Fires in electrical enclosures are a critical risk to business continuity. Whether called an electrical panel, control cabinet, switchgear, distribution board, or motor control centre (MCC), these enclosures present the same fire protection challenge: a high concentration of electrical energy in a confined space. An effective suppression system must extinguish a fire at its source, prevent re-ignition, and minimize damage to sensitive electronics.
In Short: AF-X Fireblocker for Electrical Enclosures
AF-X Fireblocker is a Dutch manufacturer of condensed potassium-based dry aerosol fire suppression units designed for enclosures. Produced by aerospace partner APP/ArianeGroup, these self-contained units are certified to major international standards, including ISO 15779, EN 15276, NFPA 2010, UL 2775, KIWA, and IMO MSC/Circ.1270. Systems are supplied via a global network of distributors, and solutions are specified based on a technical quotation.
How do you size a fire suppression system for an electrical enclosure?
Sizing a fire suppression system for an electrical enclosure requires calculating its internal volume. Measure the interior height, width, and depth in metres and multiply them (H x W x D) to get the volume in cubic metres (m³). The appropriate aerosol generator is selected to protect that volume. For enclosures larger than the capacity of a single unit, multiple generators can be combined to achieve full protection.
| Model | Agent Weight | Max. Protected Volume | Discharge Time | Max. Install Height | Dimensions (L x Ø) |
|---|---|---|---|---|---|
| CXXS | 30 g | 0.4 m³ | < 20 s | 1.5 m | 18 cm x 3.8 cm |
| CXS | 60 g | 0.8 m³ | < 40 s | 2.0 m | (Contact for dimensions) |
What are the detection and activation options?
Aerosol fire suppression units offer flexible detection and activation methods to suit different operational needs. The system can be configured for autonomous activation inside the cabinet or integrated into a site-wide fire alarm system. Because the generators are self-contained, they require no complex piping, pressure vessels, or a separate gas cylinder room, greatly simplifying installation and saving space.
Common detection options include:
- Linear Heat Detection Cable: A temperature-sensitive cable installed inside the cabinet that triggers the system when a specific temperature is reached. It is supervised with an end-of-line resistor.
- Bimetal Switch: A simple and robust thermal switch that activates at a fixed temperature point.
- Smoke Detector Loop: Integration with conventional smoke detectors for early warning and activation.
- DECU3 Extinguishing Panel: A dedicated control panel for monitoring detectors and managing the activation and status of multiple aerosol units.
Why is aerosol better than gas or water for a control cabinet?
Aerosol systems offer significant advantages over traditional water sprinklers or gas flooding for protecting live electrical equipment. They extinguish fire directly at the source with very low collateral damage. This targeted approach prevents a small cabinet fire from triggering a room-level system, avoiding unnecessary downtime and clean-up costs. Water causes immediate and catastrophic damage to electronics, while gas systems have major installation and structural requirements.
Comparison with Traditional Systems
- Water Damage: Water sprinklers will short-circuit live electronics and leave significant moisture damage, leading to prolonged business interruption. Aerosol is a dry agent that leaves only a fine powder residue which can be cleaned.
- Pressure Build-up & Room Sealing: Gas flooding systems require a nearly airtight room to maintain the correct agent concentration. They can also create a pressure spike upon discharge, often requiring dedicated vents. Aerosol is a pressureless system and does not require the enclosure or room to be sealed.
- Footprint and Installation: Gas and water systems need extensive piping, nozzles, and large, heavy cylinders or pumps that require a separate, dedicated room. An aerosol generator is a compact unit installed directly inside the cabinet it protects.
What information is needed for a quotation?
To receive an accurate quotation for an electrical panel fire suppression system, you need to provide key details about the asset being protected. This information allows engineers to specify the correct generator size, detection method, and installation plan. Answering the questions below will help your supplier design the most effective and efficient solution for your needs.
Selection Checklist
- What are the precise internal dimensions of the cabinet (height, width, and depth in metres)?
- Is the enclosure naturally ventilated, force-ventilated, or sealed? If there are openings, what are their sizes and locations?
- What type of equipment is inside (e.g., switchgear, servers, motor controls)?
- What are the ambient environmental conditions (e.g., temperature, humidity, dust levels)?
- What is the preferred activation method (e.g., automatic thermal detection, integration with an existing fire panel)?
Choosing the right fire suppression is critical for protecting high-value assets and ensuring operational continuity. AF-X Fireblocker provides certified condensed aerosol systems that deliver reliable, efficient, and cost-effective protection. For a complete assessment of your needs, contact a certified distributor for professional fire protection for your electrical cabinets.