3BU50R

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3BU50R is an acronym for 3 pole-50 Amp Rated circuit breaker. It is widely used in residential, commercial, and industrial facilities as a powerful way of circuit protection. The 3BU50R offers circuit protection for a wide range of applications, from low-voltage residential loads to medium-voltage industrial loads. The breaker has 3 individual breakers connected in a series-parallel circuit, thus providing as much as 50,000/50 Amp of protection.

The application field of 3BU50R includes medium pulse circuits with swing frequency of below 60 Hz and a voltage of 250~480V. Also, it is used to protect appliances, tools, machines, and other electrical equipment from power surges, short circuits, and current overloads. Moreover, it is suitable for use in both single-phase and three-phase electrical circuits. The 3BU50R also acts as a circuit protection device when the circuit is disconnected.

The 3BU50R breaker is composed of three breakers that are connected in a series-parallel setup. This arrangement is in order to increase the maximum current rating of the device. In each parallel circuit, one breaker works as the main pole and the other two act as supplementary poles. This means that when the main breaker trip, the other two breakers act as a backup to limit the current in the circuit.

The working principle of the 3BU50R is the same as any other type of circuit breaker. When the current surpasses the maximum rating, the bimetal discs inside the breaker quickly expand due to the increased temperature, interfering with the contacts and disrupting the conduction of electricity. As a result, the supply is cut off, thus protecting the circuit from excessive current overloads.

The 3BU50R circuit breaker offers excellent protection against a variety of dangerous faults and overloads. It is a reliable and cost-effective means of protecting circuits and equipment from dangerous shocks, fire, and other hazardous electrical incidents. Its series-parallel arrangement enables it to provide maximum protection from power surges, short circuits, and current overloads. Thus, it is an essential device for any safe and efficient electrical system.

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