Electrical Lockout

Electrical Lockout Device Selection — Quick Reference (AS/NZS 4836)

Electrical lockout devices from BRADY + MASTER LOCK + MAYO HARDWARE — switch + breaker + plug + cable lockouts for ELECTRICAL ISOLATION per AS/NZS 4836 LOTO. Maintenance + service + repair electrical equipment safely.

Compliance: AS/NZS 4836 + WHS Reg 200 mandate LOTO. Live electrical work requires LICENSED ELECTRICIAN. Test isolation BEFORE work — verify lockout effective with voltage tester. Brands: Brady, Master Lock. Companion: lockout-tagout, lockout kits, LOTO guide.

Electrical Lockout Devices from Brady, Master Lock and Mayo Hardware

AIMS Industrial stocks electrical lockout devices from Brady & Master Lock and — circuit breaker lockouts, electrical plug lockouts, MCB lockouts, isolation locks and lockout tagout (LOTO) devices for isolating electrical energy sources during planned maintenance, equipment servicing and repair work in industrial, commercial and mining facilities.

Brands in This Range

• Brady: Brady is a global leader in industrial identification and safety solutions. Brady electrical lockout devices are designed to comply with AS/NZS 4024 and international LOTO standards, providing durable, high-visibility isolation for electrical switchboards, MCBs and plug sockets.
• Master Lock: Master Lock is a world-leading manufacturer of safety padlocks and lockout devices. Master Lock electrical lockout products include plug lockouts, MCB lockouts and circuit breaker lockout clamps for energy isolation in maintenance and shutdown operations.

Electrical Lockout Device Types

• Circuit Breaker and MCB Lockouts: Clamp-style lockout devices that fit over standard miniature circuit breakers (MCBs) and moulded case circuit breakers (MCCBs) in electrical switchboards to prevent the breaker from being switched back on during maintenance. Available in sizes to suit common DIN-rail MCB widths from major switchboard manufacturers.
• Electrical Plug Lockouts: Locking covers for 240V, 415V and industrial plug sockets that prevent equipment being plugged in or an existing plug from being withdrawn during isolation. Used where portable equipment or machinery is isolated by removing the plug from the socket rather than by operating a circuit breaker.
• Isolation Padlocks: Dedicated safety padlocks designed for use with lockout devices and hasps in LOTO procedures. Safety lockout padlocks are colour-coded and keyed-alike or keyed-different to support group isolation procedures where multiple trades are working on isolated equipment simultaneously.

LOTO Compliance: Electrical lockout tagout procedures are required under Australian workplace health and safety regulations wherever hazardous energy sources are present. Correctly applied LOTO prevents the unexpected energisation, start-up or release of stored energy that could injure workers during maintenance.

Expert Support: Need help buying the right product for your application? Contact our team for application-specific advice or request a quote.

Australian Business, Local Supply: As a proudly Australian business since 1988, we supply workplace safety and lockout tagout equipment from trusted brands to trade and industrial customers across Australia.

Also see our lockout kits, safety padlocks, safety signs & labels and valve lockouts for complementary LOTO products.

People Also Ask — Electrical Lockout

Q: What's electrical lockout?

Electrical lockout is the procedure for isolating electrical equipment before maintenance — disconnecting power, locking out the disconnect, tagging with worker information per AS/NZS 4836. Critical safety: prevents accidental startup that could electrocute workers. Standard equipment: circuit breaker lockouts (clamp over the breaker handle), plug lockouts (encapsulate the plug), control panel lockouts (lockable enclosures), and lockable disconnect padlocks. Combined with LOTO procedures (lockout + tagout + verification) for safe electrical work.

Q: What lockout devices does AIMS stock?

Circuit breaker lockouts (universal and breaker-specific designs for single-pole, multi-pole breakers), plug lockouts (single phase 240V, three phase, industrial sockets), three-phase switch lockouts, control panel lockouts (lockable cabinet covers), multi-lock hasps (allow multiple workers to lock same isolation), personal LOTO padlocks (key-retaining design per AS/NZS 4836), and warning tags. Brand mix includes Brady, Master Lock, and AIMS-stocked LOTO equipment. See [Lockout Tagout Guide](/blogs/product-guides/lockout-tagout-guide).

Q: How do I lock out a circuit breaker?

1. Turn off the breaker normally. 2. Apply the appropriate breaker lockout device (universal clamp for general breakers, breaker-specific lockout for branded panels). 3. Lock the device with your personal LOTO padlock. 4. Apply warning tag with your name + date + reason. 5. Verify zero energy state (test that downstream equipment is dead with multimeter). 6. Perform the work. 7. Remove lock and tag only after work complete and you're the same worker who applied them.

Q: Can I use a regular padlock for electrical lockout?

No — must use personal LOTO padlock (key-retaining design per AS/NZS 4836). Personal LOTO padlock: key cannot be removed until lock is open (prevents accidental locking), one key per worker, colour-coded for personnel identification. Standard security padlock with regular keying doesn't meet the safety design requirement. AS/NZS 4836 requires personal LOTO padlocks specifically for personnel-isolating lockout — using wrong padlocks is a compliance breach.

Q: What if multiple workers need to lock the same isolation?

Use a multi-lock hasp — accepts multiple personal padlocks. Each worker applies their personal padlock to the hasp; the equipment can only be restored when ALL workers remove their padlocks. Standard practice for maintenance crews where multiple trades work on the same equipment. The lead worker locks initially with multi-lock hasp; joining workers add personal padlocks before starting their work. AIMS stocks multi-lock hasps in various capacities.