3R47

Purpose

The 3R47 was introduced, at the request of the Home Office Prison Department, with the original intention of providing secure locking of cell doors in Crown, Prison and Magistrates Courts, by means of a lock that is essentially different to those used in UK prisons. In practice, however, it is being used increasingly as a prison cell lock.

Overview

The latchbolt provides an overall throw of 20mm.

The lock offers a number of keying and handle configurations to suit a variety of operational requirements and is fitted with an external visual indicator.

Single Locking Action -Keyed to pass or to differ. Locking is achieved by inserting the key into the keyhole and rotating fully. This action will both deadlock the latchbolt and lock the handle in position.

Unlocking is achieved by inserting a key into the keyhole and rotating fully. This action will release the latchbolt and unlock the handle.
The latchbolt is then withdrawn using the handle.

Double locking action

Servant Key – Operates single locking action only Locking / Unlocking as above.

Note: the Servant key will not operate the double (master) locking action.

Master Key – Operates double locking action.

Locking - providing the servant key has been used to operate the first locking action, the master key can be utilised. By inserting the master
key into the keyhole and rotating fully over-locking will be achieved. The servant key will be disabled and unauthorised use of the servant
key will be prevented.

Unlocking is achieved by inserting the master key into the keyhole and rotating fully, this action will remove the over-locking enabling
operation of the servant key.

Note: the lock can be configured to operate the double locking action only or if required to operate both single and double locking actions
from a single key.

Features

Carbon steel latchbolt, with carbide anti-cutting rollers and 20mm throw.
7 lever highly durable mechanism.
Configurable to three key options – Single Action, Double Action or Master-Keyed
Dedicated key profile operates 3R47 range of locks only.
Tamper resistant Aluminium fascia plate with status indicator.
Security fixings to prevent unauthorised removal.

Performance

Lock tested to a minimum of 100,000 key operations.
Handle operation tested to 300,000 operations.
Latch action tested to 150,000 operations.
Saw attack 30 minutes.
End load 13.5KN.
Side Load 13.5KN.
Salt Spray 500 hours BS EN 1670:1998.

Additional features

Optional inner handle available on request.
Suitable for internal use only.
Available in alternative furniture finishes on request.
Gate boxes for steel door applications recommended.

Dimensions and Weights

Lockcase Depth 171.5mm
Lockcase Length 14.3mm
Lockcase Width 21.0mm

Weight (lock only) 3.0Kg

Total Range

The lock is available in left or right hand variants for opening in or opening out doors and can be fitted to steel or wooden doors. For applications requiring cell side furniture a range of options are available on request.

Lock is suitable for use on all door types, however on steel doors the short forend version should be ordered and for wooden doors the long forend version is recommended.

Fully dimensioned customer drawings are available on request to assist with door preparation.