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Standards & Legislations >Cylinders

Standards and Certification

BS EN1303 Cylinders for locks

Digit 1- Category of use

One category is identified :

-grade 1: For use by people with a high incentive to exercise care and with a small chance of mis-use.

Digit 2- Durability

Three grades are identified according to the number of test cycles achieved:

-grade 4: 25 000 cycles

-grade 5: 50 000 cycles

-grade 6: 100 000 cycles

Digit 3-Door mass

One grade is identified:

-grade 0: No requirement

Digit 4-Fire resistance

Two grades are identified:

-grade 0: not suitable for fire/smoke resistant door assemblies

-grade1: suitable for fire/smoke resistant door assemblies subject to satisfactory assessment of the contribution of the cylinder to the fire resistance of the specified fire/smoke door assemblies. Such assessment is beyond the scope of this European standard (see EN 1634-1).box 4), it must be possible to demonstrate compliance with the Essential Requirements of the Construction Products(Amendments)Regulations.

Digit 5- Safety

One grade is identified :

-grade 0: No requirement

Digit 6- Corrosion and temperature resistance

Four grades are identified as follows :-

-grade 0: no corrosion or temperature resistance requirements

-grade A: BS EN 1670 Grade 3 corrosion resistance (96 hours NSS): no temperature resistance requirements

-grade B: No corrosion resistance: resistance to -20/+80 C temperature extremes

-grades C: BS EN 1670 Grade 3 corrision resistance: resistance to -20/+80C temperature extremes

Note. No distinction is made between the inside and the outside of either the cylinder and/or the door.On completion of the test ,the cylinder must operate.

Digit 7- Key related security

Six grades are identified and the principal requirements are summarised in Table 1`below :

Minimum number of effective differs

Grade
1	2	3	4	5	6

100

300

15,000

30,000

100,000

Minimum number of movaable levers, pins, discs etc

Coding on key should disclose close combination

Yes

Torque resistance of plug

2.5Nm

5Nm

15Nm

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