3412.0120.11

Response Time:	Fast
DC Cold Resistance:	0.0235 Ohms
Size / Dimension:	0.063" L x 0.031" W x 0.024" H (1.60mm x 0.80mm x 0.60mm)
Color:	--
Operating Temperature:	-55°C ~ 90°C
Approvals:	cURus
Melting I²t:	0.4
Breaking Capacity @ Rated Voltage:	50A
Mounting Type:	Surface Mount
Package / Case:	0603 (1608 Metric)
Series:	USF 0603
Voltage Rating - DC:	32V
Voltage Rating - AC:	32V
Current Rating:	2.5A
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	--

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What are Fuses

Fuses are an integral part of any electrical system. They are designed to protect circuits and equipment from electrical overloads and excess current created by short circuits. Fuses also come with special characteristics making them suitable for various types of equipment, applications, and functions.

3412.0120.11 Application Field and Working Principle

The 3412.0120.11 is a fuse specially designed for applications requiring high-fusing characteristics in circuit breakers and short-circuit protections. This fuse can be used in DC and AC applications up to a rated voltage of 120V, and up to a current of 20A. It can also be used as a current limiting device in combination with a HRC fuse. The 3412.0120.11 is a two-pole, ground fault protected fuse link. It consists of a cylindrical metal body which houses two parallel fuse elements and a ceramic insulating sleeve. These fuse elements are held in place by a metal end cap with a built-in trip lever that will break away if a short circuit or overload occurs.The two fuse elements of the 3412.0120.11 work in tandem to operate according to the principles known as the I2T principle and M2T principle (I for Current and M for Magnetic). The I2T principle states that the larger the initial current, the faster the fuse will trip. This is called a “short time delay”. Conversely, the M2T principle states that the larger the inductive load, the slower the fuse will trip. This is called a “long time delay”. The 3412.0120.11 is designed to provide maximum protection from short circuits while also providing a long time delay. The fuse’s two fuse elements work together to achieve this. The internal arcing distance and arc overvoltage compensation help ensure that the fuse will trip quickly without causing unnecessary equipment damage.In addition, the 3412.0120.11 also features a built-in ground fault protection circuit to help protect against ground faults. The ground fault protection feature of the fuse is activated when the load voltage falls below a certain threshold. This will trigger the circuit breaker to open, preventing further damage by the ground fault.

Conclusion

The 3412.0120.11 fuse is a high-fusing two-pole ground fault protected fuse link. It features two fuse elements designed to operate according to the I2T and M2T principles. The fuse’s arcing distance and arc overvoltage compensation help ensure that it will trip quickly without causing unnecessary damage. In addition, its built-in ground fault protection circuit helps protect against ground faults. All of these features make the 3412.0120.11 an ideal choice for protecting circuits from short circuits and overloads.

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Part Number	Manufacturer	Price	Quantity	Description