Connector
Not an equivalent field

Evidence

IEC 60320 C20 appliance inletP184 / Connector
C184A,C184B,C184C,C184D,C184E →
Independent review pending

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Evidence behind this page

Scope first. Source second. Approval separate.

6 linked sources · 9 scoped claims · 0 sources with inspection/access flags.

Page scope: Evidence behind the compared records; the editorial comparison still needs separate review.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-03. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 6 source scopes, access limits and dates

S195 · IEC 60320 appliance couplers — featured product overview

Interpower · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Identifies common IEC 60320 C13/C14, C15/C16 and C19/C20 connector/inlet pairings and distinguishes the cord connector from the appliance inlet.

Not established / limitations: Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.

Locator: IEC 60320 appliance coupler product families and mating-pair overview

S347 · IEC 60320 overview — C22 appliance inlet / C21 connector

Interpower · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Identification of the C22 appliance inlet/C21 connector pair and its named IEC 60320 coupler family only; no wiring or installation guidance.

Not established / limitations: Source-backed identification does not establish universal wiring, protocol generation, device compatibility, safe installation or fabrication approval.

Locator: IEC 60320 appliance-coupler family overview

S589 · SCHURTER 4793 / 4793.3000 — IEC C20 manufacturer datasheet

SCHURTER · Manufacturer / product-owner domain · inspected 2026-10-13 · due 2027-01-11

Within inspection window

Scoped support: Specific named rewireable connector or panel inlet; identification and manufacturer variant details, not a full cable/device approval or standardized geometry.

Not established / limitations: Variant-specific geometry and ratings. Not a generic IEC designation approval, safe mating rule, wiring map, cordset certification or fabrication dimension.

Locator: PDF p.1 panel-mount C20, cold-condition 70°C and optional C24 class-II version; p.4 named C19 mating connectors; visually inspected p.1 photos.

S940 · IEC60320 Appliance and Interconnection Couplers

Interpower · Manufacturer / product-owner domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: Historical manufacturer chart: named form roles, class/temperature family and explicit non-rewireable labels only.

Not established / limitations: Not the current normative IEC standard, measured specimen, dimensional drawing, universal wiring/contact-population statement or safety/mating approval. The rightmost interconnection columns are distinct roles.

Locator: One-page chart, Rev10-17; Connectors/Inlets columns, C1/C2,C9/C10,C15A/C16A,C21/C22,C23/C24 rows. Actual savedPDF text and150dpi pixels inspected.

S941 · What are IEC Connectors

Bulgin · Unclassified publisher domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: Manufacturer educational overview: stated conductor counts/temperature context and odd/even role nomenclature; no terminal positions.

Not established / limitations: Full public page read. Conductor counts are not silently converted into normalized contact positions, actual population or wiring maps. Not a normative mechanical specification; unrelated cable-length/generalized approval prose excluded.

Locator: How are IEC connectors named; named C1/C2,C9/C10,C15A/C16A,C21/C22,C23/C24 paragraphs.

S945 · SCHURTER 1681 IEC coupler data sheet

SCHURTER · Manufacturer / product-owner domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: Exact6173.0010/1681-X-DDD0-A-415-00 C22 snap-in inlet

Not established / limitations: Direct download403. Textual dimensions used only when the axis is explicitly named, such as panel thickness or terminal length. Unviewed outline numbers/pitch are not imported. Exact part, role, terminal and historical/current document scopes remain separate.

Locator: p.1Description/TechnicalData;pp.3-4dimensions captions/configuration; exact6173.0010 row;p.5date; complete5-page public PDF text read through official web retrieval; drawing pixels NOT acquired.

Trace 9 claims to their source records

C184A · P184

Interpower identifies C20 as the appliance-inlet side of the C19/C20 IEC 60320 appliance-coupler pairing.

Claim scope: V36 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction or end-to-end compatibility proof.

Source links: S195 · Evidence trail → (private workspace)

C184B · P184

SCHURTER 4793 is catalogued as an IEC C20 larger appliance inlet; the observed product photos and datasheet identify an equipment-side component, not both ends of a mains cord.

Claim scope: V141 manufacturer-specific IEC mains connector identity, coupling-family example, and thermal classification. NOT installation, cordset approval, dimension, pinout, universal fit, regional plug rating or safe electrical use.

Source links: S589 · Evidence trail → (private workspace)

C184C · P184

The SCHURTER 4793 datasheet identifies a 70°C pin-temperature classification; this is a part/series rating under documented conditions, not an automatic rating for an appliance, installed cord or alternate product.

Claim scope: V141 manufacturer-specific IEC mains connector identity, coupling-family example, and thermal classification. NOT installation, cordset approval, dimension, pinout, universal fit, regional plug rating or safe electrical use.

Source links: S589 · Evidence trail → (private workspace)

C184D · P184

SCHURTER's documented IEC C20 product family identifies the complementary C19 form in the cited mating-product references. Confirm the actual variants and full installed equipment/cordset documentation; no safe-fit or cable-load approval follows solely from that relationship.

Claim scope: V141 manufacturer-specific IEC mains connector identity, coupling-family example, and thermal classification. NOT installation, cordset approval, dimension, pinout, universal fit, regional plug rating or safe electrical use.

Source links: S589 · Evidence trail → (private workspace)

C184E · P184

Exact source example 4793.3000: construction: Front snap-in C20 inlet for1 mm panel; 6.3 x0.8 mm quick-connect terminals; protection class I. pin temperature c: 70. rating: IEC16 A; UL/CSA20 A at250 VAC. Exact listed order number; regional ratings remain distinct. No physical compatibility, pin map or hardware validation is established.

Claim scope: Exact named component/family technical construction reference from the full current primary document; geometry, ratings and implementation limits do not transfer to other variants.

Source links: S589 · Evidence trail → (private workspace)

C306A · P306

Interpower’s IEC 60320 overview identifies the C22 appliance inlet with the C21 connector in the Class I 16 A/20 A coupler family.

Claim scope: V50 IEC appliance-coupler identification fact only; no wiring, energized-work, circuit selection, interchangeability, installation or safe-operation approval is inferred.

Source links: S347 · Evidence trail → (private workspace)

C306B · P306

Interpower's Rev10-17 chart labels C22 as the appliance inlet paired with C21, in its Class I very hot group.

Claim scope: Interpower Rev10-17 labelled C22 appliance inlet family; no exact manufacturer part

Source links: S940 · Evidence trail → (private workspace)

C306C · P306

Bulgin's manufacturer overview describes the C22/C21 family as a 3-conductor system with 155 degrees C temperature context. This is not a terminal-position map.

Claim scope: Manufacturer educational family context; not actual population,positions,wholecordsuitability or current normative dimensional coverage.

Source links: S941 · Evidence trail → (private workspace)

C306D · P306

SCHURTER identifies 6173.0010 as follows: Front-side snap-in C22 inlet; solder terminals; black PA housing; specified 1.5 mm mounting panel.

Claim scope: ExactSCHURTER 6173.0010 /series1681 only;termination dimensions are not mating pitch and no arbitraryequipment compatibility is asserted.

Source links: S945 · Evidence trail → (private workspace)

Prepare this page for review → (private workspace)Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.