Shop DC power plugs, jacks and adapters for low-voltage electronic equipment, power supplies, cable assemblies and equipment repair. Wallco offers assembly-type barrel plugs, DC jacks and connector adapters across multiple inner and outer diameter configurations.
Compare products by plug or jack type, barrel dimensions, connector gender, termination method and equipment power requirements.
DC power plugs and jacks provide low-voltage power connections for electronic equipment, power supplies, control devices and cable assemblies. Barrel-style connectors are available in several outer and inner diameters, and connectors that appear similar may not mate correctly if their dimensions differ.
DC barrel plugs are commonly used on the cable or power-supply side of a low-voltage connection. Assembly-type plugs allow conductors to be terminated to the connector for custom cable construction, equipment repair and replacement applications.
DC jacks provide the mating receptacle for compatible power plugs. Depending on the design, jacks may be intended for cable assembly, panel installation or printed circuit board mounting.
DC connectors are commonly identified by their outer barrel diameter and inner contact diameter. Common sizes can look nearly identical, so both measurements should be verified before selecting a plug, jack or adapter.
DC power adapters can transition between compatible barrel dimensions when a power source and device use different connector sizes. A physical adapter changes the connector interface but does not change the electrical output of the power supply.
Barrel connectors may be wired center-positive or center-negative depending on the equipment. Connector dimensions alone do not determine polarity, so the power supply and equipment requirements must be verified before making a connection.
A compatible connector does not guarantee that a power source is electrically suitable for the equipment. Confirm the required DC voltage, polarity and available current separately from the connector dimensions.
Assembly-type DC connectors are useful for building replacement power leads, repairing existing equipment and creating custom low-voltage cable assemblies. The termination style should be matched to the conductor size and intended mechanical strain relief.
Identify whether the equipment requires a plug or jack, then verify outer diameter, inner diameter, termination method and connector mounting style. Before applying power, also confirm the equipment's voltage, polarity and current requirements.
