RGE300

PTC Resettable Fuses, also known as PTCs (Positive Temperature Coefficients), are often used in the electronic industry to protect against overcurrent conditions. They are generally used in applications where the normal current loads are not expected to exceed a certain defined level. The PTC Resettable Fuse is a thermal device, which contains a temperature sensitive polymer that expands when subjected to increased current levels. This limits the flow of current and causes the fuse to open. Once the thermal device resets itself, the fuse can be reconnected and normal operating current can flow again.

The RGE300 application field covers industrial, automotive, consumer electronic and office and multimedia appliances and other markets. It is designed to improve safety, reduce maintenance and increase operational efficiencies. The RGE300 is a high reliable, fast-acting resettable fuse with a wide range of breaking capacities. It offers an attractive price/performance ratio.

The working principle of the RGE300 is based on the bi-metallic principle, which combines two metals, each with different thermal expansion coefficients. It contains a Polymeric Positive Temperature Coefficient Device (PPTC), which acts as a heat sensitive switch. Under normal operating conditions, current passes through the PPTC, heating it up. However, when the current exceeds the rated current, the PPTC expands rapidly, creating a higher resistance to current flow, effectively blocking further current passage.

When the current drops below the breakdown current, the PPTC returns to its original shape, allowing the current to flow through again. The breakdown current can be adjusted to a required value by adding or removing a layer of material, during the assembly of the fuse. This adjustable feature ensures that the fuse can be used in various applications without having to replace the fuse.

The products are UL approved and meet international standards. The components are designed to reduce risks of fire and electric shock in applications including power distribution, lighting, electric motors, relays, contactors, switches, resistors, appliances, and many more. The RGE300 also has low profile component, making it easy to install in most applications. It offers an auto-reset function, which is used in circuits where the current load needs to be monitored on a continuous basis.

In conclusion, the RGE300 is a reliable, fast-acting resettable fuse, suitable for a wide range of industrial and consumer applications. It is able to quickly detect and extinguish current surges, protect sensitive devices, reduce maintenance costs, and offer improved safety models. It also offers low profiles for easy installation, and adjustable break away currents to suit specific needs.