Fireproof enclosure solution
24 September 2010
Cooper Crouse-Hinds and Thermal Designs UK have created a fireproof enclosure solution that protects critical electrical control components in a fire up to 1,093 deg C for 30 minutes, whilst the internal temperature of the enclosure does not exceed 87 deg C.
Fireproof enclosure solution
The enclosures are based on Cooper Crouse-Hinds’ 316 ATEX approved stainless steel STB enclosure that is coated externally with Thermal Designs’ world-renowned K-MASS fire resistant coating.K-MASS is an intumescent, moulded-on protective coating that is certified to UL 1709. Upon exposure to fire, the material begins to expand rapidly in response to heat by beginning a process of evaporative cooling and charring on the surface of the coating. The surface char deepens in successive layers filling voids, insulating the critical equipment within the enclosure, cooling and reflecting the heat back into the fire. This process continues until the fire is extinguished or the material is consumed.In the presence of heat, K-MASS expands to many times its original size. This pyrolytic reaction shileds wire insulation, solder connections, circuit boards, terminal blocks, relays and metallurgy, enabling critical control components to continue operating during the fire.
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