3SB 2.5

Package / Case:	3AB, 3AG, 1/4" x 1-1/4"
DC Cold Resistance:	0.11 Ohms
Size / Dimension:	0.250" Dia x 1.252" L (6.35mm x 31.80mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CE, CSA, PSE, UL
Melting I²t:	94
Breaking Capacity @ Rated Voltage:	100A
Mounting Type:	Holder
Series:	3SB
Response Time:	Slow
Voltage Rating - AC:	250V
Current Rating:	2.5A
Fuse Type:	Cartridge, Glass
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction:

Fuses are a type of protection device used to limit the current flowing through an electric circuit. They are used to protect conductors and electrical equipment from destruction by current overloads or short circuits. The most commonly used type of fuse is the 3SB 2.5 fuse.

Application Field:

The 3SB 2.5 fuse is commonly used in residential and commercial applications where medium current is required. It is particularly well suited for use in distribution systems, appliances, machines, and other equipment, such as air conditioners, refrigerators, microwaves, and water heaters.The 3SB 2.5 fuse’s capacity to interrupt current up to a specified value protects the electrical system by preventing catastrophic damage in the event of an overload or short circuit.

Working Principle:

The 3SB 2.5 fuse is a type of cartridge fuse that is composed of three components: the base, fuse disc/link, and fuse holder. The fuse disc/link is made of a metal alloy that has a low melting point. When a current overload or short circuit occurs, the large increase in current causes the metal alloy to transform into a liquid, dissipating the energy. This dissipates the excess current and prevents further damage.The fuse base and holder are made of a strong, heat-resistant material that encloses the fuse disc/link. The fuse holder secures the fuse base to the circuit, while the fuse base provides a secure location for the fuse disc/link. In the event of an overload or short circuit, the base and holder contain the energy within the unit and prevent injury or damage to people and equipment in the surrounding area.

Conclusion:

The 3SB 2.5 fuse is a reliable and effective protection device that is suitable for use in a wide range of applications where medium current is required. Its components are designed to contain and dissipate electrical energy in the event of an overload or short circuit, preventing damage to people and equipment.

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