BRW-250

BRW-250 Application Field and Working Principle

The BRW-250 is a commonly used, type-H fuse used in medium voltage applications up to 22.5kV. It is most commonly used in industrial applications, although it is occasionally used in residential and commercial installations as well. The BRW-250 has a low voltage drop across the device, making it a great choice for applications where high energy consumption is a problem.

The BRW-250 has a voltage rating of 250VAC and is rated for use in a three-phase circuit. It is considererd a DC fuse as well, but its working performance in a DC circuit is highly dependent on the ambient temperature. When used in a DC circuit, it will need to be exposed to temperatures of up to 150°F to ensure proper protection.

The BRW-250 uses two basic principles when it is operational. The first is a thermal dropout principle, whereby the fuse will trip at a specific temperature. The temperature is pre-set and is dependent on the resistance of the fuse element. This principle is most useful when the fuse is used in a circuit with varying loads, because it ensures that the device can handle overloaded circuits.

The second principle is an arc-runaway principle. This means that when an arc occurs, the fuse will trip before the current reaches a potentially dangerous level. This protects the circuit against over-voltages, or from arcing due to load changes in the circuit. This principle also makes the BRW-250 a great choice for applications where kilowatts, volts, and amperes may be high.

The BRW-250 also features a double fuse element. This helps ensure that the fuse will trip in the event of a fuse burnout. The double element also reduces the risk of multiple fuses blowing due to overvoltage and overcurrent conditions.

In addition to the above features, the BRW-250 also has a low heat rating and a low arc-runaway time. This makes the BRW-250 a great choice for applications where load fluctuations are frequent. It also reduces the need for frequent testing and maintenance of the fuse, which result in cost savings for the user.

Overall, the BRW-250 is an excellent choice for medium voltage applications where performance and safety are paramount. Its double element design helps ensure that the fuse will trip in the event of an overload, while its low heat rating and arc-runaway time offer protection against high voltages and current changes. For this reason, the BRW-250 is a popular choice amongst those who use industrial and electrical installations.