In power distribution equipment, auxiliary contacts, commonly referred to as "a", "b", and "c" contacts, are used in control circuits to monitor and signal the status of the main power contacts of a device like a circuit breaker or contactor. The distribution blocks and device terminal blocks from the FIX block system are available ready to connect in different cross-sections, mounting types, and colors. The FIX blocks can be used straight away and extended as needed. It is a vital part and central hub of any electrical system. They are essential for implementing electrical. All components of the electrical items of Works of the auxiliary systems of electrical and mechanical installation should be of reliable design. Short circuit calculations, de-rating factors, etc.
[PDF Version]