Hbc Tube Fuse Fast-Acting Axial Lead

Model NO.: RF2-20(H) Type: Current Fuse Shape: Insert Fusing Device: Pop-up Solid Trademark: songshan Origin: Shanghai, China Breaking Capacity: High Usaga: Low Voltage Fusing Speed: F Standard: VDE Specification: 5x20 mm HS Code: 85361000 RF2-20(H) series
RF2-20 (H) ceramic tube fast-acting high breaking capacity fuse with lead, size: Ф5×20±1, the products conform to IEC60127-11 standard.
This product is a high breaking product, the melt of such fuse with high breaking capacity is usually made of copper, and also silver. When the rated current is smaller, the melt is usually made into a filament; when the rated current is larger, it will be made into a variable cross-section. Since copper and silver are metal materials with high melting point, to break current reliably under high overload current, low melting point metal is often welded in the melt intervals, such as tin or cadmium alloy, in order to reduce the melting temperature, this effect is also known as metallurgical effect (M effect).

Unit:mm
 

 
Electrical  characteristics

Model	Rated current (A)	Rated voltage (V)	Max Voltage drop (mV)	Max persistence Power consumption (W)
RF2-20(H)	500mA	250	1800	2.5
RF2-20(H)	630mA	250	1500	2.5
RF2-20(H)	800mA	250	1200	2.5
RF2-20(H)	1A	250	1000	2.5
RF2-20(H)	1.25A	250	800	4
RF2-20(H)	1.6A	250	600	4
RF2-20(H)	2A	250	500	4
RF2-20(H)	2.5A	250	400	4
RF2-20(H)	3.15A	250	350	4
RF2-20(H)	4A	250	300	4
RF2-20(H)	5A	250	250	4
RF2-20(H)	6.3A	250	200	4
RF2-20(H)	8A	250	200	4
RF2-20(H)	10A	250	200	4
RF2-20(H)	12.5A	250	180	4
RF2-20(H)	16A	250	180	6

 
RF2-20(H) Current characteristics

Rated		Blowing time
		500mA-4A	More than 4A-6.3A	More than 6.3A-10A	More than 10A-16A
2.1In	Max	30min	30min	30min	30min
2.75 In	Min	10ms	10ms	40ms	40ms
	Max	2s	3s	20s	20s
4 In	Min	3ms	3ms	10ms	10ms
	Max	300ms	300ms	1s	1s
10 In	Min	20ms	20ms	30ms	40ms

 
Rated breaking capacity:1500A 
 
 
RF2-20(H) series Current-time curve


                                          Current(A)

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