3120-F311-H7T1-W14XR1-15A

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Circuit Breakers: 3120-F311-H7T1-W14XR1-15A application field and working principle

Circuit breakers are an important part of any electrical system, providing protection against overloads, short circuits, and other dangerous faults. The 3120-F311-H7T1-W14XR1-15A circuit breaker is a double-pole breaker, meaning it can protect two circuits at once. This type of breaker is commonly used in residential and commercial applications and is UL 489 rated for 240 Volts AC at 50 Amps.

The 3120-F311-H7T1-W14XR1-15A has a trip time of 10 milliseconds and a hold current capability of 80 Amps. It also features an adjustable trip current, which is adjustable between 22-80 Amps, and a circuit lockout which prevents the breaker from being reset until the fault condition has been eliminated.

The 3120-F311-H7T1-W14XR1-15A is most commonly used to protect small commercial and industrial applications such as HVAC systems and large residential applications such as main service panels. It can also be used in combination with other circuit breakers to provide the highest level of protection to both the user and the circuit.

3120-F311-H7T1-W14XR1-15A Working Principle

The 3120-F311-H7T1-W14XR1-15A operates on the principle of thermal-magnetic releasing. This means that the breaker utilizes both thermal and magnetic forces to open the circuit in the event of a fault. In normal operation, the magnetic forces created by the current in the circuit keep the contacts in the breaker closed. However, when the current in the circuit exceeds the breaker’s rated trip current, the heat generated causes the contacts to open, thus interrupting the current and preventing further damage.

The thermal-magnetic principle of operation makes the 3120-F311-H7T1-W14XR1-15A extremely reliable, as there is no chance of failure due to mechanical wear or fatigue. It also ensures that the breaker will trip within its rated trip time, providing the highest level of protection to the user and the circuit.

Conclusion

The 3120-F311-H7T1-W14XR1-15A is a double-pole breaker that is UL 489 rated for 240 Volts AC at 50 Amps. It runs on the thermal-magnetic releasing principle, making it highly reliable and capable of tripping within its rated trip time. It is commonly used to protect residential and commercial applications and can also be combined with other breakers to provide the highest level of protection to the user and the circuit.

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