RGEF900-2 Circuit Protection

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PTC Resettable Fuses

PTC resettable fuses are electronic devices that are commonly used in a wide variety of industries to prevent electrical overload and damage from occurring to sensitive electronics. A polymeric positive temperature coefficient (PPTC) device can be reset and reused many times when the current reaches an overload protection threshold. This type of fuse offers greater safety and longer lifecycle when compared to traditional fuses, and has the added benefit of being more cost-effective in the long run.

RGEF900-2 Application Field and Working Principle

The RGEF900-2 PTC resettable fuse is designed for automotive use, and is typically used to protect 12V, 24V and 36V DC applications such as radios, multimedia players, and aftermarket car alarms. This type of fuse is meant to be used as an overload protection device for systems where temperature and current exceed normal operation limits. It is designed to open at a temperature of about 150°C. The fuse contains a polymeric positive temperature coefficient (PPTC) device connected in series with a load. When the current flows through, the PPTC device will heat up and expand, interrupting the current flow and opening the fuse. Once the current is removed, the relay will reset itself, re-establishing the connection and allowing normal current flow.

The RGEF900-2 PTC resettable fuse is a great option for automotive applications that require an extra layer of protection. It provides superior overload protection for sensitive vehicle systems while also saving money in the long run. It’s compact design allows it to be easily integrated into existing systems, and its low cost makes it an attractive option for automotive installations.

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