CR11-51F-20.0A-R01IV-V

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CR11-51F-20.0A-R01IV-V Application Field and Working Principle

Circuit breaker devices are essential in any electrical system. They are designed to protect other components against the damaging effects of excessive current, short circuits, and overloads. The CR11-51F-20.0A-R01IV-V is a type of circuit breaker device, known as an inverse-time circuit breaker, that offers numerous electrical protection applications.

Design and Operation

The CR11-51F-20.0A-R01IV-V is a pre-set inverse-time circuit breaker, typically rated at 20A. It is designed with an adjustable trip setting of between 30mA and 3A. The device features a unique trip indication system with a reset switch on the front panel to enable easy identification and reset of any trip event. The device is designed for quick control of circuit breakers for branch-circuit protection and overload protection of conductors in a variety of domestic and light commercial applications.

The device consists of two main components: a trip unit, which is activated if the breaker is overloaded or a short circuit event occurs; and a main circuit breaker, which is mechanically activated when a trip is initiated. The two components are enclosed in a molded plastic case, which is designed with a series of spacers and terminal pathways specifically engineered to provide maximum safety and efficacy.

Applications

The CR11-51F-20.0A-R01IV-V is designed for a variety of electrical applications. It is particularly suitable for applications where there is no need for a manual interruption of power or where the power must be interrupted quickly to prevent damage due to an overload or a short circuit. The device can be used to control branch-level circuit breakers and to protect power supplies in a variety of domestic and light commercial applications, such as kitchen and laundry equipment, electrical motors, and small HVAC systems.

Working Principle

The working principle of the CR11-51F-20.0A-R01IV-V is simple: the main circuit breaker is automatically triggered if the device senses an overload or a short circuit event. When the main circuit breaker trips, it interrupts the power flow, thus preventing damage due to excess current. The trip unit then triggers a delayed response, allowing the user to manually respond if the issue is not a short circuit. This delayed response ensures that the breaker does not interfere with the normal operation of the equipment.

Conclusion

The CR11-51F-20.0A-R01IV-V is an inverse-time circuit breaker specifically designed for a variety of electrical protection applications. It features an adjustable trip setting and a unique trip indication system to enable easy identification and reset of trip events. The device is suitable for use in a range of domestic and light commercial applications, and its working principle ensures the protection of other components against the damaging effects of excessive current, short circuits, and overloads.

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