BS EN 1155 – Electrically Powered Hold-Open Devices
This European standard specifies requirements for separate hold-open devices and also for hold-open mechanisms incorporated in a door closer. Electrically powered hold-open devices for swing doors manufactured according to this European standard can hold a swing door at a fixed position or can allow the door to swing freely. In each case interruption of the electrical supply will cause the controlled door to close positively.![](https://www.hoppe.com/gb-en/wp-content/uploads/2023/08/ARRONE-Headerbild-Standards-BS-EN-1155-Electrically-Powered-Hold-Open-Devices-1920-x-1080.jpg)
6-Digit Coding System
This European standard specifies requirements for separate hold-open devices and also for hold-open mechanisms incorporated in a door closer. Electrically powered hold-open devices for swing doors manufactured according to this European standard can hold a swing door at a fixed position or can allow the door to swing freely. In each case interruption of the electrical supply will cause the controlled door to close positively.
BS EN 1155:1997 classifies door furniture by using a 6-digit coding system.
Digit 1 – Category of use
Only one category of use is identified for electrically powered hold-open devices:
Grade 3: for doors for use by the public, and others, with little incentive to take care, i.e. where there is some chance of misuse of the door
Digit 2 – Number of test cycles
Two test durations are identified for devices manufactured to this European standard:
Grade 5: 50,000 test cycles, for all electrically powered hold-open devices
Grade 8: 500,000 test cycles, for all electrically powered hold-open and free-swing door closers and devices that contain operating arms
Digit 3 – Test door mass/size
Five door mass grades and related hold-open power sizes are identified according to Table 1 of this European standard.
Hold-open Power Size | Recommended Door Leaf Width max. mm kg | Test Door Mass (kg) |
3 | 950 | 60 |
4 | 1,100 | 80 |
5 | 1,250 | 100 |
6 | 1,400 | 120 |
7 | 1,600 | 160 |
Digit 4 – Fire resistance
Only one grade of fire resistance is identified for electrically powered hold-open devices manufactured to this European standard:
Grade 1: suitable for use on fire/smoke door assemblies subject to satisfactory assessment of the contribution of the electrically powered hold-open device to the fire resistance of specified fire/smoke door assemblies
Digit 5 – Safety
Electrically powered hold-open devices are required to satisfy the Essential Requirement of safety in use. Therefore only grade 1 is identified
Digit 6 – Corrosion resistance
Five grades of corrosion resistance are identified in accordance with BS EN 1670:2007:
Grade 0: no defined corrosion resistance
Grade 1: mild resistance
Grade 2: moderate resistance
Grade 3: high resistance
Grade 4: very high resistance
Source: Door and Hardware Federation (DHF) Best Practise Guide – Electrically Powered Hold Open Devices for Swing Doors – BS EN 1155