Eaton L1620RWBK Watertight Locking Receptacle - 480V IP66
Part Number: L1620RWBK
Quick Summary
The Eaton L1620RWBK watertight locking receptacle is engineered for secure, 3-phase power connections in rugged industrial environments. When moisture, dust, or water exposure threatens electrical reliability, downtime and maintenance costs rise. This unit carries cULus Listed NOM certification and robust IP66 protection, along with compatible NEMA configurations such as NEMA 12 and NEMA 4X, ensuring safe operation in demanding settings. Built for back-wiring with a glass-filled nylon body and nickel-plated bronze contacts, it accelerates installation while delivering long-term durability for industrial equipment and harsh facilities.
Product Information
Extended Description
L1620RWBK Eaton: Eaton Arrow Hart watertight locking receptacle, #14-8 AWG, 20A, Industrial, 480V, Back wiring, Black, Single, Watertight, L16-20, Three-pole, Four-wire, Thermoplastic
Product Name
Eaton Arrow Hart watertight locking receptacle
Catalog Number
L1620RWBK
UPC
032664709050
Product Length/Depth
6.75 in
Product Height
4 in
Product Width
4.25 in
Product Weight
1.025 lb
Certifications
cULus Listed NOM
Amperage Rating
20A
NEMA configuration
L16-20
Number Of Poles
Three-pole
Number of wires
Grounding 4
Receptacle type
Locking
Torque rating
For #10-14 AWG: 14-16 lbf-inch. For #8 AWG: 20 lbf-inch
Voltage rating
3Ø 480 V
Environmental resistance
NEMA 12 NEMA 4X NEMA 3 IP66 NEMA 3R NEMA 4
Allowable wire size
#14-8 AWG
Wiring method
Back
Color
Black
Contact material
Nickel plated bronze
Application
Industrial
Design type
Single receptacle
Device grade
Extra heavy-duty industrial specification grade
Face/body material
Glass filled nylon
Material
Thermoplastic
Special features
Watertight
Type
Locking receptacle
Watertight locking design provides secure, vibration-resistant connections in wet and dusty environments. This reduces the risk of arcing and unplanned shutdowns, delivering measurable uptime improvements for manufacturing lines and outdoor equipment. The back-wiring capability enables faster terminations with fewer field splice points, cutting installation time and labor costs while improving wiring quality on busy shop floors. The glass-filled nylon face and thermoplastic body combine impact resistance with chemical and UV durability, extending service life in washdowns, splash zones, and outdoor installations. The nickel-plated bronze contacts offer reliable conductivity and corrosion resistance, supporting consistent voltage performance and reduced maintenance intervals in industrial plants. With NEMA 12/4X and IP66 protections, the unit meets stringent codes for harsh environments, supporting compliance while enabling straightforward retrofit in existing L16-20 configurations.
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FAQs
The L1620RWBK supports back wiring and allowable wire sizes of #14-8 AWG, enabling straightforward termination in panel and equipment enclosures. To install, strip conductors per the harness guidelines, secure them under the terminal screws to specified torque, and verify that insulation is intact. This minimizes field splices, reduces termination errors, and speeds commissioning on new builds or retrofits.
This receptacle is a three-pole, four-wire L16-20 configuration designed for 3Ø, 480 V systems at 20 A. The wiring method is back wiring, with four wires including a grounding conductor. For reliable performance, confirm that the supply wiring matches the #14-8 AWG range and that terminals are tightened to the listed torque values to maintain solid, compliant connections.
Yes, the L1620RWBK carries IP66 protection, along with NEMA ratings such as 12 and 4X, making it suitable for outdoor and washdown environments. This combination protects against dust and powerful water jets, enabling durable operation in outdoor installations, chemical plants, and facilities with rigorous cleanliness standards.
Torque must be maintained as specified: 14-16 lbf-in for #10-14 AWG conductors, and 20 lbf-in for #8 AWG conductors. Using the correct torque ensures secure terminations, minimizes resistance heat, and helps preserve the integrity of the locking mechanism over time in industrial settings.
The combination of watertight sealing, corrosion-resistant nickel-plated bronze contacts, and durable thermoplastic housing reduces corrosion-related faults and maintenance visits. This translates to lower downtime, longer service intervals, and a favorable return on investment for facilities that operate in challenging environments such as outdoor, washdown, or chemically aggressive areas.