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Ceramic Tube Fuse 5*20 Fast-Acting RF1-20
  • Ceramic Tube Fuse 5*20 Fast-Acting RF1-20
Payment Type: T/T, D/P, Western Union, Paypal
Min. Order: 1000
Basic Info

Model No.:  RF1-20

Product Description Model NO.: RF1-20 Type: Current Fuse Shape: Insert Fusing Device: Pop-up Solid Trademark: songshan Origin: Shanghai, China Breaking Capacity: Low Usaga: Low Voltage Fusing Speed: F Standard: VDE Specification: 5.0x20 mm HS Code: 85361000 RF1-20 series(Ceramic tube)
RF1-20 ceramic tube high breaking fast-acting fuse, with size: Ф5×20±0.5, the products conform to TUVJ50078894 standard. This product is not with lead, and needs to be fitted with a holder or clip.
This product is: fuse installed in the porcelain tube is filled with quartz sand, which acts as the arc extinguishing medium. The particle size of quartz sand has a great influence on the arc extinguishing performance, and the particle diameter is in the range of 0.2~0.3mm. When the overload current or short-circuit current goes through the fuse, the fuse melts and arc is generated  in the tube, the quartz sand has a strong cooling effect on arc and deionization, the arc soon extinguished. In breaking up the large short-circuit current; usually the arc can be extinguished before the short circuit current has not reached the maximum value. In the whole process of breaking current, there is the phenomenon of silent light, no ionized gas, and high breaking capacity.

Ceramic Tube Fuse 5*20 Fast-Acting RF1-20

Electrical  characteristics
   Model Rated current
Rated voltage
Voltage drop
Power consumption
RF1-20 500mA 250 1000 1.6
RF1-20 630mA 250 650 1.6
RF1-20 750mA 250 650 1.6
RF1-20 800mA 250 240 1.6
RF1-20 1A 250 200 1.6
RF1-20 1.25A 250 200 1.6
RF1-20 1.6A 250 190 1.6
RF1-20 2A 250 170 1.6
RF1-20 2.5A 250 170 1.6
RF1-20 3.15A 250 150 2.5
RF1-20 4A 250 130 2.5
RF1-20 5A 250 130 2.5
RF1-20 6.3A 250 130 2.5
RF1-20 8A 250 130 4
RF1-20 10A 125/250 130 4
RF1-20 12.5A 125/250 100 6
RF1-20 15A 250 100 6
RF1-20 16A 125/250 100 6
Current characteristics
Rated  Blowing time
more than 100mA-6.3A more than 6.3A-10A more than
2.1In Max 30min 30min 30min
Min 50ms 50ms 50ms
Max 2s 2s 3s
4 In Min 10ms 10ms 10ms
Max 300ms 400ms 400ms
10 In Max 20ms 40ms 50ms
Rated Breaking Capacity
35A or 10In whichever is greater  
Model Certification Certification number Current range
RF1-20 VDE 136760 1A-5A
RF1-20 TUV J50078894-0001
RF1-20 series(Ceramic tube) Current-time curve
Ceramic Tube Fuse 5*20 Fast-Acting RF1-20


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