229-3-1-61-8-8-10-H Circuit Protection

Circuit breakers are an essential component of any electrical system. By providing an automatic shut-off of current when a circuit overloads, circuit breakers protect wiring from overheating or potentially dangerous situations. The particular model to be examined here is the 229-3-1-61-8-8-10-H. This article will look at both its application field and working principle.

Application Field

The 229-3-1-61-8-8-10-H finds its most common application in industrial-level electrical systems. Depending on the individual version, it is able to deal with both high and low voltage systems ranging from 240-600V and 2-60A. In terms of operating environment, this circuit breaker is ideal for dry areas with normal air temperatures ranging between -5°C and +55°C.

More specifically, this circuit breaker is suited to direct-start motor control applications, as well as being particularly adept at handling over-current trips. When dealing with short-circuit trips, the 229-3-1-61-8-8-10-H has its limitations, requiring a much faster trip time.

Working Principle

The 229-3-1-61-8-8-10-H works by sensing fluctuations in current flow and responding with a fast network-controlled trip that instantly disconnects the electrical circuit. It is equipped with a dual-pole thermal-magnetic trip unit that can simultaneously monitor both poles of the same circuit. The working principle is based on the link between heat and magnetic force in a metal coil. Heat dissipates quicker than the rate of current rise, and a release of magnetic force is triggered at a certain temperature. This is then picked up by the internal sensors, tripping the protector and shutting off the current.

This particular breaker is also characterized by an adjustable current setting. This has the advantage of allowing the model to be easily tailored for different electrical systems, plus a manual reset button which must be pressed before the system can be switched on again. By overriding the normal automatic settings, the same two-pole trip unit can also be used in AC, brushless DC, and soft-start motor control applications.

Conclusion

The 229-3-1-61-8-8-10-H is an effective circuit breaker ideally suited to industrial-level electrical systems, with a wide voltage and current range. It features an adjustable current setting and manual reset button, plus a dual-pole thermal-magnetic trip unit that can simultaneously monitor both poles. With its direct-start motor control capabilities and reliable overload protection, the 229-3-1-61-8-8-10-H proves to be an effective choice in the field of circuit breakers.