MF-R1100-2-99

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PTC Resettable Fuses are an integral part of public and industrial safety circuits, as they help prevent hazardous events due to electrical overcurrent. The MF-R1100-2-99 is a resettable fuse offered by Hartmann which offers high quality protection and guarantees reliable operation. This article will explore the application fields and working principle of the MF-R1100-2-99 PTC Resettable Fuse.

Application Fields

The MF-R1100-2-99 is a cylindrical resettable fuse, it is commonly used to protect circuits from overcurrent in a variety of applications. It has been tested for ratings up to 100A as well as a voltage range of up to 48V. It is well-suited for circuit protection in medium to high current applications, such as automotive, medical, telecommunications and IT infrastructure. The maximum continuous working voltage of the MF-R1100-2-99 is 48V and it has a rated current of 25A. Additionally, the fuse has a current limitation of 95A which makes it ideal for high-current applications.

The MF-R1100-2-99 is designed to be easy to install and features a screw-type mounting design which enables easy installation and offers superior stability in comparison to other fuse types. This makes it perfect for industrial applications, as it is able to withstand fast and frequent temperature and current changes. The MF-R1100-2-99 is also designed to be corrosion-resistant and can be used in a range of industrial environments. Additionally, the fuse is RoHS 2.0 compliant, making it suitable for use in lead-free applications.

Working Principle

PTC Resettable Fuses operate using a PTC film, a highly sensitive material that increases its electrical resistance to high levels when exposed to excessive current. This limits the passage of current through the fuse and results in a controlled rise in temperature, which reduces the current and makes the fuse safe. The thermal memory of the PTC film ensures that the fuse automatically resets itself upon cooling, allowing the circuit to resume normal operation. In addition to providing high quality protection, the MF-R1100-2-99 also offers additional protection of the load in the form of voltage protection.

The resistance of the MF-R1100-2-99 is measured using an immersion bath of continuously flowing mineral oil which is maintained at a constant temperature of 50°C. This ensures that the resistance values of the fuse remain consistent over a wide range of temperatures and loads. Additionally, the fuse is designed to provide fast response and fast recovery times which ensures that the fuse will reliably protect the circuit from dangerous overcurrent or overvoltage events.

The MF-R1100-2-99 is a high quality PTC Resettable Fuse that offers superior performance in a variety of high-current applications. It features a screw-type mounting design for easy installation and offers excellent resistance to corrosion and temperature change. Additionally, it offers fast response times, fast recovery and reliable protection from overcurrent and overvoltage events. The fuse is RoHS 2.0 compliant, making it suitable for use in lead-free applications. The MF-R1100-2-99 is a reliable and efficient solution for protecting circuits from electrical hazards.

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