IULHK11111-5REC4-34792-4 Circuit Protection

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Circuit breakers are essential components in electrical systems used to protect electrical circuits from being overloaded. The IULHK11111-5REC4-34792-4 is a 3-phase circuit breaker model specifically designed for industrial applications. It is designed to protect motors, transformers, generators, and other industrial electrical equipment. It is a type of overload protection device that interrupts the electrical current if it exceeds a rated safe amount, thus protecting the circuit from being damaged.

The IULHK11111-5REC4-34792-4 circuit breaker has a maximum current rating of 4,000 A and a maximum short-circuit rating of 75,000 A. It has a standard operation voltage of 277/480V, a thermal overload setting range of 0.50 to 10 A, and a manual trip setting. The circuit breaker comes with a manual circuit-breaker operation handle that can be used for switching on and off the breaker. In addition, it features a trip lock that can be used to prevent the breaker from being switched on or off without authorization.

The working principle of the IULHK11111-5REC4-34792-4 circuit breaker involves the use of a Bimetallic strip. The Bimetallic strip acts as a heat-sensitive device that acts as the sensing element in the circuit breaker. The strip is made up of two pieces of metal strips. Each piece of metal has different thermal characteristics, such that one metal strip expands more than the other when exposed to heat.

When a fault current occurs, the fault current causes the Bimetallic strip to heat up, and as it heats up, the two pieces of metal expand at different rates. This creates a force against a contact within the circuit breaker that triggers the trip mechanism. The circuit breaker trips and disconnects the circuit, thus preventing an over current from damaging the circuit. The operating time of the circuit breaker is fast, as it trips within milliseconds of an over current situation.

The IULHK11111-5REC4-34792-4 circuit breaker is suitable for use in a variety of industrial applications. It is commonly used for motor protection, generator protection, transformer protection, overload protection, short-circuit protection, and reverse current protection. It is also suitable for use in commercial and residential applications as it is easy to mount and operate.

In conclusion, the IULHK11111-5REC4-34792-4 circuit breaker is an essential component in electrical systems used to protect electrical circuits from being overloaded. It is designed to protect motors, transformers, generators, and other industrial electrical equipment. It features a manual circuit-breaker operation handle and a trip lock, and it works by using a Bimetallic strip which acts as the sensing element in the circuit breaker. The circuit breaker is suitable for use in a variety of industrial applications, as well as for commercial and residential applications.

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