Power Connectors

Barrel jacks, IEC, NEMA, and regional power plugs.

3 connector types documented

DC Barrel Connector

Max Speed

0 Mbps

Max Power

120W

Connector

2 pins, 5.5×5.5mm

Common Uses

5.5x2.1mm and 5.5x2.5mm look nearly identical but 2.1mm plugs are loose in 2.5mm jacks

IEC 60320 Appliance Couplers

Max Speed

0 Mbps

Max Power

4000W

Connector

3 pins, 30×22mm

Common Uses

C13 fits into C14 inlets, C14 is the plug on the device - confusing naming

NEMA AC Power Plugs and Receptacles

Max Speed

0 Mbps

Max Power

12500W

Connector

3 pins, 32×22mm

Common Uses

5-15 and 5-20 receptacles look similar but 5-20 has a T-shaped neutral slot

About Power Connectors

Power connectors vary by region, voltage, and current requirements. Using the wrong connector or adapter can be dangerous.