Hubbell Wiring HBL2811 NEMA L21-30P Twist-Lock® Locking Plug, 30A 4-Pole 5-Wire

Hubbell Wiring HBL2811 NEMA L21-30P Twist-Lock® Locking Plug

The Hubbell Wiring HBL2811 is a heavy-duty Twist-Lock® locking plug engineered for demanding 3-phase power applications. Configured to the NEMA L21-30P pattern, this 4-pole, 5-wire plug is rated 30-Amp at 120/208-Volt AC 3-Phase Y service, delivering a secure, vibration-resistant connection for equipment that cannot tolerate accidental disconnects. The Insulgrip® body, finished in Black/White, provides a comfortable, insulated grip while making the connector easy to identify in busy panel, cord-set, and job-site environments.

Key Features

• NEMA Configuration: Built to the NEMA L21-30P pattern, ensuring guaranteed mating compatibility with corresponding L21-30 locking receptacles and connector bodies.
• 4-Pole, 5-Wire Design: Configured for 120/208-Volt AC 3-Phase Y systems, supporting balanced 3-phase loads plus neutral and ground conductors in a single plug.
• 30-Amp Rating: Rated 30-Amp at 120/208-Volt AC 3-Phase Y for dependable power delivery to connected equipment and cord sets.
• Twist-Lock® Locking Mechanism: A rotating locking collar secures the mated connection and resists accidental disconnection from vibration, tension, or cord pull.
• Insulgrip® Construction: Insulated grip housing improves handling comfort and control when connecting or disconnecting under load.
• Black/White Color Scheme: A high-visibility Black/White housing simplifies plug identification in multi-circuit and multi-phase installations.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Industrial 3-Phase Power Distribution
• Portable and Temporary Power Connections
• Generator and Standby Power Hookups
• Heavy Equipment and Machinery Power Cords
• Commercial and Industrial Facility Wiring

Why Hubbell Wiring?

Hubbell Wiring products are built for the rigors of industrial and commercial electrical work, and the HBL2811 is no exception. Its Twist-Lock® locking design and Insulgrip® construction reflect a focus on secure, durable connections that hold up to repeated mating cycles in demanding 3-phase power environments. When your application calls for a dependable NEMA L21-30P locking plug rated 30-Amp at 120/208-Volt AC 3-Phase Y, the HBL2811 delivers the connection integrity electrical professionals rely on.