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Eaton DBU Series expulsion fuses are used in medium voltage power distribution applications to protect electrical equipment and power distribution systems from current overloading and short circuits.
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EElectrical fuses have a thin piece of wire which melts in case of fault to open the circuit and stop the flow.
Fuse is a metal piece that melts when there is an excess current due to overload, while a circuit breaker has an internal switch that gets tripped when there is excess current in the circuit.