T11-1-7.50A-01-20A-V

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Circuit breakers are fundamental components of almost any medium to high power electrical system. They protect against electrical shocks and dangerous overloading conditions, preventing any damage to the system components or potential injury to personnel. A specific example of these power devices is the T11-1-7.50A-01-20A-V circuit breaker, which is a single pole, thermally-magnetic, circuit breaker. It is sometimes referred to as a “2 in 1” circuit breaker due to its combination of both thermal and magnetic tripping mechanisms. This article will discuss the application field and working principle of the T11-1-7.50A-01-20A-V circuit breaker.

The primary application field of the T11-1-7.50A-01-20A-V circuit breaker is low voltage power systems in residential, commercial, and industrial environments. It is typically used in circuit boards, distribution boards, and switchboards as a means of protection against overcurrents and short circuits, as well as controlling and monitoring the power supply. The circuit breaker has a rated voltage of 400 VAC, and a rated current of 7.5 A. It is designed to trip when a current of 20 A is exceeded. It is also designed to automatically reset after the fault has been cleared.

The working principle of the T11-1-7.50A-01-20A-V circuit breaker is based on two distinct mechanisms. The first is a bimetallic strip, which is heated by the current flowing through it. If the current exceeds the rated current, the strip will bend and separate the electrical contacts, thus cutting off the current. The second mechanism is the magnetic effect of the current. If an overcurrent passes through the circuit breaker, it will activate an electromagnet, which will then cause the contacts to split, interrupting the power supply.

The T11-1-7.50A-01-20A-V circuit breaker has several advantages over traditional miniature circuit breakers. Firstly, it is able to handle higher currents without being tripped prematurely. Additionally, because its operation is based on both thermal and magnetic tripping, it is able to respond more rapidly to electrical faults. Finally, because it is a two-in-one circuit breaker, it is much more compact, saving both space and money.

In conclusion, the T11-1-7.50A-01-20A-V circuit breaker is a single pole, thermally-magnetic, circuit breaker, typically used in low voltage power systems in residential, commercial, and industrial environments. Its working principle is based on a bimetallic strip being heated by the current flowing through it and the magnetic effect of the current activating an electromagnet to cause the contacts to split. The use of a two-in-one circuit breaker allows for greater space and cost savings, and it is able to handle higher currents without being tripped prematurely.

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