Electric Motor Thermal Protector (Kain-278)

Basic Info.Model NO.KI-67Breaking CapacityHigh Voltage Circuit BreakersOperationElectric TypeSpeedHigh-Speed Circuit BreakerArc-extinguishing MediumAirInstallationFixedStructureConventional Circuit BreakerMax Current5AMax Voltage24vdc/250vacTemperature Range50-150 CentigradeTemperature Tolerance± 5 /± 3/± 10 CentigradeReset Temperature2/3 Operating TemperatureLife Span10000 CyclesAction TypeNormal Open & Normal CloseMaterialMetal & BakeliteWire Type3622 Amg22#TypeCircuit BreakerTrademarkKainSpecificationCustomizedOriginGuangdong, ChinaProduct Description KI67 universal and enhanced serial thermal protectors are widely used in industry, electrical household appliance and electric equipment to avoid abnormal operation caused by overcurrent and overtemperature. The products provide effective, reliable and safe protection. The enhanced casing is suitable for internal installation of plastic hermetic motor, which can bear the plastic molding pressure at 3.5Mpa. The performance of the products satisfies the standards including IEC34-11, GB13232, GB/T13002, etc. Structure and protection principle KI66 type thermo protector is composed of the parts of thermal conductive casing, bimetallic parts welded with silver alloy contact point, conductive bracket, insulation fixation stand, fixed contact strip and heat resistance cable. When current passes through the bimetallic parts with resistance and in case of abnormal operation, along with the increase of current or the environment temperature rises to the set value, the bimetallic parts perform quick action, opens the contact point, and disconnects the circuit. When the device is cooled to the temperature for safe operation, the contact point will automatically closes and recover normal operation. Structure figure Note 1. Because the casing is made of conductive metal, thermal conductive and heat resistance insulation sleeves are required for use. 2. Refer to A-C graph for selecting protection temperature. Rated action temperature table Type Open Temperature Range Type Open Temperature Range 50'C 50± 5.0'C 100'C 100± 5.0'C 55'C 55± 5.0'C 105'C 105± 5.0'C 60'C 60± 5.0'C 110'C 110± 5.0'C 65'C 65± 5.0'C 115'C 115± 5.0'C 70'C 70± 5.0'C120'C 120± 5.0'C 75'C 75± 5.0'C 125'C 125± 5.0'C 80'C 80± 5.0'C 130'C 130± 5.0'C 85'C 85± 5.0'C135'C 135± 5.0'C 90'C 90± 5.0'C 140'C 140± 5.0'C 95'C 95± 5.0'C 145'C 145± 5.0'C 150'C 150± 5.0'C Note: The recovery temperature is 2/3 of the standard action temperature with the tolerance of ± 15'C or specified by customer Contact point maximum capacity TH serial protectors can perform 5000 times of connection and disconnection protection under the following conditions. Voltage 24V-DC 125V-AC 250V-AC Current 12A 12A 8A Installation and overall dimensions Cable The cables are AWG20#, 22# silicone cable and electronic irradiated cable. Customized service is available. A-C graph Critical current & ambient temperature graph (It is to consider current effect while selecting the protection temperature) Type OpenTemperature Range Type OpenTemperature Range 50C 50± 5.0C 100C 100± 5.0C 55C 55± 5.0C 105C 105± 5.0C 60C 60± 5.0C 110C 110± 5.0C 65C 65± 5.0C 115C 115± 5.0C 70C 70± 5.0C 120C 120± 5.0C 75C 75± 5.0C 125C 125± 5.0C 80C 80± 5.0C 130C 130± 5.0C 85C 85± 5.0C 135C 135± 5.0C 90C 90± 5.0C 140C 140± 5.0C 95C 95± 5.0C 145C 145± 5.0C     150C 150± 5.0C