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Product Specifications:
| Item | Locking Plug |
| Amps | 20A |
| Blade Material | Copper Alloy |
| Body Material | Nylon |
| Connection Orientation | Straight |
| For Max. Cable Dia. | 1.15" |
| For Min. Cable Dia. | 0.35" |
| Grade | Federal Specification |
| Grounding | Grounded |
| Housing Color | Black, White |
| Ip Rating | IP20 |
| Market | Industrial |
| Max. Operating Temp. | 75°C |
| Max. Wire Size | 8 AWG |
| Min. Operating Temp. | -40°C |
| Min. Wire Size | 14 AWG |
| Nema Configuration | L22-20 |
| Nema Plug Configuration | L22-20P |
| No. Of Blades | 5 |
| No. Of Poles | 4 |
| No. Of Wires | 5 |
| Phase | 3 |
| Polarized | Yes |
| Product Datasheet | hubbell-hbl2521st.pdf |
| Resistance Properties | Chemical Resistant, Impact Resistant |
| Series | EDGECONNECT™ Series |
| Shrouded | No |
| Ul 94 Flammability Rating | HB |
| Voltage | 277/480V AC |
| Wire Connection Type | Spring Clamp Terminals |
| Wiring Style | Standard |
Shipping Info:
| Ship weight (kg) | 0.14 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
| Country of Origin | CN |
Documentation:
Product Variants
| Product | Model | No. Of Poles | Voltage | Phase | Amps | Housing Color | Wire Connection Type | For Max. Cable Dia. | For Min. Cable Dia. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
HBL2411ST | 3 | 125/250V AC | 1 | 20A | Black, White | Spring Clamp Terminals | 1.15" | 0.35" | €74.51 | |
![]() |
HBL2711ST | 3 | 125/250V AC | 3 | 30A | Black, White | Spring Clamp Terminals | 1.15" | 0.35" | €100.78 | |
![]() |
HBL2421ST | 3 | 250V AC | 3 | 20A | Black, White | Spring Clamp Terminals | 1.15" | 0.35" | €78.34 | |
![]() |
HBL2721ST | 3 | 250V AC | 3 | 30A | Black, White | Spring Clamp Terminals | 1.15" | 0.35" | €91.82 | |
![]() |
HBL2731ST | 3 | 480V AC | 3 | 30A | Black, White | Spring Clamp Terminals | 1.15" | 0.35" | €100.41 | |
![]() |
HBL2821ST | 4 | 277/480V AC | 3 | 30A | Black, White | Spring Clamp Terminals | 1.15" | 0.35" | €121.91 | |
![]() |
HBL2311ST | 2 | 125V AC | 1 | 20A | Black, White | Spring Clamp Terminals | 0.93" | 9/25" | €47.08 |
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HUBBELL HBL2521ST Locking Plug, L22-20P, 277/480V AC, 20 A, 4 Poles, Black/White, Spring Clamp Terminals
€82.28 /unit







