Eaton AH1203L Locking Switch - UL Recognized / cULus Listed
Part Number: AH1203L
Quick Summary
The Eaton locking switch AH1203L provides secure control for industrial equipment wiring. It integrates a key-actuator and maintained closure to prevent accidental energization during servicing. This design addresses a common safety pain point where equipment can be re-energized during maintenance, risking personnel and production downtime. The device carries UL Recognized and cULus Listed certifications, with NAFTA compliance for cross-border procurement, ensuring regulatory alignment across North American facilities. Built for rugged industrial environments, it supports #14-10 AWG conductors and back-and-side wiring, delivering dependable performance in control panels, machine guarding, and safety interlocks. For contractors and OEMs, the combination of compact dimensions and a 15A, 120/277V rating translates to faster installations and reduced spare parts inventory, driving overall project efficiency.
Product Information
Extended Description
AH1203L Eaton: Eaton locking switch, #14-10 AWG, 15A, 120/277V, Back and side wiring, Key actuator, Maintained closure, Brown, Three-way, Urea
Product Name
Eaton locking switch
Catalog Number
AH1203L
UPC
032664706295
Product Length/Depth
1.31 in
Product Height
3.28 in
Product Width
1.05 in
Product Weight
0.15 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
15A
Voltage rating
120/277 V
Application
Industrial
Wiring method
Back and side
Switch type
Three-way
Closure type
Maintained
Material
Urea
Actuator
Key
Color
Brown
Arrow Hart - Connecting Safety to Reliability since 1890
Eaton Specification Sheet - AH1203L
Eaton Specification Sheet - AH1203L
Locking mechanism with a keyed actuator provides a tangible safety advantage by preventing unauthorized state changes. The maintained closure keeps the circuit de-energized during servicing, reducing operator risk and unplanned downtime. In an industrial control panel, this feature translates into faster safety audits and easier compliance with lockout/tagout procedures. Back and side wiring with #14-10 AWG conductors simplifies terminations and enhances reliability in crowded enclosures. The solid mechanical connection reduces loosening under vibration, improving long-term performance and minimizing rework in field upgrades. This also enables quicker installation in retrofit projects and OEM panel builds. With a 15A rating at 120/277V, AH1203L supports typical industrial loads without overdesign. The robust torque spec of 14 lbf-in ensures consistent connections even in high-cycle environments, while the Urea body withstands common workshop conditions. This combination yields lower failure rates and predictable electrical performance in safety-critical circuits. Three-way switch topology offers flexible control paths within safety interlocks and machine guarding schemes. The locking feature ensures only authorized operators can alter the state, supporting safer startup sequences and streamlined diagnostics during maintenance cycles. This flexibility is particularly valuable in complex automation cells with multiple control tiers. Compact dimensions (1.31 in D, 3.28 in H, 1.05 in W) and a brown Urea body deliver installation efficiency and catalog compatibility. UL Recognized and cULus Listed certifications provide regulatory confidence, while NAFTA compliance eases cross-border sourcing for multinational facilities. These attributes reduce inventory complexity and accelerate deployment in new builds or upgrades.
Get a Quick Quote for a Eaton AH1203L
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton AH1203L?
Enquire Now
FAQs
AH1203L supports back and side wiring for #14-10 AWG conductors, enabling flexible terminations in compact control panels. The 14 lbf-inch torque rating ensures tight, vibration-resistant connections, reducing loosening risks in industrial environments. With a compact 1.31 in depth and 3.28 in height, technicians can route conductors cleanly in crowded enclosures, improving panel density and serviceability.
Locking switches prevent unintended re-energization during servicing by securing the actuator in the chosen state with a key. The maintained closure design eliminates momentary contact, ensuring the equipment remains de-energized through the maintenance window and when guards are open. This reduces injury risk and production downtime, while meeting strict lockout/tagout practices in industrial facilities.
Yes. AH1203L is a three-way switch with a locking feature, designed for industrial control loops that require flexible interlock configurations. The three-way functionality accommodates multiple control paths, while the key actuator ensures only authorized operators can change the state. Combined with back and side wiring and 15A at 120/277V, it supports robust control circuits.
AH1203L carries UL Recognized and cULus Listed certifications, ensuring safety and cross-border applicability for North American installations. It also aligns with NAFTA compliance, supporting procurement in Canada, Mexico, and the United States. Combined with NAFTA, these approvals help reduce compliance risk in multinational manufacturing environments while maintaining industry-standard performance in industrial switches.
Implementing the AH1203L can lower maintenance costs by reducing downtime through quick, secure lockout actions and fewer misenergizations. The compact 1.31 in depth and 3.28 in height fit crowded panels, saving panel space and labor time during installation. Combined with a 15A, 120/277V rating and durable urea body, you gain reliable performance, lower rewiring retries, and improved safety compliance.