C-2000™ RT overload relays provide motor overload protection through fixed bi-metal heaters. These relays are ambient compensated and utilize a differential mechanism for 1-phase sensitivity. The trip setting is adjustable for the range listed. overload relays may be set for 4 different operational modes manual reset only, automatic reset only, manual reset/stop or automatic reset/stop. stop is initiated by pushing the reset button which interrupts the holding circuit in the latter two listed modes. overload relays feature visible trip indication, reset on the upstroke, weld check and trip test. C-2000™ contactors and starters have been tested and certified to meet IEC 947.4 type 2 coordination when protected with the type fuses. type 2 coordination requires that, under short circuit conditions, the contactor or starter shall cause no danger to persons or installation and shall be suitable for further use. The risk of contact welding is recognized, in which case the manufacturer shall indicate the measures to be taken as regards the maintenance of the equipment (IEC 947.4).