Why use an auxiliary contact?
Use this auxiliary contact to indicate the position of the contacts in a circuit breaker. This device is used to monitor a circuit and ensure that a circuit breaker cannot be reset until the fault that caused the trip has been corrected. The auxiliary switch is mounted to the right of the protection element and operates at the same input power. The device consumes a minimum of 0.5 W of power, is highly efficient, and emits very little heat. Installation is simple and requires no tools, as it can be mounted directly on the DIN rail. These types of auxiliary contacts are found on circuit breakers in industrial and commercial applications.
Advantages of an auxiliary contact
The auxiliary contact can be mounted easily and quickly without any additional tools. In addition, it does not take up much space in the control panel due to its small size, but it can be vital in case of doubt. Since the auxiliary switch monitors the circuit and does not release the fuse until the fault and thus the fluctuations in the circuit have been eliminated, serious electrical accidents can be prevented. In addition to this very important feature, you always have everything in view that the auxiliary switch always indicates the position of the switch position, regardless of whether it has been triggered by a fault or manually.
Difference between main contact and auxiliary contact
To increase safety, we strongly recommend that you install an auxiliary contact. We have already informed you about the advantages in the sections above. But what exactly is the difference between the main contact and the auxiliary contact? The main contacts of the circuit breaker are designed for high voltages and currents, while the auxiliary contacts are only designed for low voltages and currents.