SR-5F-3.15A-AP

Package / Case:	Radial, Can, Vertical
DC Cold Resistance:	0.037 Ohms
Size / Dimension:	0.335" Dia x 0.319" H (8.50mm x 8.10mm)
Color:	--
Operating Temperature:	-40°C ~ 125°C
Approvals:	cULus, PSE
Melting I²t:	23.2
Breaking Capacity @ Rated Voltage:	50A
Mounting Type:	Through Hole
Series:	SR-5F
Response Time:	Fast
Voltage Rating - AC:	250V
Current Rating:	3.15A
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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SR-5F-3.15A-AP application field and working principle

Fuses are important electrical components that protect wires and other circuit elements from excessive current. The correct fuse installation is essential to ensure safe electrical system protection. The SR-5F-3.15A-AP is a polycarbonate cartridge fuse designed specifically for protecting electrical circuits from overloads or short circuits.

Application Field

SR-5F-3.15A-AP is suitable for soft starters, safety circuits, current circuit, motor contactor and other electronic equipment. It is designed for over current and short circuit protection of circuits with AC 50/60Hz, DC voltage up 400V and current up to 3.15A.

Working Principle

When an overload or short circuit current flows through the SR-5F-3.15A-AP fuse, the internal element of the fuse will become hot, and the fusing mechanism will be activated to disconnect the circuit. The fuse element is a thin aluminum strip with high thermal conductivity. The fuse element is encapsulated in a metal or plastic housing. The fuse housing acts as a heat sink and helps to dissipate the heat generated during a fault. The SR-5F-3.15A-AP fuse has a rectangular shape with a length of 1.85 inches and a diameter of 0.62 inches. It is designed with a minimum breaking capacity of 1500A, a max voltage rating of 400V and a max current rating of 3.15A. The body of the fuse is made of flame retardant polycarbonate material with UL 94V-2 rating for increased safety. The two ends of the fuse are designed with an integrated insulating base to prevent accidental contact with live parts.

Advantages

The SR-5F-3.15A-AP fuse has the following advantages: 1. The compact rectangular shape allows for easy installation in cramped spaces.2. The sturdy construction ensures long-term operation and high reliability.3. The heat sink function increases the load carrying capacity of the fuse.4. The integrated insulating base provides additional safety for users.5. The flame-retardant polycarbonate body ensures long life with increased reliability.6. The fuse can be easily re-set if necessary.

Conclusion

The SR-5F-3.15A-AP is a reliable fuse designed to protect electrical circuits from overloads or short circuits. Its compact size and high-quality construction make it suitable for many applications such as motor contactor, safety circuits and current circuits. The integrated insulating base provides additional safety to users, and the flame-retardant polycarbonate body ensures long life with increased reliability. It is easy to install and can be easily re-set if necessary. Thus, the SR-5F-3.15A-AP fuse is a great choice for protecting circuits from overloads and short circuits.

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