LS Electric America | TOR | Knowledge Base

TOR
Single Phase Wiring for Overload Relay (TOR) & GMP
The TOR (Thermal Overload Relay) is designed for three-phase use, but it can also be used for single-phase applications. However, when wiring for single-phase, the connections must be made in series as shown below. For our EMPR (GMP) Relays ...
Differential vs Non-Differential Thermal Overload Relays
Explanation of Thermal Overload Relay Operation How a thermal overload relay operates; A thermal overload relay protects the motor from overcurrent by utilizing heat-generated resistance in the internal heater. When an overcurrent occurs, the heater ...

TOR