SMM 20 Circuit Protection

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The SMM 20 fuse is a small-scale miniature fuse with a breaking capacity of up to 20 amperes. This small package size makes it ideal for applications where space is an issue and the maximum current to be protected is above the ratings of a traditional fuse. It is available in both axial and radial leaded packages and can be used in both AC and DC applications. The main advantages of the SMM 20 are its small size, efficient trip characteristics and low wattage.

The SMM 20 fuse operates on the principle of resistance-temperature detection. In this method, the fuse has a temperature sensitive interface that isolates the metal tube element from the heat source. As the fuse heats up due to current, the temperature sensitive interface restricts the current, triggering the release of a movable contact. This results in the fuse’s disruption and the ensuing tripping.

The SMM 20 fuse is a low wattage device that is designed for use in applications that require protection from high amperage currents. It is a compact device that is equipped with a small circuit footprint and can easily fit in a variety of tight spaces. The SMM 20 is typically chosen for applications with an AC rating of 20 amps or less or a DC rating of 16 amps or less. It is also ideal for locations where space is an issue due to its small package size.

The SMM 20 is commonly used in a variety of electrical applications including computer and telecom environments, small consumer appliances, and automotive applications. The size and affordability of the SMM 20 make it particularly suited for low-voltage applications, such as mobile phone charger assemblies, solar photovoltaic systems, LED lights, and more. .

The main benefits of using the SMM 20 include its small size, fast trip characteristics, and low wattage. The SMM 20 is a cost-effective solution for applications requiring medium to high level protection with a small footprint. Additionally, the SMM 20 is designed to meet several international safety standards, making it suitable for use in a variety of environments.

The SMM 20 also offers a number of features, including a current limiting feature which helps reduce the risk of over-current or short circuit situations. It also features high immunity to voltage transients, helping to protect other components in the system. Additionally, the SMM 20 comes with a built-in thermally-initiated shut-off system, helping to prevent damage caused by overheating.

In summary, the SMM 20 is an efficient and compact device that is capable of providing up to 20 amperes of protection for AC or DC applications. It is designed specifically for low-voltage applications and features a robust design that is equipped with a number of safety features. Its small size and affordability make it an ideal choice for a variety of applications requiring medium to high level protection, such as consumer appliances, telecom, automotive, and solar photovoltaic systems.

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