How are fire-resistant enclosures tested, and where are they used?
Short answer
Fire-resistant enclosures are tested using the UL 94 test, established by the U.S. Underwriters Laboratories, and the European DIN 4102 part 12 standard. UL 94 assesses the burning behaviour of plastics through horizontal and vertical burning tests that classify materials by their ability to resist and self-extinguish flames, while DIN 4102 part 12 covers the fire resistance of electrical installation systems as a whole. Our WKE range is made from durable thermoset plastic and can help keep the equipment inside operating for 30 to 90 minutes (E30-E90), which suits emergency lighting, smoke extractor systems and other vital safety components on escape and rescue routes.
For our fire-resistant enclosures we use both the UL 94 test, established by the U.S. Underwriters Laboratories (UL), and the European DIN 4102 part 12 standard. Together these assess the burning behaviour of plastics and the fire resistance of electrical installations, ensuring they maintain functionality during a fire.
The UL 94 test involves rigorous assessments to determine how materials, particularly plastics, react to fire. It includes methods such as horizontal and vertical burning tests, which classify materials based on their ability to resist and self-extinguish flames.
The DIN 4102 part 12 standard focuses more on the overall fire resistance of electrical installation systems. It evaluates how these can withstand and function in extreme heat and fire conditions, which is vital for safety in emergency situations.
As for applications, these fire-resistant enclosures, and our WKE range in particular, are crucial in ensuring the safe, continuing function of electrical systems during fires: https://www.spelsberg.co.uk/fire-protection-cable-boxes/. Our electrical functional integrity WKE and WKE 2-6 brochures cover the fire-resistance range in more detail and can be downloaded at https://www.spelsberg.co.uk/service/info-request/
Because they are made of durable thermoset plastic, the WKE series can help ensure unaffected operation of the electrical equipment within for 30 to 90 minutes (E30-E90). That makes them highly suitable for critical applications such as maintaining operational emergency lighting, smoke extractor systems and other vital safety components in escape and rescue routes during a fire.
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