The IULNK11-1-52-100., IULN family is a sealed toggle version of the IUL family. The silicone rubber seal around the handle assures panel seal integrity and makes this style a natural for harsh environments. Dimensions of this circuit breaker are: 38.48 mm x 63.24 mm x 47.22 mm. Operating temperature range is from - 40 °C to + 85 °C.