... under 8-hours duty oruninterrupted duty.Functions provided by these relays, are phase-failure protection, ON/OFF indication, temperaturecompensation ... GB 14048. International Standards: IEC 60947-4-1The relays can be mounted onto contactors or installed as single units ... place without any shock, vibration etc. Three-phase thermal relays with release class 10A. With differential phase-failure protection ...