Thermal Cutout/Regulator/Limiter

FEATURES– Precision switching – High sensitivity – Broad application – Wide range of housings, connections and fixings – Designed for dirty situations

A3A3A A3K A3K2 A3K3

DESCRIPTIONTypes A3, A3D, A3L, A3DL, A3DS, A3A, A3DA, A3SD, A3AS, A3K,and A3K1 are designed for operations as thermal cutouts, tempera- ture regulators or overheat protection.Type A3K2 is a double pole thermal cutout or over-temperature protector.Type A3K3 is a thermal cutout or temperature regulator with a fuse. Types A3B, A3LB, A3AB, AKB and A3KB are thermal limiters (withmanual reset).The thermal response system operates by means of a bimetal snap-disc acting on a switch contact without any electrical connection.The system is insensitive to current, and reacts to external thermalinfluences.Plastic housing, base-plate and mounting lug are all voltage-free. Heat transfer is effected directly through the plastic/metal housing orsolid media, and indirectly by convection, radiation and conduction in the case of gaseous media.APPLICATIONSTemperature monitoring and control,Temperature limiting and indication in electrical appliances, industrial plant, machinery and equipment, process engineering.e.g.cookerscoffee machineshotplatesheatersegg cookers vacuum cleanersradiatorsdomestic appliances ironing machineswater heaterselectrical equipment electric blanketsweldersoil heaters foot warmersthyristorsplate warmer