Eaton AHL2120PBK Locking Plug - RoHS Compliant
Part Number: AHL2120PBK
Quick Summary
The Eaton AHL2120PBK locking plug is a rugged, back-wired power connector designed for industrial equipment. Maintaining secure connections in harsh environments can be time-consuming and error-prone without a locking interface you can trust. It carries RoHS compliance and cULus Listed NOM certifications, supporting regulatory requirements in diverse markets. The ultra grip design, nylon body, and L21-20 four-pole configuration deliver dependable performance in a compact footprint. Back wiring simplifies field installation, and the 0.38–1.16 in cord diameter range accommodates common enterprise cables. With a wide operating temperature and clearly defined torque specs, it supports durable, repeatable connections in demanding applications, delivering higher uptime and lower maintenance costs over the life of the system.
Product Information
Extended Description
AHL2120PBK Eaton: Eaton locking plug, #16-8 AWG, 20A, Industrial, 120/208V, Back wiring, Black, Ultra grip, L21-20, Four-pole, Five-wire, Nylon
Product Name
Eaton Arrow Hart ultra grip locking plug
Catalog Number
AHL2120PBK
UPC
032664738258
Product Length/Depth
4.19 in
Product Height
2.31 in
Product Width
2.28 in
Product Weight
0.4 lb
Compliances
RoHS Compliant
Certifications
cULus Listed NOM
Special features
Locking plug
Type
Locking plug
Amperage Rating
20A
Voltage rating
3ØY 120/208 V
Contact material
Brass
Application
Industrial
Device grade
Extra heavy-duty industrial specification grade
Wiring method
Back
Number of wires
5 Grounding
Number Of Poles
Four-pole
Color
Black
Cord diameter
0.38-1.16 in (9.5-29.4 mm)
Material
Nylon
Operating temperature
-40 to 60 °C (-40 to 140 °F)
Allowable wire size
#16-8 AWG
NEMA configuration
L21-20
Torque rating
For #10-14 AWG: 14-16 lbf-inch. For #8 AWG: 20 lbf-inch
Design type
Ultra grip
Face/body material
Nylon
Arrow Hart - Connecting Safety to Reliability since 1890
Eaton Specification Sheet - AHL2120PBK
Eaton Specification Sheet - AHL2120PBK
Feature: Four-pole, five-wire locking plug design provides a secure, multi-conductor connection for 3ØY 120/208 V systems. Business Impact: Reduces miswiring risk and minimizes unplanned downtime due to disconnections. Application: Suitable for industrial motors and power distribution panels using L21-20 configurations. Feature: Ultra grip nylon body with locking mechanism. Business Impact: Improves mate/demate reliability in dirty or vibration-prone environments, lowering maintenance calls. Application: Heavy-duty equipment in manufacturing and processing facilities.Feature: Back wiring method. Business Impact: Enables faster field terminations and cleaner panel layouts, reducing install time and labor costs. Application: Retrofit jobs and new installations on control panels and enclosures.Feature: 120/208 V, 20 A rating. Business Impact: Aligns with common plant power distribution without adapters, improving compatibility and inventory management. Application: Industrial equipment, motors, and distribution boards.Feature: Wide operating temperature range (-40 to 60 °C). Business Impact: Maintains performance in extreme environments, reducing failure rates. Application: Outdoor and indoor facilities with temperature variability.Feature: RoHS compliant and cULus Listed NOM. Business Impact: Supports regulatory compliance and safety standards, enabling procurement across regulated markets. Application: Industrial buyers seeking compliant, durable locking devices for critical systems.
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FAQs
The AHL2120PBK uses a four-pole, five-wire configuration (L21-20) with back-wiring. It supports 120/208 V, 20 A service and accepts #16-8 AWG conductors. Termination torque is specified to ensure reliable connections, reducing loosening due to vibration and heat. This makes it ideal for industrial equipment and panel assemblies.
Yes. The AHL2120PBK is designed for L21-20, four-pole, five-wire use in industrial settings. Its back-wiring method and nylon body support robust, secure connections for 120/208 V systems, simplifying installation on machines, controllers, and power distribution panels.
The plug operates from -40 to 60 °C (-40 to 140 °F) and features a nylon body with brass contact material. This combination provides durability in extreme environments while maintaining reliable electrical contact and resistance to environmental stress.
The AHL2120PBK is RoHS compliant and cULus Listed NOM. These certifications help ensure regulatory compliance in many markets, support safety and reliability requirements for industrial equipment, and simplify procurement for regulated facilities.
Torque specifications are: For #10-14 AWG conductors, 14-16 lbf-in; for #8 AWG conductors, 20 lbf-in. Proper torque ensures secure connections, reduces hotspot risk and connection failures, lowers maintenance calls, and improves uptime and overall return on investment for critical automation assets.