350V Time Delay Slow Blow Surface Mounted Fuse
  • Air Pro350V Time Delay Slow Blow Surface Mounted Fuse
  • Air Pro350V Time Delay Slow Blow Surface Mounted Fuse
  • Air Pro350V Time Delay Slow Blow Surface Mounted Fuse
  • Air Pro350V Time Delay Slow Blow Surface Mounted Fuse

350V Time Delay Slow Blow Surface Mounted Fuse

350V Time Delay Slow Blow Surface Mounted Fuse was designed for high voltage withstand application rated at 350V AC and 72V DC , it is compatible with AC application and DC application in different application.

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Product Description

Square End Block Cartridge Style 2-SMD 2410 Time Delay Surface Mount Fuse 1A 350V AC 72V DC


Description of 350V Time Delay Slow Blow Surface Mounted Fuse


The 2410 Time Delay Surface Mount Fuse is suitable for secondary-level overcurrent protection applications at voltages up to 250 VAC and 72 VDC.These lead-free surface-mount devices offer increased reliability and avoid the risk of end caps falling off. Their straight wire element in air performs consistent fusing and cutting characteristics.

350V Time Delay Slow Blow Surface Mounted Fuse factory

Features of 350V Time Delay Slow Blow Surface Mounted Fuse


Wide current ratings

Wide operating temperature-55°C to 125°C

High voltage version – 350VAC 72VDC
Small size 6.1x2.5mm

Excellent inrush withstand ability

Excellent consistency

Automatic production method

Tape in reel and easy to be installed


Application of 350V Time Delay Slow Blow Surface Mounted Fuse


LED driver

Power Supplier

Residential Electric Water Heater

Medical devices

Industrial equipment

Office equipment

Telecom device


Electrical Characteristics of 350V Time Delay Slow Blow Surface Mounted Fuse


% of Ampere Rating(In)

Blowing Time

100% * In

4 hours Min

200% * In

120 sec Max

1000% * In

10ms Min


Dimensional Drawing and Material Details of 350V Time Delay Slow Blow Surface Mounted Fuse (Unit:mm)

350V Time Delay Slow Blow Surface Mounted Fuse factory

NO.

Part Name

Material

1

End caps

Au or Ag Plated Brass Cap

2

Body

Non-Transparent Square Ceramic Tube

3

Fuse element

Cu-Ag Alloy wire


Electrical Specifications of 350V Time Delay Slow Blow Surface Mounted Fuse


Breaking Capacity: [email protected] [email protected],    [email protected][email protected]


Catalog

No.

Ampere

Rating

Voltage

Rating


 Breaking Capacity

Nominal Cold

Resistance

(Ohms)

I2TMelting

Integral(A2.S)

SRT0250

250mA

350V














[email protected]

[email protected]

[email protected]

[email protected]

0.860

0.145

SRT0300

300mA

350V

0.620

0.162

SRT0315

315mA

350V

0.550

0.189

SRT0375

375mA

350V

0.470

0.200

SRT0400

400mA

350V

0.380

0.238

SRT0500

500mA

350V

0.320

0.275

SRT0600

600mA

350V

0.285

0.470

SRT0630

630mA

350V

0.256

0.566

SRT0700

700mA

350V

0.208

0.805

SRT0750

750mA

350V

0.175

1.240

SRT0800

800mA

350V

0.155

1.880

SRT1100

1A

350V

0.148

3.500

SRT1125

1.25A

350V

0.102

4.760

SRT1150

1.5A

350V

0.085

6.305

SRT1160

1.6A

350V

0.075

6.505

SRT1200

2A

350V

0.044

8.950

SRT1250

2.5A

350V

0.043

16.025

SRT1300

3A

350V

0.033

21.560

SRT1315

3.15A

350V

0.029

22.750

SRT1350

3.5A

350V

0.027

27.050

SRT1400

4A

350V

0.025

31.808

SRT1500

5A

350V

0.019

40.250

SRT1600

6A

350V

0.018

67.245

SRT1630

6.3A

350V

0.017

73.550

SRT1700

7A

350V

0.015

76.280


Ø *:These catalog no. cold resistance and I2t value are pending due to fuse elements shall be customized;

Ø DC Cold Resistance are measured at <10% of rated current in ambient temperature of 25℃;

Ø Typical Pre-arching I2t arecalculated at 10*In Current or 8ms;

Ø Min Interrupting Rating: 1.35*In.


Package method of 350V Time Delay Slow Blow Surface Mounted Fuse


Tape in reel, 1,000 pcsin 7 inches dia. reel, 12mm wide tape, EIA Standard 481


Average Time Current Curves of 350V Time Delay Slow Blow Surface Mounted Fuse

350V Time Delay Slow Blow Surface Mounted Fuse factory


Does a fuse resistor work the same as a fuse?


A resistor is available for a certain load. If the current flowing through the resistor goes beyond the limit, it will be burned and the circuit will be open. At this point, a resistor is similar to a fuse, i.e., the current can be interrupted upon overcurrent. This seems like a fuse function. In this way, some manufacturers change the fuse in its original design to cheap fuse resistors to keep cost down, presenting customers with superficial security.

However, is a fuse resistor able to substitute a fuse to have the same function? The answer is obviously no.

As we know, a good fuse must possess three essential functions: protection, load bearing and safety, while a fuse resistor may not be able to work well in all three aspects.

The protection function covers overload protection and short circuit protection. Specifically, a fuse must operate within the specified time when an unexpected overcurrent, even an extremely short overcurrent, occurs in the circuit, so as to protect the circuit and parts. A fuse resistor may not be as accurate as the fuse in terms of technical parameters like starting time and operation duration, and thus cannot ensure overcurrent protection. It only works to some extent for short current.

The load bearing function of a fuse is ensured by the I2t value, which enables a fuse to withstand pulse shocks of a certain energy from switching operations. We should calculate and evaluate this value before fuse selection. Nevertheless, a fuse resistor has no similar technical indexes, so it may be blown by a pulse if the value is small or fail to protect the circuit if it is large.

As for safety, a fuse can be assured through rated voltage, interrupting capacity and other indexes, especially safety compliance certification by an authorized third party. A fuse resistor is not a safety component, so it does not need certification. Its safety is therefore questionable. Furthermore, it has insufficient protection, and its hard to ensure no hazards occur during the breaking process.

In conclusion, a fuse resistor may blow upon overcurrent, but it cannot work the same as a fuse. In most applications, it will not be appropriate to replace a fuse with a fuse resistor to cut cost.


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