SST 7 Circuit Protection

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Fuses are some of the most common protective devices that are used in industrial and commercial electricity systems. They are designed to protect circuits from damage by cutting off the flow of current when a certain level of abnormal current is detected. Fuses provide an economical solution for protecting circuits in the event of short circuits and overloads. The SST 7 is a designation for a type of fuse designed to protect circuits from short circuit currents. This article will discuss the application field and working principle of the SST 7 fuse.

The SST 7 fuse is a non-rewirable wax-filled, fuse. It is a time-delay fuse that has a rating of 80A at 35VAC and comes in both panel and subpanel form. The fuse is typically used in lighting and heating circuits where it protects against both over current and over voltage conditions. The SST 7 is typically used in combination with other protective devices such as circuit breakers and has been designed to international standards, including BS EN 60065, IEC 60269, and UL rated types.

The working principle of the SST 7 fuse is based on the fact that it is designed to carry a certain level of normal current and to reduce the current flow when an abnormal level of current is detected. This is done through the use of a meltable strip that is heated when an abnormal current is detected. The strip expands and then gradually shrinks as it cools down. This process causes a reduction in current flow, which ultimately leads to the fuse blowing. In the case of an overcurrent or short circuit, the fuse will blow in a fraction of a second.

The SST 7 fuse is primarily used in industrial and commercial applications such as lighting, heating, and air-conditioning. It is also used for the protection of motor circuits and other circuits that are subjected to large loads. The SST 7 is also used in electronic equipment such as computers, fax machines, and medical equipment. In addition, it is used in residential applications for protecting against high current and voltage circuits.

The SST 7 fuse is designed for an easy installation and is UL-listed for use in both panel and subpanel mounting. The fuse is designed with two end terminals, one mounted in the panel and one connected to the circuit. The fuse can be either screwed on or snapped onto the circuit. The two ends are then connected to each other after mounting the fuse in the panel.

The SST 7 is a type of fuse designed for protection of circuits from short circuit currents. It is designed to reduce current flow when an abnormal current is detected, by melting a strip inside the fuse. It is typically used in industrial and commercial applications such as lighting, heating, and air-conditioning, as well as for the protection of motor circuits and other high current and voltage circuits. The SST 7 is also UL-listed for use in both panel and subpanel mounting.

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