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The Only Supplier of China′s Aerospace Grade Fuse ___ Songshan Fuse

Basic Info

Model No.:  GRF

Product Description

Model NO.: GRF Type: Current Fuse Shape: Insert Trademark: Songshan HS Code: 85361000 Breaking Capacity: High Usaga: Low Voltage Standard: Sast Origin: Shanghai, China GRF solid fuse with high reliability for aerospace application adopts the solid ceramic material for its substrates. In order to ensure high stability of the fuse, silver paste or gold paste is selected for its melt material. When overload current or short circuit occurs in the circuit of the spacecraft, excessive current will increase the temperature of the melt material rapidly, leading to the melting. The melt material in the melted state will be wrapped and absorbed by special arc extinguishing material so as to cut the circuit and prevent arcing short circuit. The gas and plasma generated in the fusing process will be limited and sealed in the fuse. There is no risk of producing cracks and sparks in the process of fusing, no escaping gases either, let alone fragment and slag. A number of rigorous tests conducted to the product proved that this product can be used in various harsh environments known to human for a long time to safeguard the safety and security of equipments, which is a leading product in the world at present. The product can replace the fuse type FM12 made by AEM company of the United States.

Quality Standard
SAST (the eighth institute of China aerospace science and technology's standard) 
Solid overall characteristics.
Reliable fusing characteristics.
The adaptability of harsh environment.
Long life

Breaking capacity in 1000A
Aerospace. the frontier of high military and civilian equipment.
Working Temperature
Electrical characteristics
Types and Specifications Cold resistance (Ω) Overload fusing time                 (S) Maximum Current Breaking I2t (A2S)
Type Rated Current A Rated Voltage  VDC Min Max 2.5In 4In 6In 2.5In 4In 6In
GRF 1 125 0.160 0.260 0.01-0.3 0.001-0.015 0.00015-0.004 1.875 0.240 0.144
1.5 125 0.120 0.210 0.01-0.3 0.001-0.015 0.00015-0.004 4.218 0.540 0.324
2 125 0.080 0.150 0.01-0.3 0.001-0.015 0.00015-0.004 7.500 0.960 0.576
3 125 0.070 0.120 0.01-0.3 0.001-0.015 0.00015-0.004 16.875 2.160 1.296
4 125 0.045 0.080 0.01-0.3 0.001-0.015 0.00015-0.004 30.000 3.840 2.304
5 125 0.035 0.070 0.01-0.3 0.001-0.015 0.00015-0.004 46.875 6.000 3.600
7.5 125 0.015 0.030 0.01-2.0 0.001-0.030 0.00015-0.006 703.125 27.00 12.15
10 125 0.010 0.020 0.01-2.0 0.001-0.030 0.00015-0.006 1250.00 48.000 21.60
15 125 0.006 0.012 0.01-4.0 0.001-0.040 0.00015-0.010 5625.00 144.00 81.00
 1. Cold resistance with 0.1In testing current to test, In is Rated current.
 2. Overload fusing time In -55ºC and 2.5In must ≤5s. 
 3. In -55ºC and 2.5In, Maximum Current Breaking I2t may be larger than the indicated. Calculate temperature is -55ºC. Overload current is 2.5In maximum I2t, use the
 resulting of max fusing time to multiply I2.


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Product Categories : Aerospace Fuse

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