What is a magnetic starter?

Magnetic starter is an electric switching device commonly used as an initiation mechanism for electric motors and other high -frequency equipment. The magnetic starter, also known as the contactor, relies on the electromagnetic field to close the contacts of contacts, which then transmit energy to the engine. This electromagnetic field is delivered by a two -piece laminated steel core and a wire coil connected to the control circuit. When the Start button is pressed and the coil is filled, it creates a magnetic field that closes the closed contact mechanism and triggers the engine. Magnetic appetizers can have the main contact points from two to four sets of main contact points and will often contain built -in sets of auxiliary contacts and cut -outs of thermal overload overload.

Most of the installations of electric motor and heavy devices use a magnetic starter to start operation. Magnetic appetizers often called contactors or relays allow remote starting of the device and, depending on a particular design, also offerand overload and auxiliary switching. The main contact points in the magnetic starter act as switches to create or break the main motor supply circuit. In the case of smaller single -phase engines, only two contact points will be required - each for live and neutral lines. Three -phase engines will naturally require three contacts, one for each phase.

These appetizers consist of two laminated steel cores and two sets of contact points, which serve as a switch to control the electric power supply. One steel core and one set of contacts are connected to the magnetic starter body and do not move. The second core and contacts can move and are connected together under the spring voltage to separate from static units. Around the static nucleus there is a wire coil that creates an electromagnetic field that attracts the movable core of the anti -statický. Moving contacts travel with a movable core and press firmly against static contact points to complete the engine power circuit.

The

circuit that adds the current to the coil is known as the control circuit and passes the stops and start buttons, allowing the engine remote control. Usually there are at least one or two sets of auxiliary contact points separate from the main contact sets included in magnetic appetizers. They are used as blocking, brackets and remote lamps that indicate the engine start state. Starters may also include thermal overloaded devices that cut the power supply to the coil and stop the engine if it overloads.