The temperature resistance coefficient of a fuse holder is determined by the material used in the mold. The higher the temperature resistance, the better the material, and this is directly proportional. Heat resistance ratings are coded, from low to high: YAEBFHC.
The material's fire rating is based on the UL94 standard.
This is the lowest flame retardancy rating in the UL94 standard. For samples 3 to 13 mm thick, the burning rate must be less than 40 mm/minute; for samples less than 3 mm thick, the burning rate must be less than 70 mm/minute; or the sample must extinguish at the 100 mm mark.
V-0: After two 10-second burning tests, the flame extinguishes within 30 seconds. No burning material should fall out. V-1: After two 10-second burning tests, the flame extinguishes within 60 seconds. No burning material should fall out. V-2: After two 10-second burning tests, the flame extinguishes within 60 seconds. Some burning material may fall. The material's flame retardancy rating complies with UL94 standards.
This is the lowest flame retardancy rating in the UL94 standard. For samples 3 to 13 mm thick, the burning rate must be less than 40 mm/minute; for samples less than 3 mm thick, the burning rate must be less than 70 mm/minute; or the material must extinguish before the 100 mm mark.
V-0: After two 10-second burning tests, the flame extinguishes within 30 seconds. No burning material may fall. V-1: After two 10-second burning tests, the flame extinguishes within 60 seconds. No burning material may fall. V-2: After two 10-second burning tests, the flame extinguishes within 60 seconds. Some burning material may fall.