CATU CLIPBLOCK Compact Circuit Breaker Lockout

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A circuit breaker lockout is a safety device designed to prevent the accidental or unauthorized re-energizing of an electrical circuit during maintenance or repair. This device is a critical component of lockout/tagout (LOTO) procedures, which are safety protocols mandated by the Occupational Safety and Health Administration (OSHA) in the United States and similar regulations globally to ensure worker safety around electrical systems.

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SKU Pack Size Dimensions (mm) Hole Diameter (Ø) mm Padlock Supplied and Key Weight
Thumbnail AL2011 5 40 x 40 x 15 6 No 158
Thumbnail AL201C1 Each 40 x 40 x 15 6 Yes 60


  • Compatible with a large majority of brands of modulars, circuit breakers, switches, differentials.
  • Quick fixing with a flat screwdriver n° 3, design allowing repetitive tightening and loosening.
  • Padlockable with a mini padlock hole Ø 6 mm. 

Key features and aspects of a circuit breaker lockout include:

  1. Compatibility: Circuit breaker lockouts come in various shapes and sizes to fit different types of circuit breakers, including single and multi-pole breakers. It's important to choose a lockout device that is compatible with the specific make and model of the circuit breaker it will be used on.

  2. Material: These devices are typically made from durable, non-conductive materials such as nylon or reinforced plastic to withstand harsh environments and prevent electrical conduction.

  3. Operation: A circuit breaker lockout device usually works by clamping onto the breaker switch in the "off" position, preventing it from being moved to the "on" position. Once the lockout device is in place, a padlock or similar locking mechanism can be used to secure the device, ensuring that only authorized individuals can remove it and re-energize the circuit.

  4. Visibility: Many circuit breaker lockouts are designed with bright colors to enhance visibility. This feature helps ensure that the lockout is clearly visible to all workers, reducing the risk of accidental re-energization.

  5. Compliance: Using circuit breaker lockouts is part of complying with OSHA's standard for the control of hazardous energy (29 CFR 1910.147), which requires employers to establish a program and utilize practices and procedures to disable machinery or equipment, thereby preventing the release of hazardous energy while employees perform servicing and maintenance activities.

Circuit breaker lockouts are an essential safety tool for electricians, maintenance workers, and anyone involved in servicing or maintaining electrical equipment. They play a vital role in preventing accidents, including electrical shocks, burns, and other serious injuries, by ensuring that electrical circuits remain de-energized and cannot be turned back on inadvertently during maintenance or repair work.

    • Weight
      158 g
    • SKU
    • EAN
    • HS Commodity Codes
  • Manufacturer
    CATU SAS is a subsidiary of the SICAME Group
  • Country of Origin
  • Pack Size
    5, Each
  • Dimensions (mm)
    40 x 40 x 15, Not Applicable
  • Hole Diameter (Ø) mm
    6, Not Applicable