UPL111-29675-1 Circuit Protection

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Circuit breakers are devices used to protect electrical circuits from overloads and short circuits. The UPL111-29675-1 circuit breaker is a type of circuit breaker designed for use in low voltage AC and DC wiring systems. It is a one pole, double throw (SPDT) switch, meaning it can open and close a single circuit in two directions.

The UPL111-29675-1 is a type of miniature circuit breaker (MCB) with a rating of 10A at 400VAC. It has a maximum current interrupting capacity of 10kA (10kiloamperes) and a cut-off current of 15A. The switch is rated for use in temperature ranges between -40°C and +75°C. Additionally, it has an IP20 ingress protection rating, meaning it is designed for limited protection of personnel from contact with live parts and is not suitable for applications that require it to be watertight.

The UPL111-29675-1 is designed to protect wiring systems against overloads, short circuits, and other potentially hazardous situations. The breaker is a magnetically activated switch operaing on the thermal-magnetic principle. This means that it will disconnect the circuit whenever an overcurrent or short circuit event occurs.

When an overcurrent event is detected, the magnetic element of the breaker is activated, causing the switch to open the circuit in a fraction of a second. When the circuit is opened, the energy stored in the magnetic field of the breaker is released, and this causes the temperature of the circuit breaker to rise. This rise in temperature causes the thermal element of the breaker to shut off the power to the circuit before the wiring is damaged or a fire is started.

When a short circuit event is detected, the magnetic element of the breaker is activated more quickly due to the high current and short duration of the event. This causes the breaker to open the circuit immediately, preventing damage to the wiring.

In both cases, the circuit can be reset by simply pressing the reset button located on the breaker. The reset button has a delay of several seconds, giving the breaker time to cool and reset before the circuit is reconnected.

The UPL111-29675-1 is a reliable and effective device for protecting low voltage AC and DC wiring systems in a variety of applications. Its small size and simple design make it a suitable choice for a wide variety of uses, including home applications, automotive systems, and commercial and industrial systems.

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