Electronic Thermal Overload Relay Symbol

Overload relay connection diagram.

Electronic thermal overload relay symbol.

Available in svg png jpg dxf dwg formats. Relay symbols and electromagnets. Though there are different types of overload relays the most common type is the bimetallic thermal overload relay. The thermal and magnetic overload detections are typically used together in a motor protection relay.

Although there are several types of overload relays available in the market however the most frequent type of relay is the. In a wiring diagram the symbol for overload contacts may look like two opposed question marks or an s. Most of the time a small voltage or current is used to switch other voltages or higher currents that may be electromechanical or fully electronic type. Citation needed electronic overload protection relays measure motor current and can estimate motor winding temperature using a thermal model of the motor armature system that can be set to provide more accurate motor protection.

The overload relay working function is discussed below. The relay are switching devices activated by signals. Overload trips symbols for use in electrical pneumatic and hydraulic schematic diagrams.