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Fireproof fuse holder Flame retardant grade

文章出处:Fuses factory Author:Yaxun Electronics Popularity: Time:2017-06-12 12:07 【Big Middle Small
Fireproof fuse holder Flame retardant grade

The temperature coefficient of the Fireproof fuse holder is determined by the raw material used,The higher the temperature, the more expensive the material,This is proportional.

Plastic flame retardant grade by HB,V-2, V-1 to V-0 step by step increase, heat-resistant grade has a code,From the low to high is divided into: Y A E B F H C.

The fire rating of the raw materials is in accordance with the UL94 standard


UL94 standard in the bottom of the flame retardant grade.Requirements For samples with a thickness of 3 to 13 mm,Burning speed less than 40 mm per minute;Less than 3 mm thick sample,Burning speed less than 70 mm per minute;Or extinguished before the 100 mm mark.

 V-0: After two 10-second burn tests on the sample, the flame is extinguished in 30 seconds. Can not have a burning thing falling.

     V-1: After two 10-second burn tests on the sample, the flame is extinguished in 60 seconds. Can not have a burning thing falling.
     V-2: After two 10-second burn tests on the sample, the flame is extinguished in 60 seconds. There can be a burning thing falling.

The flame retardant grade of the raw material is in accordance with UL94 standard
  94HB
A: For samples with a thickness between 0.120 "and 0.500"Within the span of 3.0 "Burning speed can not exceed 1.5 "per minute

B: For samples with a thickness less than 0.120 "The span burning speed at 3.0 "can not exceed 3.0" per minute
C: the flame is near the 4.0 "mark, the sample ends burning.
UL94V-0, V-1, V-2
Sample: 5 "x 1/2" x thickness (typical thickness 1/16 ", 1/8", 1/4 ")

Fireproof fuse holder