3120-F321-P7T1-W12DY3-15A

Series:	3120-F
Part Status:	Active
Lead Free Status / RoHS Status:	--
Breaker Type:	Thermal
Moisture Sensitivity Level (MSL):	--
Current Rating:	15A
Voltage Rating - AC:	250V
Voltage Rating - DC:	50V
Number of Poles:	2
Actuator Type:	Rocker
Illumination:	--
Illumination Voltage (Nominal):	--
Mounting Type:	Panel Mount

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Circuit Breakers

A circuit breaker is an important safety and protection device used in electrical installations. It is designed to protect circuits from overcurrent, overvoltage and short circuit conditions that may arise from improper and/or hazardous wiring practices. The 3120-F321-P7T1-W12DY3-15A circuit breaker is no exception.

Applications

The 3120-F321-P7T1-W12DY3-15A circuit breaker is a single pole, manual reset, thermal magnetic circuit breaker suitable for a wide range of applications. These circuit breakers can be used in residential, commercial and industrial facilities and are rated for a maximum current of 10 Amps and a maximum voltage of 240V AC.This device is also suitable for use in equipment/furniture applications, HVAC systems, pumps and other motors, communications circuits, and kitchen/bathroom circuits. As such, it provides safe protection for these applications within its operating limits, protecting against damage from overloads and short circuits.

Working Principle

The 3120-F321-P7T1-W12DY3-15A circuit breaker utilizes a combination of thermal and magnetic protective principles to protect its rated current. The thermal protective principle works in the range of prolonged overcurrent conditions. During such an event, the surface temperature of the bimetallic strip element (the strip consists of different two materials with different coefficient of thermal expansion) increases above its setting temperature. This causes the bimetallic strip to bend, releasing the plunger to a trip condition. The magnetic protective principle is used to protect the circuit against instantaneous overcurrents. In this case, an electromagnet acts on a moving armature, pulling it to the trip position, allowing the internal moving contact to move to the open position, breaking the circuit and thus isolating it from the power source. Once the overload condition is corrected, the reset lever can be used to reset the circuit breaker, allowing the internal moving contact to move back to the close position and restore power to the circuit.

Conclusion

The 3120-F321-P7T1-W12DY3-15A circuit breaker is a suitable device for many applications that require protection from both overloads and short circuits. It utilizes thermal and magnetic protection principles to provide maximum safety and protection from these conditions, while allowing manual resetting of the device once an overload has been corrected. This provides an excellent level of protection for circuits in residential, commercial, and industrial applications, offering reliable and lasting protection.

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