Leviton 1221-PLG 20A Single-Po...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$129.63
$93.56
Leviton 1221-PLG 20 Amp, 120 Volt, Toggle Pilot Light - Illuminated ON - Req. Neutral Single-Pole AC Quiet Switch, Industrial Grade, Self Grounding, Back & Side Wired, - Green

Leviton 1221-PLG 20A Single-Pole Illuminated Toggle Switch, Green

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Model: 1221-PLG

In Stock (leaves warehouse same day if ordered before 3pm ET)

$129.63
$93.56
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Leviton 1221-PLG 20A Single-Pole Illuminated Toggle Switch, Green

Leviton's 1221-PLG is a 20 Amp, 120 Volt single-pole AC quiet toggle switch with an illuminated ON pilot light (requires a neutral connection), built to Extra Heavy-Duty Industrial Specification Grade standards. This Green toggle switch is self-grounding and accepts back or side wire termination, making it a dependable choice for demanding commercial and industrial circuits.

Key Features

  • Electrical Rating: 20 Amp, 120 Volt single-pole AC quiet switch for reliable circuit control.
  • Illuminated Pilot Light: Toggle glows ON to indicate an energized circuit; requires a neutral wire connection.
  • Industrial Grade: Extra Heavy-Duty Industrial Specification Grade construction rated for 50,000 cycles minimum endurance.
  • Self-Grounding: Self-grounding design with brass ground clips and a brass 8-32 grounding screw for code-compliant installation.
  • Flexible Termination: Back or side wire termination accepts 14-#10 AWG (back wired) or #14-#12 AWG (side wired) conductors.
  • Contact Material: Silver alloy contacts deliver dependable switching performance.
  • Durable Construction: Thermoplastic body, base, and cover with a polycarbonate toggle and actuator, rated V-2 flammability per UL 94.
  • Finish: Green toggle for clear circuit identification.

Certifications & Compliance

  • UL 20 Listed
  • UL Fed Spec WS896E, File #E7458
  • CSA C22.2 No. 111, File #152105
  • NEMA WD-1 & WD-6
  • ANSI C-73
  • RoHS Compliant

Technical Specifications

  • Device Type: Toggle Switch
  • Product Voltage: 120 VAC
  • Hp Rating: 1HP-120V
  • Grade: Extra Heavy-Duty Industrial Specification Grade
  • Grounding: Self-Grounding
  • Termination: Back or Side Wire
  • Terminal Accom: 14-#10 AWG back wired; #14-#12 AWG side wired
  • Terminal Id: Brass-Hot Black-Hot White-Neutral Green-Gnd
  • Terminal Screws: Brass 8-32
  • Torque Range: 12-14 inch pounds
  • Contact Material: Silver Alloy
  • Actuator Material: Polycarbonate
  • Toggle: Polycarbonate
  • Base Material: Thermoplastic
  • Body Material: Thermoplastic
  • Cover Material: Thermoplastic
  • Strap Material: Steel
  • Ground Clips: Brass
  • Grounding Screw: Brass 8-32
  • Dielectric Voltage: Withstands 1500V for 1 minute
  • Temperature Rise: Maximum 30 degrees C rise
  • Operating Temperature: -40°C to 65°C
  • Endurance: 50,000 cycles minimum
  • Overload Ul20 Test: 100 cycles of OL at 4.8 times rated current
  • Flammability: Rated V-2 per UL 94
  • Ul Standard: UL 20
  • Ul Fed Spec Ws896e: File #E7458
  • Csa C22 2 No 111: File #152105
  • Nema: WD-1 & WD-6
  • Ansi: C-73
  • Rohs: Compliant
  • Nom: 57
  • Product Id: Ratings are permanently marked on device

Typical Applications

  • Commercial and Industrial Lighting Control
  • Panelboard and Equipment Room Circuits
  • Pilot Light Indication for Motors and Equipment
  • Industrial and Institutional Facilities
  • Renovation and New Construction Wiring

Why Leviton?

