The HBL4779C is a 2-pole Twist-Lock flanged inlet connector designed for 277 VAC applications at 15 amperes, featuring a CEMA node designation of L5-15 and an AC horsepower rating of 0.5 HP. This nylon-bodied connector incorporates color-coded markings that provide quick, positive identification to ensure fast and accurate mating of devices with identical voltage ratings. The device includes a picture window for wiring facilitation, enabling proper wiring connections, and features powerful cord-gripping jaws designed to eliminate conductor strain on terminals. The HBL4779C is part of Hubbell's comprehensive Twist-Lock wiring device line and is available in multiple configurations, with weatherproofing accessories available for enhanced environmental protection. This connector is ideal for industrial and commercial applications requiring reliable 277 VAC power distribution with secure, keyed connections.