Fire resistant partitions rely on the combined fire resistance performance of the facing material, usually plasterboard, of both sides of the partition. When electrical socket and switch boxes are fitted it requires an opening to be cut in the facing material thereby creating a weak point which compromises the overall fire resistance performance of the partition.

Firebreak Electrical Box Protectors are formed from a silicone based intumescent polymer with additional fire resistant additives and are designed to be fitted either inside the electrical box to form a lining or as needs arise to form a cover over the back of the electrical box.

The material is non-setting and easily mouldable by hand ensuring quick and easy installation. Under fire conditions the intumescent filler in the putty expands to many times its original thickness to form a dense block of fire resistant char thereby maintaining the fire resistance performance of the partition and preventing the spread of fire.

Key Features & Benefits

• Independently fire tested and assessed to the requirements of EN 1363-1: 1999 and EN 1366-3: 2009 providing up to 2 hours fire resistance

• Tested with sockets/switches positioned back to back and in uninsulated partitions

• Selection of pad sizes to suit single and double socket and switch boxes

• Quick release protective paper facings to make handling easy

• Can be fitted to either inside or to the back of boxes for maximum flexibility

• Easy to install by hand without the need for specialist tools

• Non-setting to allow for future modification of electrical wiring

• lntumescent unaffected by moisture or CO2 ensuring a long service life and maintenance free once installed correctly

• Resistant to fungal attack

• Does not contain asbestos, fibres, silica, halogens or volatile solvent

• Quality assured manufacture to ISO 9001

Typical Applications

• Socket and switch boxes in partition walls between hotel bedrooms

• Similar boxes fitted to fire compartmenting walls separating rooms from corridors and other circulation spaces

• Retro-fitting to socket and switch boxes in existing fire separating partitions currently at risk of failure should a fire occur

Testing & Certification

• Fire testing to EN 1366-3: 2009 providing up to 2 hours fire resistance to plastic socket and switch boxes

• Fire Classification to EN 13501-2 and CE Mark (ETA 21/0204)

For detailed seal specifications please refer to technical data sheet.

Sizes & Packaging
Single - 170 x 170mm
Double - 230 x 170mm


Product Data Sheet
Firebreak Electrical Box Protectors Product Data Sheet
Firebreak Electrical Box Protectors Technical Data Sheet
Firebreak Electrical Box Protectors Safety Data Sheet

The above information is based on current test data, health and safety information and application instructions supplied by our suppliers and manufacturers of the products. It is supplied for guidance and to the best of our knowledge is true and accurate. Customers should satisfy themselves to the suitability of the products in its intended use and no guarantee is given or implied as the conditions of actual use are beyond our control. If in doubt the customer should consult the designer of the project or the local building control. 

Fire Stopping Shop, disclaim any liability for loss, damage or other expense which may arise from the use of this information, data or products refereed to and reserve the right to amend or change any details without notice. This statement does not affect your statuary rights.