TS-709-3

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Circuit Breakers – TS-709-3 Application Field and Working Principle

The TS-709-3 circuit breaker is a type of thermal-magnetic molded case breaker (MCCB) that is designed for protection of electrical circuits in commercial and industrial applications. It is a single pole device, which means that it is designed to protect one circuit at a time. However, this efficient circuit breaker may also be used in three-phase and four-pole systems. This versatile breaker is suitable for protecting circuits from overloading, short-circuiting, and circuit interruption. The TS-709-3 offers both low energy let-through and high interrupting capacity, making it an excellent choice for applications where space is limited.

The TS-709-3 is a thermal-magnetic circuit breaker, which means it uses a combination of both thermal and magnetic elements to measure the current running through the circuit. The thermal element senses the heat generated by the current running through the circuit, while the magnetic element senses the magnetic field created by the current. Both of these elements work together to detect any current overloads or short circuits and quickly trip the breaker to shut off power before damage to the circuit occurs.

The TS-709-3 is considered a “one-shot” circuit breaker, which means that it will trip and reset just once after the initial overload or short circuit. This single-pole, thermal-magnetic breaker also has a trip current rating of up to 75 A, which is well-suited for residential service panels, as well as other low-voltage applications.

When the TS-709-3 circuit breaker is connected to a power source, it goes through an initial self-test to check its operating condition. This test is done by the thermal element, which assesses the amount of heat generated by the current flowing through the circuit. If the thermal element detects that the current is too high – indicating an overload or a short circuit – it sends a signal to the magnetic element, which in turn trips the breaker, shutting off power to the circuit.

The TS-709-3 has a reset switch that allows the user to manually reset the breaker. If the breaker was tripped due to an overload, the reset switch will allow the circuit to be turned back on after the problem has been resolved. However, if the breaker was tripped due to a short circuit, the reset switch will not work and the short circuit must be identified and solved before the circuit can be reset.

The TS-709-3 is an excellent choice when it comes to protection of electrical circuits in commercial and industrial applications. Its low energy let-through plus its high interrupting capacity make it a reliable piece of equipment when space is limited. With its thermal-magnetic design, the TS-709-3 is able to detect overloads and short circuits quickly and efficiently, thus providing reliable protection for the circuit. Its reset switch also makes it easy for users to manually reset the breaker when necessary.

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