Basic Info
Model No.: RF2-20(H)
Product Description
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
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Product Categories : Cartridge Fuse > Ceramic Fuse
