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 | 5/8" | 3/8" | 2" | 1 1/8" | 1 1/2" | Single Pole | ABB, Airpax, Cutler-Hammer, Federal Pacific Electric, Fuji, General Electric, Merlin Gerin, Siemens, Square D, Thomas & Betts, Westinghouse | 1 | 9/32" | 0° to 175° | Red | Mounting Cleat | __ | 00000000 | 000000 |
| 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 | 00000 |
| 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" | 3 3/4" | 3 3/4" | 2 1/2" | Single Pole | Cutler-Hammer, General Electric, Merlin Gerin, Siemens, Square D, Westinghouse | 1 | 5/16" | 0° to 175° | Red | __ | __ | 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 |
Circuit Breaker Lockout Bars
Snap these bars into place to block circuit breaker switches from being flipped—even large, high-voltage switches. They attach to mounts on either side of your switch to physically block its movement. Secure them with a padlock. Use these lockouts to either keep equipment from starting up when it’s getting repaired or prevent critical equipment from powering down. After you’ve locked out a switch, you can still use the rest of your breaker box. These lockouts help you comply with OSHA 29 CFR 1910.147 requirements for the control of electrical circuits to prevent injuries.
For a complete lockout, you’ll need a bar and two lock mounts. You can either buy them individually or in a kit. Choose a red bar to lock out the off position; choose a green bar for the on position.
Mount lockout bar holders near your breaker box to store your lockout bars.
Lockout bar kits come with an alcohol prep pad. To ensure the mounts and lockout bars adhere to your circuit breaker housing, clean them off with the pad first. These kits cannot be sold outside the United States due to import restrictions.
Overall | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Max. Switch Wd. | Lg. | Wd. | Dp. | For Circuit Breaker Type | For Circuit Breaker Switch Type | Temp. Range, °F | Specifications Met | Each | |
Red Plastic | |||||||||
| 5 7/8" | 7 5/8" | 5/16" | 1/4" | Single Pole, Double Pole, Triple Pole, Multipole, Tie-Bar Multipole | No Hole, Through Hole | 0° to 250° | OSHA Compliant 29 CFR 1910.147 | 0000000 | 00000 |
Green Plastic | |||||||||
| 5 7/8" | 7 5/8" | 5/16" | 1/4" | Single Pole, Double Pole, Triple Pole, Multipole, Tie-Bar Multipole | No Hole, Through Hole | 0° to 250° | OSHA Compliant 29 CFR 1910.147 | 0000000 | 0000 |
Lock Mount | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Lg. | For Circuit Breaker Type | For Circuit Breaker Switch Type | For Max. No. of Padlocks | For Max. Padlock Shackle Dia. | Lg. | Wd. | Dp. | Mount Type | Temp. Range, °F | Specifications Met | Pkg. Qty. | Pkg. | |
Yellow Plastic | |||||||||||||
| 4" | Single Pole, Double Pole, Triple Pole, Multipole, Tie-Bar Multipole | No Hole, Through Hole | 7 | 5/16" | 4" | 13/16" | 11/16" | Adhesive Back | 0° to 250° | OSHA Compliant 29 CFR 1910.147 | 2 | 0000000 | 000000 |
Overall | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Dp. | For Circuit Breaker Type | For Circuit Breaker Switch Type | Mount Type | Temp. Range, °F | Specifications Met | Each | |
Yellow Plastic | |||||||||
| 4" | 13/16" | 3/4" | Single Pole, Double Pole, Triple Pole, Multipole, Tie-Bar Multipole | No Hole, Through Hole | Adhesive Back | 0° to 250° | OSHA Compliant 29 CFR 1910.147 | 0000000 | 00000 |
Lock Mount | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Max. Switch Wd. | Overall Lg. | For Circuit Breaker Type | For Circuit Breaker Switch Type | For Max. No. of Padlocks | For Max. Padlock Shackle Dia. | Lg. | Wd. | Dp. | Type | Temp. Range, °F | Includes | Specifications Met | Cannot Be Sold To | Each | |
Plastic | |||||||||||||||
| 5 7/8" | 7 5/8" | Single Pole, Double Pole, Triple Pole, Multipole, Tie-Bar Multipole | No Hole, Through Hole | 7 | 5/16" | 4" | 13/16" | 11/16" | Adhesive Back | 0° to 250° | One Red Lockout Bar, One Green Lockout Bar, Two Lock Mounts, Alcohol Prep Pad | OSHA Compliant 29 CFR 1910.147 | Outside United States | 0000000 | 000000 |
Tie-Bar DIN-Rail Mount Circuit Breaker Lockouts
Lock out multiple breaker switches from a single point—these lockouts wrap around an entire tie bar on your DIN-rail-mount circuit breaker so it won’t budge. Compared to pin-in and pin-out lockouts, they’re more secure. They lock with a padlock to keep circuits closed during maintenance. Less disruptive than locking out an entire enclosure, they lock out one tie bar. You can’t use them on single-pole switches. These lockouts help you comply with OSHA 29 CFR 1910.147 requirements for the control of electrical circuits to prevent injuries.
For technical drawings and 3-D models, click on a part number.
Overall | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Dp. | For Circuit Breaker Type | For Circuit Breaker Switch Type | For Manufacturer | For Max. No. of Padlocks | For Max. Padlock Shackle Dia. | Color | Specifications Met | Each | |
Plastic | |||||||||||
| 2 1/2" | 1 1/4" | 15/16" | Tie-Bar Multipole | Through Hole, No Hole | Merlin Gerin, Siemens | 1 | 9/32" | Red | OSHA Compliant 29 CFR 1910.147 | 0000000 | 000000 |
Pin-Out DIN-Rail Mount Circuit Breaker Lockouts
With pins that stick into the holes inside your switch housing, these lockouts are more secure than clamp-on lockouts. They’ll secure tie bars, too—attach them to just one of the switches to lock out the whole thing. Lock them with a padlock to prevent accidental flips during maintenance. These lockouts help you comply with OSHA 29 CFR 1910.147 requirements for the control of electrical circuits to prevent injuries.
For technical drawings and 3-D models, click on a part number.
Overall | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Switch Inside Wd. | Lg. | Wd. | Dp. | For Circuit Breaker Type | For Circuit Breaker Switch Type | For Manufacturer | For Max. No. of Padlocks | For Max. Padlock Shackle Dia. | Color | Specifications Met | Each | |
Plastic | ||||||||||||
| 3/8" | 1 3/4" | 15/16" | 15/16" | Single Pole, Tie-Bar Multipole | Through Hole | ABB, Allen Bradley, Buschmat, Clipsal, E-T-A, FAZ, Hager, Kapp, Legrand, Merlin Gerin, Proteus, Wylex | 1 | 9/32" | Red | OSHA Compliant 29 CFR 1910.147 | 0000000 | 000000 |
| 3/4" | 1 3/4" | 15/16" | 15/16" | Single Pole, Tie-Bar Multipole | Through Hole | Merlin Gerin, Siemens | 1 | 9/32" | Red | OSHA Compliant 29 CFR 1910.147 | 0000000 | 00000 |