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Circuit Breakers: T11-3-5.00A-02-31A application field and working principle

Circuit breakers are among the most essential devices in the electrical installations. They are designed to protect wiring and equipments from damage and malfunction that may result from short-circuit and overload conditions. Understanding the application field and working principle of a given circuit breaker type is essential to make sure that it is the right choice for its purpose.

Application Field

The T11-3-5.00A-02-31A conductors are single-pole molded case circuit breakers that provide interruption of electrical power for protection against overloads and short circuits. This type of circuit breaker is suited for residential, commercial, industrial and/or private use. It is designed for use with 120/240V AC single phase supply voltage, and supports operation in areas with an ambient temperature of 0°C to 50°C.

As an NEC-listed device, the T11-3-5.00A-02-31A meets established safety standards for residential, commercial and industrial applications. Its UL-477 listing confirms that it is suitable for communication and signaling systems, ensuring its compliance with the requirements of modern electrical installations.

Working Principle

The T11-3-5.00A-02-31A circuit breaker is a single-pole device that works by monitoring the current drawn by the connected device. When the current drawn by a device exceeds the rated value, the circuit breaker trips, cutting off the power supply to the device. This action prevents damage caused by overcurrents, such as burning of wires and components. Additionally, the T11-3-5.00A-02-31A features a manual trip lever to make it possible to trip the circuit breaker without turning off the power supply.

This type of circuit breaker also features a thermal-magnetic construction, which uses two types of tripping mechanisms: thermal and magnetic. When an overload occurs, the current drawn by the device causes heat to build up inside the breaker, tripping the circuit in the thermal tripping mechanism. When the current drawn by the device exceeds the rated value for longer periods of time, the magnetic force of the coils in the circuit breaker causes the main contacts to separate, tripping the circuit in the magnetic tripping mechanism.

As a further protection, the T11-3-5.00A-02-31A also has a thermal-magnetic overload relay that works by detecting current deviation. When an overload occurs, this relay detects the current deviation and triggers the tripping mechanism. This ensures that the circuit breaker trips when an overload is detected, thus avoiding destruction of the connected device.

Additionally, the T11-3-5.00A-02-31A also features a knob to manually reset it after tripping. When the device has been reset, the circuit breaker is ready to detect any further overload or short-circuit, providing protection for the connected device.

Conclusion

The T11-3-5.00A-02-31A circuit breaker is a versatile device suitable for protecting 120/240V AC single-phase circuits and communication and signaling systems. Its application field runs from residential to industrial and private uses, meeting the safety standards of The National Electrical Code (NEC). Moreover, its thermal-magnetic construction helps it to provide reliable circuit protection, while its thermal-magnetic overload relay improves its accuracy. When properly installed and used, the T11-3-5.00A-02-31A can help to provide safe operation in any electrical circuit.

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