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    Leviton 1221-2KL / 1222-2KL / 1223-2KL / 1224-2KL — Key Lock Switches Installation Instructions

    September 08, 2026 2 min read

    Installation instructions and wiring diagrams for Leviton's Key Lock Switches (single pole, double pole, 3-way, and 4-way) — 20A-120/277VAC toggle switches that require a physical key to operate.

    💾 Download Original PDF
    Full text manual (for reference)

    Installation instructions and specifications for Leviton's Key Lock Switches — a line of tamper-resistant toggle switches that require a physical key to operate, ideal for restricting access to lighting circuits, motors, or other 120/277V loads.

    Models Covered

    • Cat. No. 1221-2KL — Single Pole
    • Cat. No. 1222-2KL — Double Pole
    • Cat. No. 1223-2KL — 3-Way
    • Cat. No. 1224-2KL — 4-Way
    • Cat. No. 2KL — Replacement keys (2 per package)

    Ratings

    20A–120/277VAC · 1 Hp @ 120V, 2 Hp @ 240V

    Safety Warnings

    • To avoid fire, shock, or death: turn off power at the circuit breaker or fuse and test that power is off before wiring.
    • Install and use in accordance with appropriate electrical codes and regulations. If unsure about any part of these instructions, consult an electrician.
    • Use only with copper or copper-clad wire.
    • Do not use disinfecting sprays, foggers, or other atomized cleaning agents on the device. Do not spray liquid onto the product — clean with a damp cloth and mild soap only.

    Installation Steps

    1. Remove the existing wallplate and switch or dimmer, if applicable.
    2. Side Wire: Strip approximately 3/4" (1.9 cm) of insulation from each circuit conductor. Loop wires clockwise 3/4 turn around the terminal screws and tighten to the proper torque value (see Leviton.com/torquevalue). Side-wire terminals accept up to #12 AWG copper or copper-clad wire.
    3. Back Wire: Strip approximately 1/2" (1.3 cm) of insulation. Insert straight wire ends under the clamps next to the appropriate terminal screws and tighten to proper torque. Back-wire terminals accept up to #10 AWG copper or copper-clad wire.
    4. Mount the device into an outlet box with a minimum depth of 2-3/4" (7.0 cm) using the long mounting screws provided.
    5. Mount the wallplate and tighten the cover screws.
    6. Restore power at the circuit breaker or fuse. Installation is complete.

    Wiring Reference

    Configuration Terminals
    Single Pole 1: Line Hot (Brass) · 2: Neutral (White) · 3: Ground (Green) · 4: Load (Brass)
    Double Pole 1/2: Line Hot Circuit A/B (Black) · 3: Ground (Green) · 4/5: Load Circuit A/B (Brass)
    3-Way 1: Common Terminal (Black) · 2: Neutral (White) · 3: Ground (Green) · 4: Travelers (Brass to Brass)
    4-Way 1: Common Terminal (Black) · 2: Neutral (White) · 3: Ground (Green) · 4: Travelers between switches

    Warranty

    Limited 10-year warranty against defects in materials and workmanship under normal and proper use, from the date of purchase. Leviton's obligation is limited to repair or replacement at its option. Warranty is void if the product is installed improperly, overloaded, misused, opened, abused, or altered. Excludes labor for removal/reinstallation and incidental/consequential damages.

    Contact

    Technical Assistance: 1-800-824-3005 (USA) or 1-800-405-5320 (Canada) · www.leviton.com