Relocking device

Relocking device

A relocking device (RLD) (a.k.a. "external relocker") is an auxiliary locking device intended to be activated during an attempted burglary of a safe or vault. Such a device will keep a safe or vault locked even if the primary lock is defeated. This independent mechanism is designed to maintain the locked state of a safe even if the lock itself is destroyed. This auxiliary locking device usually consists of a spring-loaded bolt of some type, held in check by a bracket or cable that is rigged to release the mechanism in a burglary attempt. The device will either block the main boltwork from retracting or block the door from opening.

Thermal relocking devices

Designed as a defense against torch attacks, these are simply relocking devices equipped with a fusible link designed to melt and release the relocking device if the temperature inside the door exceeds a certain temperature (usually 65°C), as would happen in a torch attack.

Glass relocking devices

A glass relocking device is a piece of glass, usually tempered, placed where it might be expected to break in a burglary attack. It is attached, usually with wires, to one or more spring-loaded bolts, which are often randomly located. A drill or torch may break the glass, releasing the bolts.


* [ Glossary] — Locksoft

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Look at other dictionaries:

  • relocking device —   n.    any device intended to prevent normal opening of a safe as a result of an attack, two types are typically used, internal and external …   Locksmith dictionary

  • active relocking device —   n.    a device that places its bolts every time a safe door is closed and activation via attack prevents it from retracting its bolts …   Locksmith dictionary

  • external relocking device —   n.    a device outside the lock case that prevents the safe door from being opened after attack, two types are typically used, active and passive …   Locksmith dictionary

  • internal relocking device —   n.    a device inside a safe lock case that prevents the lock bolt from being retracted after attack …   Locksmith dictionary

  • passive relocking device —   n.    a device that places its bolts only upon attack to the safe or lock …   Locksmith dictionary

  • Relocker — A relocker is one of various mechanisms intended to keep a safe or vault locked in a burglary attempt. It is activated by common burglary methods.There are two basic classes of relockers: * Relock trigger (RLT) (a.k.a. internal relocker ), which… …   Wikipedia

  • ERD —   abb.    external relocking device …   Locksmith dictionary

  • IRD —   abb.    internal relocking device …   Locksmith dictionary

  • relock trigger —   n.    the part of a safe relocking device which causes the mechanism to activate …   Locksmith dictionary

  • RLD —   abb.    relocking device …   Locksmith dictionary

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