EFS200 Circuit Protection

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EFS200 is an electrical specialty fuse manufactured by ZEVAC X fuse. It is designed and tested to UL standard for industrial and commercial applications. The fuse has a current rating of 200A, an interrupt rating of 200A at 600VAC/300VDC, and an operating temperature range from -50C to +100C. The physical size of the fuse is 2 inches wide, 2 inches tall, and 1/2 inch thick.

Fuses work by limiting the flow of current when too much current is applied. The current in the circuit until it reaches a level that the fuse can’t withstand, they will heat up and interrupt the current. In order to protect devices in the circuit, the fuse is designed to open and interrupt power in the circuit to protect. This capability reduces the potential for catastrophic damage due to excessive current.

EFS200 is uniquely designed in a two-step design process. The first step includes a heater element that heats up and expands once the currents exceeds the maximum rated current of the fuse. Once the maximum current limit is exceeded, the current flows through the relatively heated fuse element heating up further until it reaches its melting point and breaks. The second step consists of a short solid wire that is slightly weakened at the current point, the weak point will break and disconnect the loop at the fuse when the current load is too large.

The fuse is rated at 200A, and when the current load into the line exceeds this limit, the element will heat up until it reaches its melting point, and then disconnect the load. This fuse has an interrupt rating of 400A, meaning that in a short circuit, the current can be up to 400A interrupted in order to clear the circuit. The fuse will deform at the current point, while also expanding due to the heat generated.

EFS200 is designed with a special current short feature which enables the fuse to tolerate a short surge of additional current without blowing out, providing an additional layer of protection. This is done through the use of a ceramic insert material inside the fuse element that absorbs the additional current, so the fuse itself stays intact and allows the current to flow until it safely drops below the limit.

In summary, the EFS200 is a robust electrical specialty fuse manufactured by ZEVAC X fuse. The current rating on the fuse is 200A, with an interrupt rating of 400A at 600VAC/300VDC. The fuse is designed in a two-step process with a heater element and a short solid wire which weakens at the current point when overloaded. The fuse also has a special current short feature which allows it to tolerate a short surge of additional current without blowing out. This increases the safety and reliability of the fuse for industrial and commercial applications.

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