Eaton AH1222L Locking Switch - UL Recognized, cULus Listed
Part Number: AH1222L
Quick Summary
Eaton locking switch safely controls industrial circuits in control panels. Maintenance teams routinely face accidental energization and wiring mix-ups during servicing. This AH1222L model uses a keyed actuator with maintained closure to prevent unintentional operation. It carries UL Recognized, cULus Listed, and NAFTA compliance for safer, border-spanning deployments. With back and side wiring, a 20A rating at 120/277V, and a compact 1.31 in depth, it streamlines installation and helps maintain uptime. This translates to faster wiring, reduced commissioning time, and lower risk of electrical faults in harsh industrial environments. Overall, AH1222L contributes to safer, compliant operations while simplifying procurement with common spec.
Product Information
Extended Description
AH1222L Eaton: Eaton locking switch, #14-10 AWG, 20A, 120/277V, Back and side wiring, Key actuator, Maintained closure, Brown, Two-pole, Urea
Product Name
Eaton locking switch
Catalog Number
AH1222L
UPC
032664706325
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
Two-pole
Closure type
Maintained
Material
Urea
Actuator
Key
Color
Brown
Arrow Hart - Connecting Safety to Reliability since 1890
Eaton Specification Sheet - AH1222L
Eaton Specification Sheet - AH1222L
Locking mechanism for the AH1222L ensures the switch stays in the selected position during maintenance, preventing unintended energization. The business impact is clear: reduced risk of electrical injuries and equipment damage, which translates into lower downtime and safer changeovers in production lines. This is ideal for industrial panels and safety interlocks in forging, packaging, or material handling environments. The device supports #14-10 AWG conductors in both back and side wiring, simplifying field termination and reducing install time, which translates to faster panel builds and lower labor costs on site. With a 20A rating at 120/277V, it accommodates common control circuits without oversizing hardware or wiring. The two-pole design with maintained closure and a keyed actuator delivers reliable, tamper-resistant operation for motors and feeders in harsh environments. Its urea housing adds durability, especially in dusty or chemical-adjacent settings while still permitting straightforward maintenance. Overall compatibility with standard control panels reduces spare parts variety and accelerates procurement for OEMs and integrators, supporting compliance-driven projects and safer line starts.
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FAQs
Yes. AH1222L accepts #14-10 AWG conductors and supports both back and side wiring, enabling flexible terminations in control panels. The device uses a torque specification of 14 lbf-in for secure connections, and the 20A, 120/277V rating covers most standard industrial control circuits, simplifying field wiring and reducing the need for multiple connectors.
AH1222L carries UL Recognized and cULus Listed certifications, ensuring safety compliance for US and Canadian use. It also references NAFTA compliance, aiding cross-border procurement and shipment. These certifications support risk reduction in design reviews, facilitate customer qualifications, and help meet regulatory requirements for industrial equipment in multinational projects.
Yes. The AH1222L is a maintained-contact switch with a locking feature and key actuator, designed for applications where the circuit must stay on or off until intentionally changed. This makes it suitable for motor control, safety interlocks, and panel-mounted control stations where inadvertent operation must be prevented during maintenance or service work.
Terminations should be torqued to 14 lbf-in as specified for AH1222L. This ensures secure electrical contact without over-tightening, which could damage the conductor insulation or device terminals. Proper torque improves reliability in vibration-heavy environments and supports compliant, durable field installations for 20A loads at 120/277V.
Typical applications include industrial control panels, motor control stations, and safety interlock setups in manufacturing lines. The two-pole design, maintained closure, and locking feature support secure on/off control for equipment like conveyors, presses, and packaging machines, while the back/side wiring capability and 20A rating streamline installation and maintenance in harsh industrial settings.