Leviton backs the 1221-PLG with Extra Heavy-Duty Industrial Specification Grade construction, silver alloy contacts, and a self-grounding design built for dependable, code-compliant performance. UL 20 listed and CSA certified, this switch is engineered to withstand demanding industrial duty cycles in commercial and industrial facilities.

Manufacturer Resources

Product Specs

Actuator Material:
Polycarbonate
Base Material:
Thermoplastic
Body Material:
Thermoplastic
Contact Material:
Silver Alloy
Cover Material:
Thermoplastic
Csa C22 2 No 111:
File #152105
Device Type:
Toggle Switch
Dielectric Voltage:
Withstands 1500V for 1 minute
Ground Clips:
Brass
Grounding Screw:
Brass 8-32
Hp Rating:
1HP-120V
Operating Temperature:
-40°C to 65°C
Overload Ul20 Test:
100 cycles of OL at 4.8 times rated current
Product Id:
Ratings are permanently marked on device
Strap Material:
Steel
Temperature Rise:
Maximum 30 degrees C rise
Terminal Accom:
14-#10 AWG back wired; #14-#12 AWG side wired
Terminal Id:
Brass-Hot Black-Hot White-Neutral Green-Gnd
Terminal Screws:
Brass 8-32
Torque Range:
12-14 inch pounds
Ul Fed Spec Ws896e:
File #E7458
Ul Standard:
UL 20
Product Group:
Wiring Devices
Department:
Electrical
Product Subgroup:
Switches
Amperage Rating:
20 A
Ansi:
C-73
Endurance:
50,000 cycles minimum
Flammability:
Rated V-2 per UL 94
Grade:
Extra Heavy-Duty Industrial Specification Grade
Grounding:
Self-Grounding
Nema:
WD-1 & WD-6
Nom:
57
Rohs:
Compliant
Termination:
Back or Side Wire
Toggle:
Polycarbonate
Product Voltage:
120 VAC
Product Function:
Single-Pole
Product Color:
Green
Product Type:
Toggle Switch

