LR2-D Thermal Overload Relay LR2-D Thermal Overload RelayApplicationThis series of thermal overload relay can be used in the circuit of 50Hz or 60Hz, ... TSC1-D series AC contactor. It is the most advanced thermal relay in the nineties in the world. The products comply with ... frequency 50-60Hz.(d). Use group, rated working voltage, appoint thermal current and rated current. LR2-D33 Thermal Relay