RUEF900-2 Circuit Protection

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PTC Resettable Fuses (Polymeric Positive Temperature Coefficient) are electrical circuit protection devices which possess the ability to be reset after responding to an over electrical/thermal current event. These types of fuses differ from ordinary fuses as they don’t require replacement after each incident and instead ensure safe operation by automatically disconnecting the electrical supply when a current fault occurs. The RUEF900-2 is a particular type of PTC Resettable Fuse which offers a number of advantages over traditional circuit protection devices.

The RUEF900-2 is a 900V 90A Resettable Fuse which can be used in a wide range of applications including semiconductor protection, automotive electronics, motor protection, power supplies, DC/DC converters, and high current circuits. It is designed with SMD (Surface Mount Device) technology for standard AR or SMT (Surface Mount Technology) applications, has a small size of 12.7 x 8mm with short lead times, and comes in a splice or RoHS (Restriction of Hazardous Substances) compliant package. The device is also UL recognized, CSA certified, and CE marked.

The main benefit of the RUEF900-2 is its ability to provide a fast response to over electrical/thermal current events while protecting against damages that could be caused by such events. It also eliminates the need for multiple devices and components used in multiple protection circuits as its design allows for protection in a single device.

The RUEF900-2 utilizes a positive temperature coefficient (PTC) thermistor as its sensing mechanism. When a sustained 80A over current event takes place, the thermistor is heated due to the extra current. This causes the resistance of the thermistor to increase rapidly, thereby blocking the current to ensure circuit protection and reset the device. The device is designed to block the current to levels of at least 5A and then reset to its normal operating state when the over-current event has been removed.

The device is also capable of automatically resetting multiple times if over current events occur, providing reliable protection and minimal interruptions for end-user operations. It offers a high level of accuracy and ensures repeatability of performance when resetting the fuse to its original state. The RUEF900-2 also has an operating temperature range of -40°C to 125°C, allowing it to be used in multiple applications and environmental conditions.

The RUEF900-2 PTC Resettable Fuses provide a cost-effective and efficient solution for circuit protection devices in a number of applications and environments. It eliminates the need for multiple components, provides fast response times to over-current events, and ensures the safety of end-user operations. The device is also UL recognized and CSA certified, making it a reliable, safe, and cost-effective choice for circuit protection in a variety of applications.

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