Clamp-On Circuit Breaker Lockouts
A lockout for every style of circuit breaker switch—these lockouts clamp over your switch, so it doesn’t matter if it has a through hole. Secure these lockouts with a padlock. Less disruptive than locking access to an entire panel, they isolate a single circuit or group of circuits. These lockouts help you comply with OSHA 29 CFR 1910.147 requirements for the control of electrical circuits to prevent injuries.
Single-pole lockouts secure a single switch. Tie-bar multipole lockouts are wider than single-pole lockouts to fit onto most tie bars, which control multiple circuits.
Use mounting cleats for switches with a recess that’s too large for your lockout. To prevent accidental flipping when locked out, attach the cleat to your lockout and it will wedge into your switch’s recess.
Lockouts with a cable tie slot let you apply tags directly to the lockout instead of attaching them to a padlock. To secure multiple lockouts with one tag, run one cable tie through adjacent lockouts. These lockouts won’t open until the padlock is removed and your cable tie is cut. There are slots for up to three ties for group lockouts.
Style A have a two-piece design that’s easy to install—no tools or tightening required. Place one piece over the switch and slide on the second piece to mount.
For Max. Switch | Overall | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Voltage  | Wd. | Thick. | Lg. | Wd. | Dp. | For Circuit Breaker Type | For Manufacturer | For Max. No. of Padlocks | For Max. Padlock Shackle Dia. | Temp. Range, °F | Color | Each | |
Plastic | |||||||||||||
| 120V AC | 5/8" | 3/8" | 1 1/16" | 2 1/4" | 13/16" | Single Pole | American Circuit Breakers, Cutler-Hammer, GE, Merlin Gerin, Siemens, Square D | 1 | 9/32" | 0° to 250° | Red | 000000000 | 00000 |
Style B have a compact profile for breaker boxes with tight clearance. Use a flat-head screwdriver to tighten them onto your switch. These lockouts have a warning label on the front for visibility. Made of 100% recycled materials, they’re rated UL 2809-2 to meet purchasing requirements in LEED-certified facilities.
For Max. Switch | Overall | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Voltage | Wd. | Thick. | Lg. | Wd. | Dp. | For Circuit Breaker Type | For Manufacturer | For Max. No. of Padlocks | For Max. Padlock Shackle Dia. | Temp. Range, °F | Color | Message | Each | |
Plastic | ||||||||||||||
| 120V AC 240V AC | 5/8" | 7/16" | 1" | 3/4" | 2" | Single Pole | American Circuit Breakers, Cutler-Hammer, GE, Merlin Gerin, Siemens, Square D | 1 | 9/32" | -40° to 250° | Red | Danger—Locked Out—Do Not Operate | 000000000 | 000000 |
| 120V AC 277V AC | 5/8" | 7/16" | 1" | 1 5/8" | 2" | Tie-Bar Multipole | American Circuit Breakers, Cutler-Hammer, GE, Merlin Gerin, Siemens, Square D | 1 | 9/32" | -40° to 250° | Red | Danger—Locked Out—Do Not Operate | 000000000 | 00000 |
Style C have a large plastic knob that’s easy to tighten, even if you’re wearing gloves.
For Max. Switch | Overall | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Voltage | Wd. | Thick. | Lg. | Wd. | Dp. | For Circuit Breaker Type | For Manufacturer | For Max. No. of Padlocks | For Max. Padlock Shackle Dia. | Temp. Range, °F | Color | Includes | Features | Each | |
Plastic | |||||||||||||||
| 120V AC 277V AC | 2 5/8" | __ | 1 3/8" | 1 1/16" | 1 1/4" | Single Pole | ABB, Airpax, American Circuit Breakers, American Switch, Bryant, Challenger, Cutler-Hammer, Federal Pacific Electric, Fuji, GE, Heinemann, Lemag, Merlin Gerin, Siemens, Square D, Thomas & Betts | 1 | 9/32" | -40° to 230° | Red | Cable Ties, Mounting Cleat | Cable Tie Slot | 000000000 | 000000 |
| 480V AC 600V AC | 1 1/2" | 1/2" | 2 3/4" | 2 5/16" | 2" | Single Pole | ABB, American Circuit Breakers, Challenger, Cutler-Hammer, Federal Pacific Electric, General Electric, Merlin Gerin, Siemens, Square D, Westinghouse | 1 | 9/32" | 0° to 175° | Red | Mounting Cleat | __ | 00000000 | 00000 |
| 480V AC 600V AC | 2 1/4" | 7/8" | 4 1/8" | 3 3/4" | 2 3/8" | Single Pole | American Circuit Breakers, Cutler-Hammer, GE, Merlin Gerin, Siemens, Square D, Westinghouse | 1 | 9/32" | 0° to 175° | Red | Cable Ties | Cable Tie Slot | 000000000 | 00000 |
| 480V AC 600V AC | 3 3/4" | __ | 1 7/8" | 2 3/16" | 3 3/16" | Single Pole | ABB, American Circuit Breakers, Challenger, Cutler-Hammer, GE, Merlin Gerin, Siemens, Square D, Westinghouse | 1 | 9/32" | 0° to 175° | Red | Cable Ties, Mounting Cleat | Cable Tie Slot | 000000000 | 00000 |