S500-1.25-R

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Fuses are widely used in almost every electrical device and circuit, from home appliances to industrial machinery. The S500-1.25-R is a common type of fuse used for protecting circuits from overcurrent or short circuit conditions. This article will discuss the application field and working principle of the S500-1.25-R fuse.

The S500-1.25-R fuse is a supplementary overcurrent (SOC) type of fuse. It is intended for use in installations providing motor overload protection, in accordance with IEC standard 60669-2-15. As such, it is suitable for protecting motors with single phase power supplies and switchgear cables up to 500A. The fuse is equipped with a 1.25 Watt thermal switch which provides accurate motor overload protection.

The S500-1.25-R is designed with a ceramic and metal body which houses the fuse element. The fuse element is made of a special alloy that is melted by excessive current passing through it. On the metallic base there are two contacts: the breaker and the load. When a short circuit or overload develops, the fuse element melts, thus breaking the circuit and preventing any damage. The maximum breaking capacity of the S500-1.25-R fuse is 270 kA.

The S500-1.25-R also features a thermal switch which is activated when the ambient temperature inside the fuse is too high. The thermal switch triggers the 1.25 Watt fuse element to cut off the current and prevent overheating and damage to the equipment. Furthermore, the S500-1.25-R also has a manual reset function, so that the circuit can be safely restarted after an overload or short circuit situation.

The S500-1.25-R fuse is widely used in a variety of applications ranging from protecting electric motors and home appliances to circuit breakers and other types of electrical equipment. It is suitable for use in single phase power supply systems where short circuit protection is required. Furthermore, the S500-1.25-R fuse also provides reliable overcurrent protection for maximum motor performance.

The working principle of the S500-1.25-R is simple and effective. The fuse element is made of an alloy which melts under excessive current passing through it, thus cutting off the power and preventing any damage. The thermal switch also triggers the fuse element to cut off power when the temperature inside the fuse is too high, protecting the device from overheating and damage. Additionally, the manual reset feature allows the circuit to be restarted after an overload or short circuit situation.

In conclusion, the S500-1.25-R fuse is a supplementary overcurrent type of fuse designed for use in various applications from motor overload protection to home appliance protection. It is equipped with a 1.25 Watt thermal switch that provides accurate motor overload protection and a manual reset function that allows safe restarts after overload or short circuit conditions. Furthermore, the S500-1.25-R fuse can also provide reliable overcurrent protection for maximum motor performance.

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