Lockout / Tagout

Lockout Tagout Equipment for Safe Machinery Isolation

Our Lockout / Tagout (LOTO) collection covers the equipment used to safely isolate machinery, electrical circuits, valves and stored energy sources during maintenance, servicing and inspection work. The purpose is simple: prevent the accidental re-energisation of equipment while a worker is still inside it or working on it. Lockout tagout is a legal requirement under UK and EU machinery safety regulations, with isolation procedures referenced in BS EN ISO 14118, the HSE guidance on safe isolation, and the Provision and Use of Work Equipment Regulations 1998 (PUWER). At MTN Shop UK we sell 27 products from Master Lock and ABUS Mechanical, the two most specified names in industrial LOTO.

The collection covers the full LOTO toolkit: lockout hasps for multi-worker isolation points, lockout padlocks in colour coded steel and thermoplastic with unique keys, circuit breaker lockouts (Master Lock Griptight 491B and 493B), cable lockouts for awkward isolation points, complete maintenance kits with mixed devices, plus safety signs and shackles. The Master Lock Griptight breaker lockouts cover MCBs in standard, large and miniature formats found across UK consumer units and industrial panels.

Pair this collection with the rest of our security and safety range. Browse our Master Lock and ABUS Mechanical brand pages, our padlocks, hasps, chains and cables, plus the wider locks and security category and our PPE range.

Lockout Tagout Equipment for Safe Machinery Isolation - Available in MTN Shop UK
Loading…

27 products

View

Lockout / Tagout – Product list

Lockout Tagout at MTN Shop UK

Lockout tagout (LOTO) is the procedure that keeps maintenance workers alive. Machinery that is not properly isolated can re-start unexpectedly, valves can be re-opened by a colleague at the other end of a plant, electrical circuits can be re-energised by someone unaware that a person is working downstream. LOTO equipment makes the isolation physical: a padlock that only the worker holds the key to, fitted to a hasp at the energy isolation point, blocks any attempt to re-energise the machine. Where multiple workers are on the same job, a multi-padlock hasp lets each person fit their own personal lock, and the machine cannot be re-started until every worker has individually removed theirs. In UK and EU industrial settings this procedure is the standard implementation of safe isolation under BS EN ISO 14118, HSE guidance and PUWER 1998.

Master Lock lockout hasps

Lockout hasps are the multi-padlock devices at the heart of LOTO. They fit to the isolation point (an isolator switch, a valve, a breaker) and hold up to six padlocks at once on a row of holes. Our range covers:

  • Master Lock Lockout Standard Hasp 25mm Steel Red: the classic red steel hasp with a 25mm jaw, sized for common isolation switches and valves. Holds up to six padlocks on the holes.
  • Master Lock Four Padlock Lockout Hasp with Adjustable Cable 1.8m: a cable hasp design where the jaw is replaced by a 1.8m braided steel cable, allowing isolation of equipment where a fixed jaw will not fit (multi-valve manifolds, awkward isolators, ganged switches).

Master Lock lockout padlocks

Lockout padlocks differ from security padlocks in two important ways: they are colour coded (red, yellow, blue, black, green, orange) so each department or contractor uses their own colour, and they are keyed differently with no master key, so only the worker holding the key can remove their own lock. Our range includes:

  • Master Lock Lockout Padlock with Flexible Braided Steel Cable Shackle: the standard padlock body fitted with a flexible cable shackle that threads through awkward isolation points where a rigid shackle would not reach. Useful for ganged switches, equipment racks and grouped isolators.
  • Colour coded lockout padlocks in thermoplastic and steel, available in multiple colours for departmental and contractor identification.

Master Lock Griptight circuit breaker lockouts

Circuit breaker (MCB) isolation is the most common LOTO scenario in UK industry. The Master Lock Griptight series covers the standard breaker formats found in consumer units and distribution panels:

  • Master Lock Griptight Standard Circuit Breaker Lockout (493B): fits the majority of standard width MCBs found in UK and European panels, with a thumb screw that grips the toggle in the OFF position. Accepts a padlock through the hole to lock the device in place.
  • Master Lock Griptight Large Circuit Breaker Lockout: the wider version for larger industrial breakers and unusual toggle formats.
  • Master Lock Griptight Circuit Breaker Lockout Set (491B + 493B): a two device pack covering the most common standard formats, suitable for site electricians and maintenance teams that work across multiple plant.

