209-3-1-66-4-8-10

Series:	209
Part Status:	Active
Lead Free Status / RoHS Status:	--
Breaker Type:	Magnetic (Hydraulic Delay)
Moisture Sensitivity Level (MSL):	--
Current Rating:	10A
Voltage Rating - AC:	240V
Number of Poles:	3
Actuator Type:	Lever
Illumination:	--
Illumination Voltage (Nominal):	--
Mounting Type:	DIN Rail

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Circuit Breakers: 209-3-1-66-4-8-10 application field and working principle

Circuit breakers are electrical safety devices designed to protect electrical circuits from damage caused by overload or short circuit conditions. They are the most common protection devices used on AC and DC power systems in homes, factories, and commercial buildings. The 209-3-1-66-4-8-10 is a type of circuit breaker specifically designed for commercial and industrial applications. It is a type of molded case circuit breaker (MCCB) that offers system protection with increased interrupting ratings and short-time current ratings. This article will discuss the 209-3-1-66-4-8-10 application field and its working principle.

Application Field

The 209-3-1-66-4-8-10 is an excellent choice for many commercial and industrial applications. It is widely used in motor control centers, panelboards, switchboards, generator excitation systems, relay protection systems, and other applications which require a high degree of system protection. It is also suitable for use as a main circuit breaker in AC and DC systems, as well as as a supplementary circuit breaker in AC systems.

Working Principle

The 209-3-1-66-4-8-10 circuit breaker utilizes a thermal magnetic trip unit to protect the system from high current and short-circuit conditions. The trip unit utilizes a bimetallic element and a magnetic blowout that respond to a preset trip level. The bimetallic element bends in response to a preset amount of heat generated by current flow and activates a release coil that trips the circuit breaker. The magnetic blowout responds to high current levels by releasing a plunger that trips the circuit breaker. The 209-3-1-66-4-8-10 also has a low-level signal monitoring feature that will detect any undervoltage and trip the circuit breaker if the voltage drops below 50 volts.

Advantages

The 209-3-1-66-4-8-10 has several advantages over other types of circuit breakers. It offers increased interrupting ratings and short-time current ratings, has a higher load-carrying capacity, and offers better protection from over current and short-circuit conditions. Additionally, the 209-3-1-66-4-8-10 is UL listed, making it suitable for use in hazardous locations. It also features a tough aluminum housing with a clear lexan window which allows you to monitor the current load without having to open the cover.

Disadvantages

Although the 209-3-1-66-4-8-10 is a reliable circuit breaker, it does have some disadvantages. It requires careful installation and periodic maintenance, and it can be expensive. Additionally, the current rating of the 209-3-1-66-4-8-10 is limited to 66 amperes, so it may not be suitable for larger installations where higher current ratings are needed.

Conclusion

The 209-3-1-66-4-8-10 is an excellent choice for many commercial and industrial applications. It is UL listed, offers increased interrupting ratings and short-time current ratings, and can be used as a main circuit breaker in AC and DC systems. Additionally, the 209-3-1-66-4-8-10 has a low-level signal monitoring feature that offers additional protection from over current and short circuit conditions. Although it can be expensive and requires careful installation and periodic maintenance, the 209-3-1-66-4-8-10 is still an excellent choice for many applications.

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