0914251

Series:	TMC
Part Status:	Active
Lead Free Status / RoHS Status:	--
Breaker Type:	Thermal Magnetic
Current Rating:	1A
Voltage Rating - AC:	250V
Voltage Rating - DC:	65V
Number of Poles:	1
Actuator Type:	Lever
Illumination:	--
Illumination Voltage (Nominal):	--
Mounting Type:	DIN Rail

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Circuit Breakers

0914251 Application Field and Working Principle

Circuit breakers are used widely to provide a critical protection to electrical and electronic components, machines and systems. The mechanism of the circuit breaker is to detect a fault, such as too high current, and break the circuit to prevent damage to the system. In order to meet the safety and convenience requirements of large-scale electronic systems, it is necessary to select the most suitable circuit breaker according to the load installed in the equipment. The 0914251 circuit breaker combines the function of both an overload and short circuit protection, a current limiting function and an open circuit detection function and is suitable for use in various applications. The 0914251 has a current carrying capacity of 20 amperes, a rated insulation voltage of 250 volts and an impulse withstand voltage of 4000 volts. Additionally, it has a 4-pole design and a resolution up to 50 milliamps.To provide protection for electrical components, the 0914251 circuit breaker uses a combination of both passive and active elements. The passive elements, such as a bimetal strip and heating element, provide the initial current detect and the electrical arc detection. Initial current detection is based on the bimetal strip, which is a conductive material which expands and contracts in response to the temperature caused by high currents. The heating element is used to detect arcs and in combination with other components help ensure reliable interruption of faults.The active components, such as the operating magnet and contacts, provide the actual current interrupting and blocking, as well as the voltage sensing for open circuit monitoring. The operating magnet, activated by an electric current in the coil, attract a latch and also drives a plunger which moves the contact point from the open to the close position. Upon detection of a fault, the contacts are opened and the current flow to the load is broken. The contacts also detect the open circuit voltage, and if the voltage reaches a predetermined level, the contacts open and disconnect the load.In conclusion, the 0914251 circuit breaker is a compact, competitive and robust device that can provide efficient overload and short circuit protection and open circuit monitoring. It can be used in many applications and is suitable for both residential and commercial solutions.

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