Eaton AH1221L Locking switch - UL Recognized cULus Listed
Part Number: AH1221L
Quick Summary
The Eaton AH1221L locking switch is a single-pole, maintained-contact device used in industrial control panels to enforce lockout safety. In busy facilities, accidental energization and unplanned downtime can create safety risks and production delays. This model carries UL Recognized and cULus Listed certifications, with NAFTA compliance supporting cross-border sourcing and streamlined procurement. Its locking actuator and maintained closure help ensure operators cannot remove a safety interlock mid-cycle. Designed for #14-10 AWG wiring and a 120/277 V supply, the AH1221L provides reliable, code-compliant performance in demanding environments. By pairing robust safety features with straightforward installation, it supports faster panel assembly and long-term operating reliability for industrial automation projects.
Product Information
Extended Description
AH1221L Eaton: Eaton locking switch, #14-10 AWG, 20A, 120/277V, Back and side wiring, Key actuator, Maintained closure, Brown, Single-pole, Urea
Product Name
Eaton locking switch
Catalog Number
AH1221L
UPC
032664706318
Product Length/Depth
1.31 in
Product Height
3.28 in
Product Width
1.05 in
Product Weight
0.22 lb
Compliances
NAFTA
Certifications
UL Recognized cULus Listed
Allowable wire size
#14-10 AWG
Torque rating
14 lbf-inch
Special features
Locking
Type
Switch
Amperage Rating
20A
Voltage rating
120/277 V
Application
Industrial
Wiring method
Back and side
Switch type
Single-pole
Closure type
Maintained
Material
Urea
Actuator
Key
Color
Brown
Arrow Hart - Connecting Safety to Reliability since 1890
Eaton Specification Sheet - AH1221L
Eaton Specification Sheet - AH1221L
Feature: Locking and maintained closure provide a tamper-resistant contact state. Business Impact: Reduces the risk of accidental startup during maintenance, lowering incident-related downtime and insurance exposure. Application: Ideal for lockout/tagout safety in manufacturing equipment where strict control of energization is required. Feature: 20A amperage rating at 120/277 V. Business Impact: Supports common industrial control circuits without oversizing, enabling cost-effective panel design and fewer components. Application: Suitable for motor starters, control stations, and machine controllers in factory automation. Feature: Back and side wiring with #14-10 AWG conductors. Business Impact: Simplifies field wiring and terminal accessibility, reducing installation time and wiring errors. Application: Quick integration into existing panels and retrofit projects in industrial facilities. Feature: Torque rating of 14 lbf-inch. Business Impact: Ensures secure, vibration-resistant connections, improving reliability in high-cclusion environments and long service intervals. Application: Environments with equipment vibration or frequent cycling. Feature: Material is Urea, Color Brown. Business Impact: Durable housing resistant to typical industrial contaminants, contributing to longer lifecycle and reduced replacement costs. Application: Harsh factory floors, assembly lines, and control panels. Feature: Certifications UL Recognized, cULus Listed, NAFTA compliance. Business Impact: Compliance assurance simplifies audits and cross-border procurement, enabling streamlined supply chains for global projects. Application: Required for regulated industrial automation deployments and multi-site installations. Feature: Product is a single-pole, back- or side-wired switch with a Key actuator and Maintained operation. Business Impact: Flexible mounting and operation options improve installation efficiency and safety handover during maintenance. Application: Suitable for panel-mounted control points, safety interlocks, and industrial control stations.
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FAQs
The AH1221L supports back and side wiring for #14-10 AWG conductors, enabling flexible panel layouts and straightforward field installation with a recommended torque of 14 lbf-in for secure terminations.
The switch is rated for 20A at 120/277V. This accommodates typical industrial control circuits, motors, and contactors, allowing efficient integration without over-sizing components.
Ideal for industrial control panels, safety interlocks, and lockout/tagout workflows in manufacturing and processing facilities where reliable, secure energization control is essential.
The AH1221L is UL Recognized and cULus Listed with NAFTA compliance, ensuring regulatory conformity, safer procurement across borders, and easier audit readiness for regulated projects.
Its locking actuator, maintained closure, and robust construction minimize unintended starts during maintenance, reduce wiring errors, and extend service life, delivering measurable reductions in downtime and replacement costs.