Protecting critical electrical control
components in a fire up to 1093°C
for 30 minutes, with an internal
temperature that does not exceed
87°C, Cooper Crouse-Hinds and
Thermal Designs UK have
developed a new fireproof enclosure
solution. Based on COOPER
Crouse-Hinds’ 316 stainless steel STB
enclosure (600 x 400 x 220mm), it is
coated externally with Thermal
Designs’ K-MASS fire resistant
coating.

K-MASS is an intumescent,
moulded-on protective coating that is
certified to UL 1709. Upon exposure
to fire, it begins to intumesce (expand
rapidly) by evaporative cooling and
charring on the surface of the coating.

The surface char deepens in layers
filling voids, insulating critical equipment
in the enclosure, cooling and
reflecting the heat back into the fire.