MF-RX018/250-2

PTC resettable fuses are an advanced form of circuit protection, which provide economic benefits over traditional one-time fuses. A thermally operated polymeric Positive Temperature Coefficient (PTC) component, which begins to rapidly increase in resistance as current increases beyond a pre-set level, is used. MF-RX018/250-2 is one kind of PTC resettable fuses.

Application field

The MF-RX018/250-2 PTC resettable fuse has a wide range of general purpose applications that require maximum protection, such as home appliances, consumer electronics, medical equipment, lighting components, automotive electronics, etc. It is suitable for the low-voltage system circuit of DC 24V-250V.

Working principle

Once the selected fuse current is exceeded, the PTC begins to excessively increase in resistance as the heat generated in its element increases. After the current returns to a safe level within its specified time (depending on the type of the fuse, up to 30 seconds), the fuse will automatically reset itself, thereby ensuring a reliable, safe and repeatable operation with a minimum interruption of the service. The MF-RX018/250-2 incorporates a positive temperature coefficient device, typical characteristics of which are a fast trip time, a low hot resistance, and current limiting in its I²t ratings.

The PTC Resettable Fuse MF-RX018/250-2 is designed to provide effective protection against extreme spikes of over-current and over-temperature. When an over-current event occurs, the MF-RX018/250-2 device will quickly open and provide an isolating disconnect, limiting the amount of damage to the equipment. And when it senses that the temperature of the circuit has exceeded its safe limit, it will isolate the power supply from the main circuit, thus preventing any further damage to the circuit from the excessive heat.

The MF-RX018/250-2 PTC Resettable Fuse provides a reliable and cost-effective way to protect the integrity of electronic systems. It has excellent characteristics such as wide operating temperature range, high inrush current capability, fast thermal response, internal reset capability, low leakage current, low contact resistance, and low temperature coefficient. In addition, this device is highly reliable and features a high-temperature rating for optimum performance.

Conclusion

The PTC resettable fuse MF-RX018/250-2 is a reliable and cost-effective way to protect electronic systems from over-current and over-temperature events. Its fast trip time, low resistance, and current-limiting characteristics make it an ideal choice for a wide range of general-purpose applications, such as home appliances, consumer electronics, medical equipment, lighting components, and automotive electronics. In addition, it features a wide operating temperature range, high inrush current capability, fast thermal response, internal reset capability, low leakage current, low contact resistance, and low temperature coefficient.