Hubbell HBL1221BK Single Pole Toggle Switch 20A 277V

Product Description

The HUBBELL HBL1221BK is a single-pole, toggle-type AC switch rated for 20 amperes at 120 to 277 volts AC, designed for industrial wiring applications. The body is constructed of thermoset with an abuse-resistant nylon toggle in black. A one-piece rivetless copper alloy spring contact arm and terminal plate maintain proper contact alignment for extended service life. Large silver alloy contacts reduce contact erosion. The switch includes a one-piece integral grounding terminal with an 8 AWG brass screw for a low-resistance ground path, and a stainless steel automatic grounding clip ensures grounding continuity between the mounting strap and a metal wall box. Licensed electricians and industrial maintenance professionals handle installation of this device.

The HBL1221BK is suited for industrial facilities requiring reliable branch-circuit switching at voltages up to 277 VAC. It handles motor loads up to 1 HP at 120 volts and 2 HP at 277 volts, making it appropriate for lighting circuits, machinery controls, and general-purpose industrial panel or wall-box applications. Back and side wiring options provide flexibility during rough-in. Back wire entrance points accept two wires for feed-through capability, eliminating the need for pigtailing. The color-coded base identifies the amperage rating during termination, and prominent amperage marking allows quick visual identification on the job.

Key Features

• Single-pole toggle operation rated 20A at 120 to 277V AC
• Motor load rating: 1 HP at 120V, 2 HP at 277V
• One-piece rivetless copper alloy spring contact arm ensures proper contact alignment and long service life
• Large silver alloy contacts reduce contact erosion over time
• One-piece integral grounding terminal with 8 AWG brass screw provides low-resistance ground path
• Stainless steel automatic grounding clip maintains continuity between mounting strap and metal wall box
• Back wire entrance accepts two wires for feed-through capability, no pigtailing required
• UL and CSA listed for industrial applications

Compatibility

Designed as an OEM-style industrial-grade single-pole toggle switch for use in commercial and industrial branch-circuit wiring applications requiring 20A switching capacity at 120 to 277V AC.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Disconnect and lock out power to the circuit at the panel before wiring or removing an existing device. Use the strip gauge on the switch body for accurate conductor stripping length. Back and side terminal options accommodate various box configurations; large brass binding head screws with deep slots secure wire connections.

Technical Specifications

• Current Rating: 20 amperes
• Voltage Rating: 120 to 277 VAC
• Power Rating: 1 HP at 120V, 2 HP at 277V
• Operation Type: Single Pole
• Switch Type: Toggle
• Wiring: Back and Side
• Body Material: Thermoset
• Toggle Material: Nylon
• Color: Black
• Temperature Rating: -40 to 75 degrees C
• Dimensions: 1.31 inches W x 1.13 inches D x 4.06 inches H
• Package Weight: 0.11 pounds
• Approvals: UL, CSA
• Country of Origin: CN

Standard Information

• Brand: HUBBELL
• Manufacturer Part Number: HBL1221BK