For overload and phase-failure protection of AC motors. VRS7 series thermal overload relay are suitable for overload and phase-failure protection of ACmotors with frequency of 50/60Hz,voltage up to 690v,current up to 0.1-85A under 8-hours duty or uninterrupted duty.Functions provided by these relays, are phase-failure protection, temperature compensation, ON/OFF indication ,Stop button,Test ...