Thermal Overload Relay Wiring Diagram. The globalspec specsearch database contains information about various therm al overload relay specifications, including type, electrical rating. Thermal overload relay is a protective device, and that is mainly designed to cut the power whenever the motor uses too much current for an extended the wiring diagram of an overload relay is shown below, and the connections of an overload relay symbol may seem like two opposite question marks. In this wiring diagram contactor, i shown thermal overload relay however soon i will make a diagram about electronic relay.
Dol starter control and power wiring by using a fuse, contactor, overload relay, motor.
Basically thermal overload relay is an overcurrent protection of the simplest type. The thermal overload relays rstm, rstn, rstl are suitable for protecting motors with phase control. Class 9065 catalog for overload relays and thermal unit selection. Use a thermal overload relay to thermally protect your motor in case of phase failure or overload. Anyways, the overload relay should be connected within delta circuit only and its setting range must refer the circuit diagram to understand the wiring and position of mounting etc. The globalspec specsearch database contains information about various therm al overload relay specifications, including type, electrical rating. Thermal overload relay is a protective device, and that is mainly designed to cut the power whenever the motor uses too much current for an extended the wiring diagram of an overload relay is shown below, and the connections of an overload relay symbol may seem like two opposite question marks. Motor current overload relay ( schneider electric) class gg fuses (example from littlefuse , the gv2af3 connection block.
