>Trade Name: Blazetrap® Rapid Outlet Box System (ROBS)
Fire Resistant Electrical Back Box - ROBS Intumescent System
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> Quick Overview
- Brand New CE Marked electrical back boxes.
- UL-EU Accreditation.
- Unique injection moulded intumescent box insert (ROBS Intumescent System) is the first in the UK and Europe.
- Noncorrosive stainless steel back box outer.
- Manufactured in the Great Britain.
- Free of organic solvents and releases no Volatile organic compounds (VOC)’s which have been known to have adverse health effects in fires.
- Halogen free.
- No galvanized or painted coatings, preventing zinc and harmful fume inhalation during fires.
- Tested in accordance with BS EN 1366-3: 2021.
- Tested for Insulated and Non Insulated walls.
- Tested for back to back installation.
- Tested for Timber or metal stud walls construction.
- Fire rating 30, 60, 90, 120 minutes.
- Acoustic Tested BS EN ISO 10140 – 2: 2010 to 67dB
- Quick and simple to install.
- Integrated pushout box fixings suitable for plasterboards 12.5 – 30mm thicknesses.
- Rear, Top and Bottom cable entry. Excepts 20-25mm fire protection glands.
- Completed fire stop system.
- Full product traceability.
- Patented technology and Trade Marked.
- National Winner of the Constructing Excellence Awards 2024.
TO ORDER & SPECIFY
01329 844 500
sales@astroflame.com
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For in-stock items orders received before 2pm (Monday-Friday) are generally dispatched for delivery on the following working day (Monday-Friday).
> Product Description
Blazetrap® Rapid Outlet Box System (ROBS) is a groundbreaking Passive Fire Protection product, recently winning the UK Construction Excellence National Award for Innovation.
Advanced Fire Protection: Many current electrical back boxes are designed only for electrical connections with little fire protection. Blazetrap® ROBS addresses this with a Stainless Steel Electrical Back Box featuring a unique injection-moulded Intumescent insert (ROBS Intumescent System) made from high-quality exfoliated graphite.
Innovative Technology: The ROBS Intumescent System reacts when exposed to fire, forming a solid char around cables, thus insulating the substrate, thereby starving the fire of essential elements for combustion and preventing the passage of fire from one compartment to another. This technology is patented and trademarked.
Complete System: No separate box outers needed, eliminating the risk of incorrect sizes, depths, and materials.
Ease of Installation: Integrated pushout fixing tabs, quick installation of the ROBS intumescent System, no sealants or supporting brackets needed, one size, Blazetrap® ROBS fits all cavity wall depths.
Cost Efficiency: Reduces installation costs, requires zero maintenance, and offers a longer product lifespan.
Traceability: Full product traceability from manufacture to end user and back again.
Product Specifications: ROBS 1 Single Gang Box: 74x74x50mm and ROBS 2 Double Gang Box: 134x74x50mm (standard back box for 30/60 minute applications using 1x12.5mm or 2x12.5mm Boards). Should you require 90/120 minute applications or using 15mm boards please contact sales@astroflame.com.
Liability Reduction: The Blazetrap® Rapid Outlet Box System (ROBS) significantly reduces liability risks associated with electrical installations as well as different trade use installations. Unlike alternative products on the market, such as Putty pads, which require separate purchases from different suppliers and may not be fire-rated or tested together, Blazetrap® offers a complete, tested system. This comprehensive solution ensures enhanced fire protection and compliance with safety standards, providing peace of mind for specifiers, design engineers, architects, installation contractors, main contractors, development owners, and residents. The liability is effectively omitted, eliminating risks associated with incomplete or untested systems.
Experience the future of Passive Fire Protection with Blazetrap® ROBS. Ensure safety and compliance with this cutting-edge solution.