Master Lock General Maintenance Lockout Kit (11 piece)

The 11 piece Maintenance Kit is the right starting point for a workshop, factory or maintenance team setting up a LOTO programme. It contains a mixed set of devices covering most isolation scenarios: a multi-padlock hasp, circuit breaker lockouts, valve lockouts, padlocks and a tote bag for carrying everything to the job. Trade users add specific devices to the kit (cable lockout, pneumatic lockout, plug lockout) based on the equipment they maintain.

Choosing the right LOTO equipment

  • Single worker isolation of a standard MCB: Griptight 493B Standard Circuit Breaker Lockout + lockout padlock.
  • Multi-worker isolation of an isolator switch or valve: Master Lock 25mm Red Hasp + one padlock per worker.
  • Awkward isolation points, ganged switches, manifolds: Four Padlock Lockout Hasp with 1.8m Adjustable Cable, or Lockout Padlock with Flexible Cable Shackle.
  • Starter kit for a maintenance team: General Maintenance Lockout Kit 11 piece.
  • Site electrician day kit: Griptight Circuit Breaker Set (491B + 493B) plus 2-4 lockout padlocks.

Build your LOTO programme

The Lockout / Tagout collection works alongside the rest of our security and PPE range. Browse our Master Lock and ABUS Mechanical brand pages, our padlocks, hasps, chains and cables and the wider locks and security category. For PPE worn during isolation tasks, browse our safety gloves, safety eyewear, safety helmets and the full PPE range.

For LOTO programme rollouts across multiple sites, departmental colour coded sets or to source a specific Master Lock or ABUS reference, request a quote and our team will come back with availability.

Frequently Asked Questions

Lockout tagout is the procedure for safely isolating machinery, electrical circuits, valves and stored energy sources during maintenance, servicing and inspection. A worker physically locks the isolation point with a personal padlock and key, so the machine cannot be re-energised by anyone else until the worker has removed their own lock. In UK and EU industrial settings the procedure is the standard implementation of safe isolation under BS EN ISO 14118, HSE guidance and PUWER 1998.
The procedure of safe isolation during maintenance is required under the Provision and Use of Work Equipment Regulations 1998 (PUWER), the Health and Safety at Work etc. Act 1974, and the Electricity at Work Regulations 1989. The specific use of lockout tagout devices is the accepted industry implementation of these requirements, and is referenced in HSE guidance and BS EN ISO 14118. Employers are expected to provide LOTO equipment and training for maintenance workers.
Colour coding lets you identify at a glance which department, shift, contractor or worker has fitted a lock to an isolation point. A common convention is red for electrical, yellow for mechanical, blue for instrumentation, green for safety, with departments choosing their own combinations. The colour does not affect the security of the lock, but makes investigation faster when a machine cannot be re-energised because a lock has been left in place.
Both are circuit breaker lockouts that grip the toggle of an MCB in the OFF position and accept a padlock through the hole. The 493B is the standard width device that fits most UK and European MCBs. The 491B has a different jaw geometry suited to alternative breaker formats. The Master Lock Griptight Circuit Breaker Lockout Set bundles both, which covers the majority of breakers a site electrician or maintenance worker will encounter across multiple sites.
The 11 piece kit is a starter set for a maintenance team or workshop setting up a LOTO programme. It contains a mixed selection of the most common devices, typically including a multi-padlock hasp, circuit breaker lockouts, valve lockouts, lockout padlocks and a tote bag for carrying the kit to the job. Trade users add specific devices (cable lockout, pneumatic lockout, plug lockout) based on the equipment they maintain.
A hasp is needed when more than one worker is working on the same machine at the same time. Each worker fits their own personal padlock to one of the holes on the hasp. The hasp cannot be removed (and therefore the machine cannot be re-energised) until every padlock has been individually removed by its owner. Without a hasp, only one worker can lock out an isolation point at a time, which is acceptable for single worker tasks but inadequate for team maintenance.
A cable lockout (such as the Master Lock Four Padlock Lockout Hasp with 1.8m Adjustable Cable, or padlocks with flexible cable shackles) is used where a fixed jaw or rigid shackle will not fit the isolation point. Common examples include ganged switches, multi-valve manifolds, equipment racks where several isolators need to be locked off simultaneously, and irregular shaped levers and handles. The flexible cable threads through the points and locks back to itself.

You may also like...