The overload thermal relay is suitable for overload protection of AC motor operated on 8 hours duty or uninterrupted duty. The overload protected AC motor with frequency 50HZ, voltage up to 660V,current up to 40A. Several functions provided by these relays are phase-failure protection, temperature compensation, ON/OFF indication and manual/automatic reset. The relays comply with IEC292-1 standard. Thermal Relay Series: LR1-D Thermal Relay, LR2-D Thermal Relay, LR9-F Thermal Relay, T Thermal Relay, TH-K Thermal Relay, TR Series Thermal Relay, TH Series Thermal Relay