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Locking Devices, Twist-Lock®, Watertight Safety Shroud, Male Plug, 20A 3-Phase Wye 120/208V AC, L21-20P

By Hubbell Wiring Device-Kellems 

Catalog ID: HBL2511SW

By Hubbell Wiring Device-Kellems
Catalog ID:  HBL2511SW
Locking Devices, Twist-Lock®, Watertight Safety-Shroud®, Male Plug, 20A 3-Phase Wye 120/208V AC, 4-Pole 5-Wire Grounding, NEMA L21-20P, Screw Terminal, Black PBT housing, White PBT clamps.

Shrouded Watertight Construction

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Product Details


Application Extra Heavy Duty Industrial Crimping
Cord Range 0.350"-1.150" (9-29)
Crimp Force Capacity 12 ton
Environmental Conditions Watertight
Horsepower - Maximum 2
Material Composite
Material - Mounting Hardware Cord Mounted
OEM Brand Name Hubbell Wiring Device-Kellems
Operating Temperature Maximum continuous 75°C and minimum -40°C without Impact
  • Electrical - Current Interrupting - Certified for current interrupting at full rated current
  • Electrical - Dielectric Voltage - Withstands 2,000V minimum
  • Environmental - Flammability - V0 per UL94 or CSA 22.2 No.0.17
  • Environmental - Moisture Resistance - Type 4, 4X, 12, IP66 suitability
  • Environmental - Operating Temperatures - Maximum Continuous 75°C Minimum -40°C (w/o impact)
  • Mechanical - Terminal Accommodation - #16 AWG - #8 AWG stranded copper wire only.
  • Mechanical - Terminal Identification - Terminals identified in accordance with UL 498
Type Die
UPC 783585231525


Dimensions 2.94 in x 2.94 in x 4.40 in
Display Size Standard Sized
Height 4.40 in
Weight 0.75 lb

Electrical Ratings

Connectivity Pressure Terminal Screws
Current Rating 20 A
Dielectric Strength Withstands 2,000V minimum
Phase 3 Phase WYE

Conductor Related

Cable Range 0.350 - 1.150 in
Cord Type All Listed Portables

Certifications and Compliance

Industry Standard(s) UL Listed, CSA Certified To Type 4, 4X And Type 12


Carton Quantity 10

Resources and Downloads

Installation/Instruction Manual (IOM)


Insulgrip Twist-Lock and Straight Blade Devices

Twist-Lock Devices

Engineering Drawing