Key Features
- IEC 60320 C20 plug to C21 connector
- C20 plug mates with standard C19 outlets on PDUs, UPS systems, and high-current power sources
- C21 connector is backwards compatible — mates with both C20 and C22 inlets
- C21 rated for higher-temperature applications (up to 155°C) compared to standard C19
- Rated for 20 Amps, 250 Volts AC
- United States & Canada cULus certified
- 1.8 Meter / 6 Feet cord length
Documentation
- Technical Drawing
- Certificate of Compliance
- Certificate of Origin
- REACH Compliance
- RoHS Compliance
- Prop 65 Declaration
- WEEE Compliance
- Product Lifecycle Statement
- ISO 9001:2015 QMS Certificate
Specifications
| Male Plug | IEC320 C20 |
| Female Connector | IEC320 C21 |
| Voltage | 250 Volts |
| Amperage | 20 Amps |
| Length | 1.8 Meter / 6 Feet |
| Tolerance | ± 50 mm / ± 2 inches for molded cords± 100 mm / ± 4 inches for mechanical cords |
| Conductor Size | 12 Gauge AWG |
| Conductor Count | 3 wires |
| Conductor Color Code | Black, White, Green | North American Color Code (NACC) |
| Outside Diameter | 11.9-12.3mm |
| Cable Jacket | North America SJT |
| Jacket Material | PVC |
| Jacket Temperature Rating | 105° C |
| Color | Black |
| Testing | Each cord is tested for dielectric voltage-withstand (Hi-Pot), polarization and continuity. |
| Certification(s) | US & Canada - cULus |
| Packaging | Loose & Bundled |
Application Notes
IEC 60320 C20 to C21 power cords are rack jumper cords designed for high-current, higher-temperature applications in data center and server room environments. The C20 plug mates with a standard C19 outlet on a rack PDU or UPS, while the C21 connector on the equipment end delivers power to devices with a C20 or C22 inlet.
The C21 connector is rated for higher operating temperatures (up to 155°C) compared to the standard C19, and is backwards compatible with both C20 and C22 inlets — providing broader equipment compatibility in a single cord. This makes C20 to C21 cords well suited for equipment that runs warm, including managed network switches, blade servers, and high-density equipment in thermally demanding environments.
Black power cords are the standard choice for data center and server room deployments, providing a clean, unobtrusive appearance that complements most rack equipment and accessories.
Product FAQs
What is a C20 to C21 power cord used for?
C20 to C21 cords are rack jumper cords. The C20 plug mates with a C19 outlet on a PDU or UPS, and the C21 connector delivers power to equipment with a C20 or C22 inlet in environments where a higher-temperature rated connector is required.
What is the difference between a C21 and a C19 connector?
Both are high-current IEC 60320 connectors, but the C21 is rated for higher operating temperatures (up to 155°C) compared to the C19. The C21 is also backwards compatible, mating with both C20 and C22 inlets, while C19 only mates with C20 inlets.
Is a C20 to C21 power cord grounded?
Yes. The C20 plug includes a protective earth pin that carries ground from the source through the cord to the equipment.
