GLOSSARY

Trapped Key Interlocking

Trapped key interlocking, or a trap key system, uses a key that must be removed to cut power and then used to open a guard, preventing the machine restarting while the key is out.

Other Terms

Isolator Switch

An isolator switch is a compliant on-off device, correctly coloured and lockable, that lets maintenance teams safely de-energise a machine before servicing.

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UK(NI) Indication

The UK(NI) indication is a marking that must sit alongside CE marking where a UK notified body has carried out conformity assessment for the Northern Ireland market.

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