Description: group of related goods produced by the same company under the same brand. ; Name: product family
Description: 2nd level of a 3 level manufacturer specific product hierarchy; Name: Manufacturer product family
Description: norm/stipulation describing the explosion protection. The explosion protection type, the device category, the temperature class as well as the device / explosion group are taken from this norm. The type and number of the norm/stipulation with issue year and issue month must be given; Name: Reference norm of the explosion protection