209-2-1-51-2-9-70

Series:	209
Part Status:	Active
Lead Free Status / RoHS Status:	--
Breaker Type:	Magnetic (Hydraulic Delay)
Moisture Sensitivity Level (MSL):	--
Current Rating:	70A
Voltage Rating - DC:	125V
Number of Poles:	2
Actuator Type:	Lever
Illumination:	--
Illumination Voltage (Nominal):	--
Mounting Type:	Panel Mount

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Introduction

Circuit breakers are an important element of electrical safety and efficiency. Commonly used in residential, commercial, and industrial applications, they are designed to protect the electrical circuit from potentially hazardous over-currents. Most circuit breakers feature a "trip-point", a certain level of current beyond which the breaker will open up the circuit. Many different circuit breaker configurations are commercially available to adequately suit the application of the user.

Types of Circuit Breakers

The type of breaker used in a given application should be carefully chosen to best suit the specific need. The most common types include air circuit breakers, magnetic breakers, and thermal breakers.

Air Circuit Breakers (ACBs)

Air circuit breakers (ACBs) operate by interlocking two moving parts with an air-gap, thus creating the trip-point the user desires. ACBs are widely considered to be the most reliable method of circuit breaker protection. They are highly reliable, as the air gap provided between the interlocking parts makes them virtually maintenance-free. Additionally, ACBs are fit for use in a wide range of voltage and power applications, and are commonly found in both industrial and commercial applications.

Magnetic Breakers

Magnetic breakers are similar to air circuit breakers except they utilize a magnetic force to trip the circuit. These breakers are increasingly popular due to their lower production cost compared to ACBs. They are commonly found in residential, commercial, and industrial applications alike. Magnetic breakers are reliable and efficient, and are designed to protect against overloads and short circuits.

Thermal Breakers

Thermal breakers, although similar to ACBs in service, operate a bit differently. Rather than an air gap, they incorporate an electronic or electromechanical component in the trip-point mechanism. This component is designed to sense current flow and, when the pre-determined level is reached, a signal is sent to the relay which then causes the breaker to open the circuit. Thermal breakers are best suited for applications where the current load is likely to vary, as they can react quickly and efficiently to sudden changes in current.

209-2-1-51-2-9-70 Application Field and Working Principle

The 209-2-1-51-2-9-70 model circuit breaker is designed for industrial applications where maximum safety and efficiency is desired. This circuit breaker is an air-circuit breaker (ACB), meaning that two interlocking parts create an air-gap when the trip-point is reached. The 209-2-1-51-2-9-70 circuit breaker uses a unique type-S trip-point mechanism, which allows for precise control and adjustment of the current threshold. When the current flow exceeds the trip-point, the 209-2-1-51-2-9-70 circuit breaker opens the circuit and thus prevents any further damage to the wiring. The type-S trip-point mechanism ensures reliable safety functions, while simultaneously providing a predictable and controllable trip-point for maximum efficiency in the circuit. The 209-2-1-51-2-9-70 model circuit breaker is designed for heavy duty industrial use and is capable of withstanding overloads and short-circuits. This circuit breaker is highly reliable and efficient, making it well suited for industrial applications.

Conclusion

Circuit breakers are an important element of electrical safety and efficiency. Different types are designed for different purposes, and the appropriate model should be chosen for the particular application. In industrial applications, the 209-2-1-51-2-9-70 air-circuit breaker is an excellent choice. Utilizing a unique type-S trip-point mechanism, the 209-2-1-51-2-9-70 circuit breaker is reliable, efficient, and capable of withstanding overloads and short circuits.

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