Eaton AHL2120CBK Locking Connector - NOM cULus Listed
Part Number: AHL2120CBK
Quick Summary
AHL2120CBK locking connector provides secure, field-attachable power connections for industrial equipment and electrical enclosures. Engineers frequently contend with downtime caused by loosening connections, miswired terminations, or incompatible cord sets, and the AHL2120CBK delivers a secure ultra grip locking solution with straightforward back-wire installation. It carries RoHS compliance and NOM cULus listing, plus a 20A, 120/208V rating for consistent, safe power delivery across industrial applications. Designed for heavy-duty environments, the nylon body and brass contacts support #16–8 AWG wiring with a four-pole L21-20 configuration, offering reliable performance, reduced maintenance needs, and easy field maintenance in demanding facilities.
Product Information
Extended Description
AHL2120CBK Eaton: Eaton Arrow Hart ultra grip locking connector, #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 connector
Catalog Number
AHL2120CBK
UPC
032664738234
Product Length/Depth
4.19 in
Product Height
2.31 in
Product Width
2.28 in
Product Weight
0.54 lb
Compliances
RoHS Compliant
Certifications
NOM cULus Listed
Special features
Ultra grip locking connector
Type
Locking connector
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
Grounding 5
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
Industrial grade L21-20 locking devices spec sheet
Industrial grade L21-20 locking devices spec sheet
Ultra grip locking mechanism enhances retention and reduces unintentional disconnections in vibration-prone environments. This directly lowers downtime and improves operator safety by ensuring a reliable power link during high-load cycles and frequent cycling. The design supports back-wiring with straightforward terminal access, making it a practical choice for panel installations, motors, and industrial equipment where service intervals matter. With a 20A amperage rating and a 120/208V three-phase (L21-20) configuration, the AHL2120CBK accommodates typical industrial motors and equipment without crowding control panels. The locking action also helps maintain code-compliant, continuous power delivery in harsh environments, reducing rework caused by loosened connections after maintenance or vibration events. This combination supports scalable power distribution for mid-size manufacturing lines and mechanical systems. Wiring method is back-wire friendly and accepts #16-8 AWG conductors, offering flexibility for different cord and cable assemblies. The 0.38-1.16 inch cord diameter range simplifies inventory and field modifications, while the four-pole design with five conductors—including grounding—supports safe, grounded power distribution in industrial settings. The L21-20 configuration aligns with NEMA standards, enabling straightforward cross-compatibility with compatible receptacles. Durable materials and temperature tolerance enhance long-term reliability. The nylon body and nylon face resist impact and environmental exposure, while brass contacts provide stable conductivity across varying loads. An operating range of -40 to 60 °C covers cold plant floors and hot manufacturing lines, and RoHS compliance ensures regulatory alignment for modern facilities. Installation and maintenance efficiency are improved by clear torque guidance: 14-16 lbf-in for #10-14 AWG and 20 lbf-in for #8 AWG, ensuring reliable connections without conductor damage. The compact four-pole, four-pole configuration and back-wiring support fast field deployment, reducing training time and enabling procurement standardization across industrial facilities.
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FAQs
The AHL2120CBK supports back-wiring with conductors sized #16-8 AWG, enabling simple field terminations. It accepts a cord diameter range of 0.38 to 1.16 inches, and torque guidance for secure clamping: 14-16 in-lbf for #10-14 AWG and 20 in-lbf for #8 AWG. This combination reduces installation time, minimizes conductor damage, and improves consistency across assemblies in industrial panels.
Yes. The AHL2120CBK is a four-pole, L21-20 locking connector designed for 3ØY, 120/208 V systems with a 20A rating. It provides secure, four-pole connections ideal for motors, conveyors, and machinery in manufacturing environments, while the locking feature helps prevent accidental disconnections during high-load operation.
This connector carries RoHS compliance and NOM cULus Listed certification, reflecting regulatory alignment for environmental and electrical safety requirements in North American facilities. These certifications support compliance programs, reduce risk during audits, and simplify procurement through a clearly certified industrial power connection solution.
Torque guidance for termination is explicit: 14-16 lbf-in for #10-14 AWG conductors and 20 lbf-in for #8 AWG conductors. Following these values guarantees proper clamping force, minimizes conductor damage, and ensures long-term electrical reliability in demanding industrial environments.
Industries such as manufacturing, automotive, material handling, and packaging benefit from the AHL2120CBK due to its secure locking, back-wire convenience, and rugged nylon/brass construction. Use cases include power distribution in control panels, motor connections, and industrial enclosures where vibration resistance, quick installation, and regulatory compliance are critical for uptime and safety.