RXEF250-AP Circuit Protection

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PTC Resettable Fuses are miniature one-shot fuses designed to prevent damage to an electrical system in the event of an overcurrent or short circuit, as opposed to standard fuses which must be replaced after being triggered. The RXEF250-AP is one such device, designed to protect against prolonged current build-up or surges in automotive and industrial applications.

The RXEF250-AP features a low insertion loss and a high breaking capacity, as well as a wide operating range of 2.1 to 45Vdc. It is also equipped with a reset switch for easy recovery after a surge or overload, eliminating the need for manual reset. The device is RoHS Compliant, and meets ANSI/VDE/UE requirements.

RXEF250-AP works by automatically switching between two states upon detecting a current surge or overload. In normal operation, the device is in a low impedance state, allowing a continuous current of up to 7.5A to flow through. When the overcurrent exceeds 7.5A, the PTC fuse activates a high impedance state, cutting off the electrical supply and protecting the system from damage. The reset switch can then be used to reset the device and return it to its original low impedance state.

Unlike standard fuses, the RXEF250-AP is self-resetting, meaning it will return to its original low impedance state when the overcurrent or surge is removed rather than having to be replaced. This makes it particularly well-suited for applications with cyclical surges, such as motor-driven applications. The device also features a much faster response time than a standard fuse, making it ideal for high-end applications that require quick, reliable protection.

The RXEF250-AP is commonly used in automotive, marine, and industrial applications where a fast response and reliable protection are required. This includes automotive battery charging systems, as well as marine electrical systems, power supplies, and motor control circuits, among many others.

In summary, the RXEF250-AP is an ideal choice for applications that require reliable and fast protection against surges or overloads. It features a low insertion loss and a wafe operating range, as well as a reset switch for easy recovery after a surge or overload. With its robust design and fast response, the RXEF250-AP is a versatile PTC Resettable Fuse suitable for a variety of automotive, marine, and industrial applications.

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