Home > Products > Aerospace Fuse > Aerospace High-reliability Solid Fuse

Aerospace High-reliability Solid Fuse

Brand : Songshan

Product origin : Shanghai

Delivery time : 7-15 days

Supply capacity : 15000000

Basic Info


Model No.: GRF

Type: Current Fuse

Usaga: Low Voltage

Breaking Capacity: High


Additional Info


Packaging: Carton

Brand: Songshan

Transportation: Ocean,Land,Air

Place of Origin: Shanghai,China


Product Description


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.


radial lead fuse


Rated Current 

1A.1.5A.2A.3A.4A.5A.7.5A.10A.15A 

    25A

L

9.70±0.20mm

14.50±0.20mm

W

10.35±0.25mm

12.45±0.25mm

H

5.50±0.10mm

5.50±0.10mm

D

 φ1.30±0.06mm

 φ2.00±0.10mm

B

 5.70±0.10mm

 5.70±0.10mm

l

 25.00±2.00mm

 25.00±2.00mm


Quality Standard

SAST (the eighth institute of China aerospace science and technology`s standard) 

 

Characteristics

Solid overall characteristics.

Reliable fusing characteristics.

The adaptability of harsh environment.

Long life


Breaking capacity in 1000A

 

Application

Aerospace, the frontier of high military and civilian equipment.

 

Working Temperature

-55℃~+125℃


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 -55℃ and 2.5In must ≤5s. 

   3. In -55℃ and 2.5In, Maximum Current Breaking I2t may be larger than the indicated. 

Calculate temperature is -55℃. Overload current is 2.5In maximum I2t, use the resulting of max fusing time to multiply I2.

 


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