Eatons Arrow Hart color coded locking devices are an industry-first solution that adds six voltage rating color codes consistent with IEC 60309 standards to locking plugs, connectors, inlets, outlets and receptacles to provide you a quick, clear and easy way to identify your circuit voltage. Available in standard NEMA configurations for 20A and 30A applications, the devices ensure long-lasting, dependable service in the most demanding environments, are built with a contemporary flare and ergonomic design for a comfortable yet secure feel and offer excellent reliability and durability.