VTP190F

PTC Resettable Fuses: VTP190F Application Field and Working Principle

PTC resettable fuses are multi-function over-current protection devices that can protect against over-voltage, short-circuit, and over-current events. They provide protection for systems and components against damage caused by power surges and other sudden overcurrent events. The VTP190F is one of the most popular fuses available and is often used in a wide variety of applications.

The VTP190F is a self-resetting polymeric fuses with a preset voltage range of 185V to 190V at 20°C. They have an operating current of 10A with a hold current of 5A and a clamping voltage of 240V. These fuses have a react time of about 45ms and a reset time of about 800ms. Unlike traditional fuses, the VTP190F does not require replacement after it has been triggered.

The primary application of the VTP190F is in industrial equipment such as air conditioners, refrigerators, and pumps. It can also be used in the safety circuits of medical equipment, UPS systems, and other power supplies. The VTP190F has a low resistance value and low react time which makes it ideal for applications where fast detection and response are critical.

The VTP190F\'s working principle is based on a polymeric positive temperature coefficient (PPTC). When the current passing through the device exceeds the preset threshold, the PPTC will start to increase its resistance. This creates an abrupt increase in voltage that will cause the current to drop off and reset the fuse. After the fuse has reset, it will return to its normal working conditions.

The VTP190F is also designed to be tamper-proof since it will not reset if the current or the voltage is consistently too high. This ensures that the fuse will not be accidentally reset by a miswire situation. This makes it an excellent choice for applications that require reliable protection.

The VTP190F is used in many industries where over-current protection is essential. This includes medical and automotive industries, industrial control applications, and telecommunications. The VTP190F is also used in products such as washing machines, high-power motors, and electric vehicles. Its fast reaction time and high current carrying capacity make it an ideal solution for many applications.

In summary, the VTP190F is a polymeric PTC resettable fuse that provides reliable over-current protection for industrial and consumer applications. It has a preset voltage range of 185V to 190V at 20°C, and its operating current is 10A with a hold current of 5A and a clamping voltage of 240V. Its fast react time of 45ms and reset time of 800ms make it a great choice for applications where fast response is necessary. The VTP190F is widely used in many industries such as the automotive, medical, and industrial control industries.