FIELD GUIDESource-led reference

Side by side

IEC 60320 C19 versus C21 connectors

Is the cord connector C19 or C21? Both occur in the higher-current IEC 60320 family, but exact configuration and equipment requirements remain separate.

Computer-generated illustration, not a photograph.
P183 · ConnectorIEC 60320 C19 cord connector
Computer-generated illustration, not a photograph.
P305 · ConnectorIEC 60320 C21 very-hot-condition cord connector

How they differ

  • IEC 60320 C19 cord connector Confirm the C19 designation on the cord-side component and the exact C20 inlet/application documentation.
  • IEC 60320 C21 very-hot-condition cord connector Identify the exact C21 connector versus its mating C22 inlet 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 C19 cord connectorIEC 60320 C21 very-hot-condition cord connector
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 rolesocket (4795.0000)S588Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 4795.0000. Documented role: socket. Full PDF text read; direct download403. Diagram numbers have no verified axes here; no geometry or visible specimen marking proposed.cord connector (Named series/reference only, not every family part. Interpower Rev10-17 labelled C21 cord connector family; no exact manufacturer part); cord connector (ExactSCHURTER 1658.0000 /series1658)S940 · S944Current 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 C21 cord connector family; no exact manufacturer part ExactSCHURTER 1658.0000 /series1658
Key distinctionLarger appliance-coupler geometry does not by itself establish a safe load or installation rating.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 C19 cord connector — original, not-to-scale identification schematic; drawing review pending
P183 / ConnectorIEC 60320 C19 cord connector

Identification schematic · not to scale · drawing review pending

IEC 60320 C21 very-hot-condition cord connector — original, not-to-scale identification schematic; drawing review pending
P305 / ConnectorIEC 60320 C21 very-hot-condition cord connector

Identification schematic · not to scale · drawing review pending

LayerConnectorConnector
Key distinctionLarger appliance-coupler geometry does not by itself establish a safe load or installation rating.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 rolesocket (4795.0000)S588Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 4795.0000. Documented role: socket. Full PDF text read; direct download403. Diagram numbers have no verified axes here; no geometry or visible specimen marking proposed.cord connector (Named series/reference only, not every family part. Interpower Rev10-17 labelled C21 cord connector family; no exact manufacturer part); cord connector (ExactSCHURTER 1658.0000 /series1658)S940 · S944Current 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 C21 cord connector family; no exact manufacturer part ExactSCHURTER 1658.0000 /series1658
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 identificationCord connector in the C19/C20 IEC 60320 pair.C183AInterpower’s IEC 60320 overview identifies the C21 connector with the C22 inlet in the Class I 16 A/20 A coupler family.C305A
Observed manufacturer exampleSCHURTER 4795 / 4795.0000 · Larger cord connector · 70°C source example. Specific product family only; not a full cordset or installed device rating.C183B · C183CNot an equivalent field
Example mating designationC19 / C20 pair listed in manufacturer references; select only with complete product and appliance documentation.C183DNot an equivalent field
EvidenceC183A,C183B,C183C,C183D,C183E →
Independent review pending
C305A,C305B,C305C,C305D →
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 C19 cord connectorP183 / Connector
Connector

Key distinction

IEC 60320 C19 cord connectorP183 / Connector
Larger appliance-coupler geometry does not by itself establish a safe load or installation rating.
IEC 60320 C21 very-hot-condition cord connectorP305 / 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 C19 cord connectorP183 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C21 very-hot-condition cord connectorP305 / 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 C19 cord connectorP183 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Populated contacts

IEC 60320 C19 cord connectorP183 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact rows

IEC 60320 C19 cord connectorP183 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact pitch

IEC 60320 C19 cord connectorP183 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Dimensions / axis

IEC 60320 C19 cord connectorP183 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Connector role

IEC 60320 C19 cord connectorP183 / Connector
socket (4795.0000)S588Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 4795.0000. Documented role: socket. Full PDF text read; direct download403. Diagram numbers have no verified axes here; no geometry or visible specimen marking proposed.
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
cord connector (Named series/reference only, not every family part. Interpower Rev10-17 labelled C21 cord connector family; no exact manufacturer part); cord connector (ExactSCHURTER 1658.0000 /series1658)S940 · S944Current 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 C21 cord connector family; no exact manufacturer part ExactSCHURTER 1658.0000 /series1658

Coupling / latch

IEC 60320 C19 cord connectorP183 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Keying / polarization

IEC 60320 C19 cord connectorP183 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Documented identification

IEC 60320 C19 cord connectorP183 / Connector
Cord connector in the C19/C20 IEC 60320 pair.C183A
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
Interpower’s IEC 60320 overview identifies the C21 connector with the C22 inlet in the Class I 16 A/20 A coupler family.C305A

Observed manufacturer example

IEC 60320 C19 cord connectorP183 / Connector
SCHURTER 4795 / 4795.0000 · Larger cord connector · 70°C source example. Specific product family only; not a full cordset or installed device rating.C183B · C183C
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
Not an equivalent field

Example mating designation

IEC 60320 C19 cord connectorP183 / Connector
C19 / C20 pair listed in manufacturer references; select only with complete product and appliance documentation.C183D
IEC 60320 C21 very-hot-condition cord connectorP305 / Connector
Not an equivalent field

Evidence

IEC 60320 C19 cord connectorP183 / Connector
C183A,C183B,C183C,C183D,C183E →
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

S346 · IEC 60320 overview — C21 connector / C22 inlet

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

Within inspection window

Scoped support: Identification of the C21 connector/C22 inlet 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

S588 · SCHURTER 4795 / 4795.0000 — IEC C19 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 cord connector product photos, 16 A IEC component rating and 70°C classification; p.3 named C20 mating inlets.

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.

S944 · SCHURTER 1658 IEC coupler data sheet

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

Within inspection window

Scoped support: Exact1658.0000 straightC21 cord connector

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;p.2exact1658.0000 row;p.3matingtypes/date; complete3-page public PDF text read through official web retrieval; drawing pixels NOT acquired.

Trace 9 claims to their source records

C183A · P183

Interpower identifies C19 as the cord-connector 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)

C183B · P183

SCHURTER 4795 is catalogued as an IEC C19 larger cord connector; the observed product photos and datasheet identify a cable-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: S588 · Evidence trail → (private workspace)

C183C · P183

The SCHURTER 4795 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: S588 · Evidence trail → (private workspace)

C183D · P183

SCHURTER's documented IEC C19 product family identifies the complementary C20 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: S588 · Evidence trail → (private workspace)

C183E · P183

Exact source example 4795.0000: construction: Straight rewireable cable-mounted C19 connector; black housing; 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: S588 · Evidence trail → (private workspace)

C305A · P305

Interpower’s IEC 60320 overview identifies the C21 connector with the C22 inlet 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: S346 · Evidence trail → (private workspace)

C305B · P305

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

Claim scope: Interpower Rev10-17 labelled C21 cord connector family; no exact manufacturer part

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

C305C · P305

Bulgin's manufacturer overview describes the C21/C22 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)

C305D · P305

SCHURTER identifies 1658.0000 as follows: Straight rewireable C21 cord connector; screw clamps; black thermoplastic housing.

Claim scope: ExactSCHURTER 1658.0000 /series1658 only;termination dimensions are not mating pitch and no arbitraryequipment compatibility is asserted.

Source links: S944 · 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.