The IEC 60320 C13 C14 C15 C19 C20 connector family defines a widely used set of power entry modules for data centers, commercial PCs, and professional equipment. Understanding C13, C14, C15, C19, and C20 variants helps designers choose the right inlet and outlet for thermal performance, current rating, and cable management.
This reference explains key connector types, specification tables, mounting options, and operational guidance for engineers and procurement teams working with IEC 60320 interfacing components.
| Connector | Typical use case | Max current (A) | Temperature rating (°C) |
|---|---|---|---|
| C13 | PC power supply, monitor outlet | 10 | 70 |
| C14 | Power inlet for servers, UPS, printers | 10 | 70 |
| C15 | Appliances, electric kettles, higher-temp equipment | 10 | 120 |
| C19 | High-density server power supplies | 10 | 70 |
| C20 | High current server and network equipment | 16 | 70 |
Standard IEC 60320 C13 and C14 specifications
IEC 60320 defines interchangeable power connectors with standardized mechanical and electrical properties. C13 and C14 are the most common data center and office equipment connectors, supporting 10 A at 250 VAC with a defined contact temperature up to 70 °C. C14 inlet assemblies include strain relief, internal insulation, and compliance markings for safety regions.
These connectors use polarization features and defined dimensional tolerances to prevent incorrect mating. Designers should confirm local regulatory approvals and consider derating at elevated ambient temperatures, altitude, and harmonic content of the load.
High temperature variant C15 for demanding environments
The C15 connector extends the temperature range to 120 °C, making it suitable for appliances and equipment that generate significant heat. It shares the same current rating as C13 and C14 but requires compatible couplers and cords certified for the higher thermal class. C15 plugs are not generally interchangeable with C13 cords in standard installations without verified thermal compatibility.
When specifying C15, evaluate cable insulation material, connector contact plating, and airflow design to maintain system reliability. Use in data center applications only when validated by thermal testing and supplier documentation.
High current option C20 for servers and network gear
IEC 60320 C20 connectors support 16 A loads, enabling higher power delivery in server and network equipment. The C20 inlet pairs with C13 or C19 plugs, allowing flexible power distribution blocks and PDUs to be designed for dense deployments. Contact design and conductor size are optimized to reduce voltage drop and heating under sustained 16 A conditions.
Ensure that downstream PDUs and chassis panels are rated for the increased current and include proper overload protection. Verify strain relief and mounting strategies to accommodate the larger connector body in high-port-density chassis.
Multiple standards C13 C14 C15 C19 C20 global compliance
Global compliance involves multiple standards, including UL, CSA, CE, and regional specifications that reference IEC 60320 mechanically and electrically. C13, C14, C15, C19, and C20 variants must meet insulation class, temperature index, flammability, and tracking resistance requirements for each market. Documentation from suppliers should include test reports and certification numbers for each regional requirement.
When designing equipment for international shipment, select connectors with broad approvals and verify local wiring regulations for conductor color coding, grounding, and labeling. Use compatible cords with correct polarities and grounding arrangements to meet safety and electromagnetic compatibility standards.
Key implementation steps for IEC 60320 power connectivity
- Confirm current and temperature requirements for each device class.
- Choose C13, C14, C15, C19, or C20 connectors based on thermal and electrical specifications.
- Verify supplier certifications for target markets and regulatory compliance.
- Validate cable gauge, contact plating, and strain relief for reliability.
- Test thermal performance and overload behavior in the final chassis configuration.
FAQ
Reader questions
What devices commonly use a C13 inlet and C14 plug in data centers? Servers, network switches, storage arrays, and PDUs often use C13 inlet on the device and a C14 plug on the supplied power cord to connect to PDU outlets. Can I use a C15 connector in place of C13 for higher ambient temperature installations?
Yes, C15 is rated for higher temperatures and can replace C13 when equipment and cabling are fully validated for the 120 °C class and local approvals are maintained.
What is the difference between C19 and C20 connectors for server power? C19 provides the same 10 A rating as C13 but with a slightly different plug profile commonly used in high-density power supplies, while C20 supports 16 A for higher power servers and network equipment. How do I select the right cord set when mixing C13, C14, C19, and C20 connectors?
Select cord sets with correct plug-to-outlet pairing, appropriate current rating, certified strain relief, and suitable conductor size for the circuit ampacity and installation environment.