R21-0F..S00401188

Circuit breakers are devices that protect electrical circuits and equipment from dangerous, damaging over-currents. They are designed to disconnect the circuit from the mains power in a fraction of a second, and remain in the open circuit state. This action prevents shocks, fires, and other hazardous events caused by an overload. The R21-OF..S00401188 is a popular circuit breaker in the market, and is a good example of how circuit breakers work.

The R21-OF..S00401188 is a single-phase,Miniature Circuit Breaker (MCB) with a rated voltage of 230-400 V. It has a maximum current rating of 40 A and can be used in both individual and combination circuit breaker applications. Its contact form is single-pole and the design utilizes a integral thermal magnetic trip unit that is adjustable and can be inspected easily. The R21-OF..S00401188 works by sensing an overload when the current exceeds the marker rating and trips, cutting the mains power from the circuit.

The R21-OF..S00401188\'s application field is mainly in residential, commercial and industrial applications. It is highly popular due to its small size and fast response. On the other hand, it can also be used as a back-up protective device for machines with high initial starting currents. As an adjustable device, it allows for well-regulated power supply, protecting the connected appliances from every possibility of damaging over-currents.

The R21-OF..S00401188 uses the working principles of magnetic and thermal protection. Mainly, it relies on a bimetallic strip, which is heated by the current flow and expands. When the current exceeds a predetermined level the strip triggers the internal latch circuit, initially opening one contact and partially tripping the circuit breaker. Then, in order to completely trip the breaker, a magnetic field is used. The magnetic field reacts to the increasing current and completes the trip of the breaker.

In conclusion, the R21-OF..S00401188 is a reliable and popular circuit breaker. It is often used in residential, commercial or industrial applications and its small size makes it a great choice as a back-up protective device as well. It is based on the combination of magnetic and thermal protection forces and its integral thermal magnetic trip unit is adjustable and easy to inspect. Therefore, it is a great choice for anyone looking to protect their circuit from dangerous, damaging over-currents.