PTC Resettable Fuses: This Is What Professionals Do

Resettable surface fuses are a type of circuit protection device that is reusable and is used in a variety of applications. These resettable fuses trip when the current exceeds a specific limit but will operate normally when the conditions return to an average level. PTC Resettable Fuses function by increasing their resistance as the temperature increases due to an increase in current. The current trip range is from 14 mA to 50 A, along with the time to trip ranging from 8 ms to 90 s.

Types of Resettable Fuses

Various resettable fuses mainly depend on the type of application required. The most preferred types of resettable fuses include:

SMD Resettable Fuses

SMD resettable fuses create part of the circuit on a PCB, enabling the electric current to flow through them. When a fault occurs in a circuit, such as an overcurrent, the fuses trip, forcing a break in the circuit, which restricts electricity from flowing in the circuit. This way, any damage to the circuit or the attached devices can be avoided. Unlike non-resettable surface mount fuses, they can be utilized as often as needed because they reconnect the circuit when conditions get back to normal.

Wire Ended

Wire-ended resettable fuses are appropriate for various electrical equipment, including security systems, auto motives, and telecommunications. They provide adequate protection of electrical and electronic circuits against excessive currents. These PTC Resettable Fuses do not need maintenance and can automatically reset themselves. You will also find options for wire-ended resettable fuses in PCB mount varieties.

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