B59875A0120A010

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PTC resettable fuses are important components designed to provide over-current protection for electronic equipment. They are also known as polyfuses, polyfuse resettable fuses and polymeric positive temperature coefficient (PPTC) fuses. The main reason for the popularity of such fuses is that they are easy to install, reliable and more cost-effective than regular fuses. The B59875A0120A010 PTC resettable fuse is one such device that provides reliable protection in various applications.

The B59875A0120A010 has a rated current of 20A and an operating voltage of 330VAC. It is equipped with an internal VDR (voltage-dependent resistor) that monitors the system voltage and trips when the voltage reaches a predetermined level. The internal VDR also helps to protect the system from inrush currents. The device also features a fast-acting trip time of 50ms, making it an ideal choice for applications that require a quick response to inrush currents. The fuse is designed to be reset manually, making it suitable for use in applications where the user has the ability to reset the fuse manually. Additionally, the B59875A0120A010 features an internal thermistor that helps protect the system from thermal overloads.

The B59875A0120A010 is widely used in a variety of applications such as electronic test and medical equipment, household appliances, switch mode power supplies, and industrial equipment. Its fast-acting trip time helps protect the system from inrush currents, while its internal thermistor provides protection from thermal overloads. As the device is manually resettable, it is suitable for use in applications where regular monitoring and periodic resetting of the system is required. Additionally, the device is designed to provide reliable protection and is more cost-effective than regular fuses.

The working principle of the B59875A0120A010 is based on the PTC (positive temperature coefficient) element used in the device. This element utilizes a special material, such as polyethylene or polypropylene, with a temperature coefficient that increases as the temperature of the element rises. This helps to detect malfunctions, as the element will begin to slowly increase its warm temperature when an over-current occurs. This increase in temperature causes the internal thermistor to trip, thereby disconnecting the power to the circuit.

In addition to the PTC element, the B59875A0120A010 also features a voltage-dependent resistor (VDR) which is used to detect inrush currents and prevents them from causing damage to the system. The VDR is a small resistor that is connected in parallel with the PTC element, and its resistance increases as the system voltage increases. When the system voltage reaches a predetermined level, the VDR trips, resetting the PTC element and disconnecting the power to the circuit.

Overall, the B59875A0120A010 is a reliable and cost-effective PTC resettable fuse that can be used in various types of applications. It is designed to protect the system from both inrush currents and thermal overloads, providing dependable protection at a reasonable cost. The device is easy to install and requires minimal maintenance, making it an ideal choice for those who need reliable protection for their electronic equipment.

The specific data is subject to PDF, and the above content is for reference