3SB 4-R

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Fuses are devices that are designed to efficiently protect circuits from damage due to overcurrent and short-circuiting. Since the introduction of fuses over a century ago, these devices have evolved and adapted to satisfy the electronic protection needs of modern equipment. The 3SB4-R is a fuse commonly used in a variety of applications, and are known for their high energy-absorbing capability and high breaking capacity.

3SB 4-R Applications

The 3SB4-R fuse is mainly used in industrial and residential applications, including electrical motors, NC/CNC machines, welding equipment, air conditioners, wind turbines, appliances, lighting systems, elevators, and more. It can also be applied in a variety of other high-current circuits. The 3SB4-R fuse offers superior levels of insulation, and is suitable for operation in harsh environmental conditions, such as AC failure, severe icing, or high elevation.

The 3SB4-R is available in 1 to 8-pole versions, which makes it ideal for connecting several circuits in one device. Additionally, the fuse is designed to withstand harsh conditions such as high-peak current, overload, and surge, which makes it suitable for a wide range of applications. It is also certified for use in circuit protection devices and in other electrical components.

3SB 4-R Working Principle

The 3SB4-R fuse works by sensing the current flowing in the circuit and using its associated components to interrupt the flow of current upon reaching a predetermined maximum current threshold. When the current reaches a certain peak, the fuse doesn’t break down, but instead, it melts the element inside the fuse and interrups the current flow. This is known as the fuse’s electrical tripping characteristic, which helps to prevent the circuit from overloading.

The 3SB4-R fuse has two parts: a thermistor and a trip mechanism. The thermistor is designed to sense high current levels and activate the associated trip mechanism upon detection. The trip mechanism then trips the fuse, which in turn, breaks the circuit. This helps to protect components downstream from both over-currents and thermal failure.

In addition to using a two-part system, the 3SB4-R also uses a two-point contact system which allows for a more stable and reliable performance, even over rough environments. The fuse is able to withstand a wide range of temperature swings without affecting its performance, and is UL certified for safety and operation. The fuse also features a unique housing design that prevents environmental corrosion.

Conclusion

The 3SB4-R is an efficient and reliable fuse that is used in a variety of applications, such as in electrical motors, NC/CNC Machines, welding equipment, air conditioners, wind turbines, appliances, lighting systems, elevators, and more. It operates by sensing the current and tripping when a predetermined maximum current is reached, which in turn, protects downstream components from both over-currents and thermal failure. The 3SB4-R is UL-certified, and features a unique housing design that prevents environmental corrosion. This makes it an ideal choice for a wide range of applications.

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