IEC 60320 Connector Guide (IEC-320)
Identify common appliance connectors and their matching equipment inlets. Often called IEC-320 connectors, these connections are covered by the IEC 60320 series.
Connector or inlet?
The cable-end connector normally has recessed female contacts. The matching appliance inlet on the equipment has pins. For example, a C13 cable connector mates with a C14 equipment inlet. Check the moulded identification and product drawing rather than relying on a nickname.
Common connector pairs
| Cable connector / equipment inlet | Identification | IEC current | Maximum pin temperature | Equipment class |
|---|---|---|---|---|
| C5 / C6 | Three-lobed “cloverleaf”; includes earth | 2.5 A | 70°C | I |
| C7 / C8 | “Figure-of-eight”; no earth | 2.5 A | 70°C | II |
| C13 / C14 | Three-contact rectangular profile; includes earth | 10 A | 70°C | I |
| C15 / C16 | Hot-condition pair; keyed/notched profile | 10 A | 120°C | I |
| C15A / C16A | Very-hot-condition pair; additional keying | 10 A | 155°C | I |
| C17 / C18 | Two-contact relative of C13/C14; no earth | 10 A | 70°C | II |
| C19 / C20 | Larger three-contact pair; includes earth | 16 A | 70°C | I |
These are reference ratings for the connector types, not a rating for every finished lead. Pin temperature describes the permitted temperature at the inlet pins; it is not the allowable ambient temperature of the cable or the whole assembly.
IEC and North American ratings
| Connector | IEC reference | North American example, where specifically approved |
|---|---|---|
| C13 | 10 A / 250 V AC | 15 A / 125 or 250 V AC |
| C15 | 10 A / 250 V AC | 15 A / 250 V AC |
| C19 | 16 A / 250 V AC | 20 A / 125 or 250 V AC |
A North American approval does not automatically increase the permitted IEC rating. Read the actual product markings and certification. A complete lead may have a lower rating because of its plug, cable, fuse or other components.
Choosing the right lead
- Identify the equipment inlet and its exact connector code.
- Check voltage, required current and the destination-country plug.
- Match the temperature category and protective-earth requirements.
- Check the complete assembly rating and the equipment manufacturer’s instructions.
Class I equipment uses protective earthing; Class II equipment uses double or reinforced insulation. Never remove an earth connection or alter connector keying to make a lead fit.
The term “kettle lead” is often used loosely. A C13 lead is a cold-condition connector and must not be substituted where a hot-condition C15 or another specified connector is required.
Less common connections
For older, specialised or unfamiliar couplers, send us a clear photograph, the equipment model and any moulded markings. We will help identify the connection before recommending a replacement.
Standards and product information
The IEC 60320 series covers appliance couplers. IEC 60320-3 covers standard sheets and gauges and is read alongside IEC 60320-1.
For the rating and approvals of a particular MCC lead or connector, check the information and any datasheet provided on its product page. If you need a datasheet or confirmation of suitability, contact MCC Power Solutions with the product details and intended application.
Need help choosing a cable assembly? Send a bespoke enquiry with your equipment details and requirements.
Technical reference reviewed October 2026. Confirm the specification and approvals of the individual product before ordering.