AGRF700

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 specialized electronic components which protect against electrical over-currents without any user intervention or power interruption. This makes them invaluable in many applications, and the AGRF700 series of resettable fuses is one of the most widely used in the industry. This article looks at the AGRF700 application field and working principle.

AGRF700 resettable fuses offers over-current protection in many applications, including consumer electronics, telecom systems, and IT appliances. They can be used in combination with other over-current protection devices such as fuses and circuit breakers, providing high-performance protection for circuits. As their name implies, these resettable fuses reset themselves after an over-current event, meaning they don’t need to be replaced and can be used multiple times. This makes them both cost effective and easy to maintain.

The AGRF700 resettable fuse, when activated, will open an internal switch or relay that interrupts power to the device. When the over-current condition is resolved, the device will reset itself in a few seconds. This resetting process is different from a fuse, as fuses need to be replaced when they short-circuited. The resetting process of the AGRF700 also optimizes performance and reduces the risk of nuisance tripping, which can occur with other over-current protection devices.

The AGRF700 features resetting times that range from 6 to 300 ms, depending on the amount of current flowing through the device. This wide range of resetting times allows the AGRF700 to be versatile and designed to meet specific applications. To ensure these resetting times are achieved, the AGRF700 must be carefully designed. In turn, the AGRF700 is made up of several components, including a spring-biased reset switch, a cold-cutting core, and a conical separator.

The conical separator is vital for the AGRF700 to function, and it consists of an inner cone and an outer cylinder that are emplaced within the reset switch. The core of the AGRF700 is what isolates most of the energy of the over-current, and thus is what causes the fuse to trip. When current passes through the core, the temperature of the core rises. This temperature rise causes the inner cone to expand, and this pushes against the outer cylinder and causes the reset switch to open. As the inner cone cools, it retracts, pushing the reset switch to close again.

Another important aspect of proper functionality of the AGRF700 is the cold-cutting capability of the device. This ensures that the device is able to automatically reset itself even after an over-current event of extreme magnitude. With the cold-cut core, it is able to effectively cut off current by breaking the circuit. This prevents any further damage to the circuit, as well as any nuisance tripping.

In sum, AGRF700 is an incredible versatile resettable fuse that is capable of protecting against over-currents in many applications. Its efficient resetting mechanism and cold-cutting core make it a reliable and dependable over-current protection device. With a wide variety of resetting times, the AGRF700 can also be tailored to match many different applications. This makes it a great choice when it comes to over-current protection.

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