250R145-RBZR

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PTC Resettable Fuses are an important component of many electrical appliance systems. The 250R145-RBZR is a self regulating, resettable fuse designed to protect electrical appliances from over current. It is designed to provide continuous over current protection without interruption of power to the system that it is protecting.

The 250R145-RBZR is a resettable fuse that is based on polymeric positive temperature coefficient (PPTC) technology. This technology allows the fuse to sense increases in current and then respond to the increase by increasing resistance. As the current increases, the resistance increases accordingly, reducing current and protecting the system. When the current decreases to a safe level, the device automatically resets and the resistance returns to its original low level.

The PTC Resettable Fuses are designed with a mounting pad or lug for direct mounting on equipment, eliminating the need for extra hardware, labor and space. They are suitable for a wide range of applications, such as AC and DC circuits, printed circuit boards, and automated electrical equipment. The 250R145-RBZR has an operating temperature range of -40°C to +125°C, making it ideal for outdoor applications or in harsh environment applications. It has a very low leakage current, making it highly efficient in power consuming applications.

In addition, the device is engineered to incorporate a unique combination of temperature and current sensors that ensures highly accurate and reliable over current protection. It also offers an audible and visual trip indicator, and reset feature that enables the user to easily identify when the device has tripped due to an over current event. The device is available in multiple safety ratings and has a maximum voltage rating of 250V and a maximum current rating of 45A.

The 250R145-RBZR is an ideal solution for a wide range of applications where over current protection is required, such as HVAC, automotive, lighting, home automation, energy metering, industrial control and electronic consumer applications.

The working principle of the 250R145-RBZR PTC Resettable Fuse is simple. As the current flowing through the device increases beyond its rated value, the device reaches an aver temperature, increasing its resistance and reducing the current to a safe level. When the current returns to a safe level, the device automatically resets and returns to its low impedance state, allowing normal operation of the system.

The device also offers a visual trip indication system to alert users when an over current event occurs. The trip indicator is located on the top of the device and glows when the device has tripped, signalling that the system needs to be reset. The device also features a reset button on the top of the device, allowing users to easily reset the device and restore normal operation of the system.

In conclusion, the 250R145-RBZR PTC Resettable Fuse is an ideal solution for a wide range of applications where over current protection is required. It is based on polymeric positive temperature coefficient (PPTC) technology, which allows the device to sense increases in current and respond accordingly. The device also offers an audible and visual trip indicator, and reset feature. The device is highly efficient and reliable in power consuming applications, making it an ideal choice for a vast range of applications.

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