Leviton 1221-PLG – Frequently Asked Questions

1) Does the Leviton 1221-PLG pilot light switch need a neutral wire in the box?
Yes. The 1221-PLG's toggle illuminates when the circuit is ON, and that pilot lamp is powered from a neutral, so the box has to have a neutral available. The terminal identification spells it out: brass for hot, black for hot, white for neutral, green for ground. In an older box with only a switch leg and no neutral pulled, this device will not work as intended and you want a plain 20A single-pole toggle instead.
2) What wire sizes can I land on the Leviton 1221-PLG, and what torque do the screws take?
Back wired, the device accepts #14 through #10 AWG; side wired it takes #14 to #12 AWG. Terminal screws are brass 8-32 and the torque range is 12 to 14 inch pounds. If you are running #10 for a long 20A home run, you have to use the back wire clamps, not the side screws.
3) Can I use the Leviton 1221-PLG to switch a motor?
It carries a 1HP at 120V horsepower rating, so it will handle a motor load up to 1 horsepower on 120 volts, along with the 20A general rating. The illuminated toggle also gives you a visual that the equipment circuit is energized, which is why these get used on exhaust fans, pumps and shop equipment where the motor is out of sight.
4) What should I use instead of the Leviton 1221-PLG if the light is controlled from two locations?
The 1221-PLG is a single-pole switch, so it controls a load from one location only. For three-way control, the Eaton Arrow Hart AH-1223GY is an industrial grade three-way toggle switch rated 20A, 120/277V. Note the Arrow Hart three-way does not carry the illuminated ON pilot toggle that the 1221-PLG uses to indicate an energized circuit.
5) What is the closest industrial-grade alternative to the Leviton 1221-PLG for a 20A single-pole switch?
The Pass & Seymour PS20AC3W is an industrial extra heavy duty specification grade 20A toggle switch, matching the 1221-PLG's Extra Heavy-Duty Industrial Specification Grade rating and 20 A amperage. The key difference is the pilot light: the Leviton 1221-PLG has an illuminated ON toggle that requires a neutral connection, while the PS20AC3W is a plain white toggle with no indicator. If the neutral is not available at the box, the PS20AC3W is the one to use.
6) Can I substitute a Bryant 4801W for a Leviton 1221-PLG?
No, the ratings do not line up. The Bryant 4801W is a 4-Series single-pole 15A 277V AC toggle switch in white, while the Leviton 1221-PLG is rated 20 A at 120 VAC with a 1HP-120V motor rating. On a 20A branch circuit, or where the pilot light indication of the 1221-PLG is required, the 4801W is not an equivalent device.
7) Which of these toggle switches works on a 277V lighting circuit?
The Leviton 1221-PLG is a 120 VAC device and should not be used on 277V. The Eaton Arrow Hart AH-1223GY is rated 20A, 120/277V, and the Bryant 4801W is rated 15A 277V AC, so both cover 277V lighting circuits. Choose by pole configuration and amperage: the Arrow Hart is three-way at 20A, the Bryant is single-pole at 15A.
8) Do I still need to run a ground pigtail to the Leviton 1221-PLG switch?
The 1221-PLG is self-grounding through brass ground clips on the mounting strap, so in a properly grounded metal box the yoke grounds through the mounting screws. A brass 8-32 grounding screw is provided if you want to or are required to bond directly with a conductor, which is the case in a nonmetallic box.
9) Will the green Leviton 1221-PLG match the white or ivory switches already on my other walls?
No, it won't. The 1221-PLG has a green toggle, used deliberately to flag a specific circuit rather than to blend in. If you are matching a run of standard-color devices, look at a white or ivory 20A spec grade toggle instead, such as the Pass & Seymour PS20AC3W in white or the CS20AC3I in ivory. Note that neither of those is a pilot light device, so you lose the ON indication.
10) Is there a lighter-duty 20A spec grade toggle switch instead of the Leviton 1221-PLG?
The Pass & Seymour CS20AC3I is a commercial 20A specification grade toggle switch in ivory. The Leviton 1221-PLG is built to Extra Heavy-Duty Industrial Specification Grade with a 50,000 cycle minimum endurance rating and silver alloy contacts, so the CS20AC3I sits at the commercial spec grade tier rather than the industrial tier. For an office or light commercial lighting circuit that does not need pilot light indication, the CS20AC3I covers the same 20A duty.
11) How do the Pass & Seymour TradeMaster toggle switches compare to the Leviton 1221-PLG?
The Pass & Seymour 660G and 663LAG are TradeMaster grounding toggle switches in brown satin thermoplastic and light almond thermoplastic respectively. Both are grounding devices like the 1221-PLG, which is self-grounding with brass ground clips and a brass 8-32 grounding screw. The Leviton is built to Extra Heavy-Duty Industrial Specification Grade with silver alloy contacts and a green illuminated toggle for circuit identification, so the TradeMaster pair is the choice where a standard residential-color device is wanted rather than industrial pilot indication.
12) Can the Leviton 1221-PLG be installed in an unheated warehouse or a cold storage vestibule?
Operating temperature runs from -40C to 65C, so unheated warehouses, loading docks and mechanical penthouses are within range. Temperature rise is held to a maximum of 30 degrees C, and the device withstands 1500V dielectric for one minute.
13) What is the Leviton 1221-PLG made of, and does it meet RoHS?
Body, base and cover are thermoplastic, the toggle and actuator are polycarbonate, the strap is steel and the ground clips and 8-32 screws are brass. Flammability is rated V-2 per UL 94, and the device is RoHS compliant. Ratings are permanently marked on the device itself, which matters for inspection and for facilities that audit installed hardware.
How fast can I get the Leviton 1221-PLG delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Leviton 1221-PLG come with a warranty?
Absolutely. The Leviton 1221-PLG is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Leviton 1221-PLG?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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