> Technical Data
| ROBS Outer | 430 Stainless Steel |
| Heat Resistance | 815c in continuous service |
| Corrosion | Resistance to acid/moisture |
| ROBS Intumescent System Insert | Halogen-free based on expandable graphite |
| Material Structure | Injection Moulded |
| Liner Thickness | 0.5-2mm |
| Start of Reaction | From ca. 175°C |
| Expansion Ratio | Ca. 16 times |
| Expansion Pressure | Ca. 0.45 |
| (N/mm2) Colour | Anthracite grey |
| Fire Tested | Fire Tested: BS EN 1366-3: 2021 Fire tested for insulated & non insulated walls BS1366-3: 2021 |
| Acoustic Tested | BS EN ISO 10140-2:2010 |
| Product Sizes | Blazetrap® ROBS 1 Single Gang Electrical Back Box: 74x74x50mm. Blazetrap® ROBS 2 Double Gang Electrical Back Box: 134x74x50mm. |
| Electrical Fittings | Allows for 20mm and 25mm fire shield gland fittings Rear, Top and Bottom cable entry Integrated box fixings suitable for plasterboards 12.5 – 30mm thicknesses |
 2821 |
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| Blaze Trap Ltd Unit 29 Penraevons Light Industrial Estate, Jackson Road, Leeds, West Yorkshire, LS7 2AP | |
| CE 2821-CPR-0354 | |
| BS EN 1366-3: 2021
Blazetrap® Rapid Outlet Box System (ROBS 1 & 2) For fire compartmentation and / or fire protection or performance |
|
| Essential Characteristics | Performance/Harmonized Technical Specification |
| Reaction to Fire | Class E according to EN13051-1 |
| Resistance to Fire | Resistance to fire performance & field of application in accordance with EN13501-2 See ETA 25/0262 clause - Annex A |
| Dangerous Substances | See ETA 25/0262 Clause 1 |
| Service & Durability | Type: X Intended for use in conditions exposed to weathering in accordance with EOTA technical documents TR024 |
| Acoustic | BS EN ISO 10140 – 2: 2010 |
| Other | Not applicable/No performance determined |
> Product Availability
ROBS 1 Single Gang Box: 74x74x50mm and ROBS 2 Double Gang Box: 134x74x50mm
| Product Code | Description | Size |
| AFROBS1 | Blazetrap® ROBS 1 Single Gang Electrical Back Box | 74x74x50mm |
| AFROBS2 | Blazetrap® ROBS 2 Double Gang Electrical Back Box | 134x74x50mm |
Standard ROBS boxes are designed to accommodate one or two layers of 12.5 mm boards. If you require compatibility with 15 mm boards, please contact our sales team at sales@astroflame.com to discuss lead times, as these units are manufactured to order.
> To Order & Specify
Please contact us and quote the following information - Quantity / Product Code / Product Description / Size /
Typical wording - 10no / AFROBS2 / Blazetrap® ROBS 2 Double Gang Electrical Back Box / 134x74x50mm
>> Tel: 01329 844 500 or >> Email: sales@astroflame.com
> Installation
We have technical representatives who provide assistance in the selection and specification of the products on this site and should be consulted for exact installation and product suitability. Ensure an early engagement with ourselves, designers, main contractor and specialist installers before any installation. Other trades and/or manufacturers may need to be consulted. For in-depth information, specification and technical advice please call our Head Office on tel 01329 844 500 or email sales@astroflame.com
> Maintenance
All interested parties, designer, specifier, main contractor and specialist installers should provide access to allow the fire stopping seals to be regularly inspected and maintained, as well as records kept of such maintenance at minimum periods of 12 months, as required by the Regulatory Reform Order, and repaired if necessary. Reference should be made to ASFP TGD 17 – Code of Practice for the Installation and Inspection of Fire Stopping.
> Competency
It is vital that those entrusted to design or install a fire stopping product have the necessary levels of competence to undertake the task professionally and thoroughly. The level of competency required will be commensurate with the expected complexity of the building. All designers must eliminate, reduce or control foreseeable risks that may arise during installation, construction or maintenance when preparing or modifying designs. Clients should ensure that the principal designer and principal contractor carry out their duties under CDM regulations. The ASFP foundation course in passive fire protection provides essential knowledge as part of demonstrating competency and understanding in this key fire protection specialism.
> Additional Notes
Please refer to the ETA/UL-EU sheet for fields of application for this product. For further information on installation requirements please refer to the socket box manufacturer data and wall specification to ensure the compatibility of this product, if in doubt please contact the technical team with services and wall specification on: tel 01329 844 500 or email sales@astroflame.com
> Health and Safety
The product does not present any known health hazards during or after installation. Normal good industrial and personal hygiene practices should be observed. For further information on health and safety requirements please contact the technical team on: tel 01329 844 500 or email sales@astroflame.com
> Data Sheet Downloads
Download and review the following available data sheets for this product.
Key Information:
- PDS's are Product Data Sheets
- SDS's are Safety Data Sheets
- TDS's are Technical Data Sheets
- INT's are Install Data Sheets
- VID's are Video Files
- DoP's are Declaration of Performance
- CoC's are Certificate of Constancy of Performance
- ETA's are European Technical Assessment Sheet
- UKTA's are UK Technical Assessment Sheet
- UL Documentation are UL - EU Certificate
> Delivery/Returns
For in-stock items orders received before 2pm (Monday-Friday) are generally dispatched for delivery on the following working day (Monday-Friday). All dates quoted for despatch are estimates only and are not guaranteed. We will endeavour to meet these dates but shall have no liability for any delay in despatch or delivery or any damage or loss occasioned thereby. We may deliver products pursuant to any order by instalments. If we are unable to deliver the goods for any reason,you will be contacted and you will not be obliged to pay for the goods which have not been delivered, you also have the option to cancel the goods that have been delivered, however we shall not be liable for any loss of income or profit which may have been caused by the delay or non delivery of goods.
For information about our returns policy please click here.
> Ask a Question
If you've got a question about this product or need some technical help get in touch with the Astroflame sales or technical team to discuss your requirements today. We are open Monday to Friday 8:00am to 5:30pm. You can always contact us on the following:
Web Page Last Modified: 9th December 2025