Circuit Breaker Lockout Devices

There are hundreds of different circuit breakers found throughout the world each being a different size and shape. Before beginning maintenance these circuit breakers need to be isolated and locked and tagged out to ensure they cannot be accidentally reactivated while maintenance work is being undertaken.

The SafeSite Program by Mayo Hardware includes a broad range of Master Lock circuit breaker lockout devices. Circuit breaker lockout devices are constructed from durable materials effectively locking out circuit breakers.

At times it can be a challenge to locate the correct circuit breaker lockout device. Master Lock’s range of lockout kits ensures you always have the right circuit breaker lockout device to perform the job.For more information on circuit breaker lockout devices, contact Mayo Hardware on 1300 360 211

Miniature Circuit Breaker Lockout (Standard Toggles)

  • Lockout out most miniature ISO/DIN circuit breakers throughout the world
  • Fits breakers with toggle openings 11mm or less
  • Works with all Master Lock safety padlocks and hasps
  • No tools required
  • Part No: S2390

Miniature Circuit Breaker Lockout (Wide Toggles)

  • Lockout out most miniature ISO/DIN circuit breakers throughout the world
  • Fits breakers with toggle openings 11mm to 13mm
  • Works with all Master Lock safety padlocks and hasps
  • No tools required
  • Part No: S2391

Miniature Circuit Breaker Lockout (Pins Inward)

  • Lockout out most miniature ISO/DIN circuit breakers throughout the world
  • Fits breakers with openings up to 12.7mm between lockout holes
  • Works with all Master Lock safety padlocks and hasps
  • No tools required
  • Part No: S2392

Miniature Circuit Breaker Lockout (Standard Toggles)

  • Lockout out most miniature ISO/DIN circuit breakers throughout the world
  • Fits on breakers toggle and can be tightened using a screwdriver
  • Works with all Master Lock safety padlocks and hasps
  • Part No: 2393

Universal Miniature Circuit Breaker Lockout (Tool Free)

  • Thumb turn dial screw for easy attachment – no tools required
  • Dial is inaccessible in the locked position to prevent removal
  • Padlock can be applied horizontally or vertically
  • Can be mounted side-by-side on adjacent miniature circuit breakers
  • Durable thermoplastic material is chemical resistant and performs effectively in extreme environments
  • Part No: S2394

Grip Tight Plus Circuit Breaker Lockout (120/240V)

  • Large thumbscrew with knurled texture enables gripping with gloves, and is slotted to allow optional screwdriver adjustment
  • Toothed jaw delivers a tight hold on the circuit breaker handle
  • Compact size allows for locking out adjacent breakers
  • Suitable for locking out multi-pole breakers and works with tie-bar toggles
  • Part No: S3821

Grip Tight Plus Circuit Breaker Lockout (480/600V)

  • Large thumbscrew with knurled texture enables gripping with gloves, and is slotted to allow optional screwdriver adjustment
  • Permanently fixed cleat adds physical blocking capability
  • Suitable for use on molded case circuit breakers
  • Part No: S3822

Grip Tight Plus Circuit Breaker Lockout (480/600V)

  • Large thumbscrew with knurled texture enables gripping with gloves, and is slotted to allow optional screwdriver adjustment
  • Curved blade ensures two-point contact with the switch handle for greater hold
  • Fold-down cleat provides enhanced switch throw blocking when needed
  • Suitable for use on over-sized handle circuit breakers
  • Part No: S3823

Grip Tight Circuit Breaker Lockout

  • Fits wide or tall breaker toggles typically found on hi-voltage/hi-amperage breakers
  • Adjust to breaker with simple thumb turn and then close clamping handle for a tight grip on the toggle
  • Durable construction with powder coated steel and reinforced polymer for operation in harsh environments
  • Works with all Master Lock safety padlocks and hasps
  • Part No: 0491B

Grip Tight Circuit Breaker Lockout

  • Fits standard height and tie-bar toggles typically found on 120 and 240 volt breakers
  • Adjust to breaker with simple thumb turn and then close clamping handle for a tight grip on the toggle
  • Durable construction with powder coated steel and reinforced polymer for operation in harsh environments
  • Works with all Master Lock safety padlocks and hasps
  • Part No: 0493B

Grip Tight Circuit Breaker Lockout

  • Includes one 0491B and one 0493B Grip TightTM circuit breaker lockouts
  • Adjust to breaker with simple thumb turn and then close clamping handle for a tight grip on the toggle
  • Durable construction with powder coated steel and reinforced polymer for operation in harsh environments
  • Works with all Master Lock safety padlocks and hasps
  • Part No: 0506

Circuit Breaker Compact Padlock

  • 4.7mm diameter cable shackle allows padlock to properly lock all types of circuit breakers lockout devices
  • Flexible cable allows the compact lock body to be positioned so most panel doors can be closed
  • Fits the tight space constraints within circuit breaker shutoff boxes
  • 2.8cm wide, 1.9cm deep steel body, 12.7cm flexible steel cable
  • Part No: 0007C5RED