Thermal Relays

Thermal Relays are electrical components that typically consist of a thermal coil and one or more sets of contacts. Normally, a lower current is applied to the thermal coil, closing (turning off) a higher voltage/current circuit through the contacts. The main component of a Magnetic Starter is a relay, which is controlled by a set of momentary contacts in the form of a control station (Start/Stop). A contactor will often be fitted with auxiliary relay contacts as well. These auxiliary contacts, available in both, Normally Open (NO) and Normally Closed (NC) can also be used to control other equipment such as mixtures, lights, washing machines, etc.

• Vehicles
• Electrical appliances