B59155-M140-A70
EPCOS
The EPCOS B59155-M140-A70 is a PTC thermistor designed for thermal protection of winding in electric motors. It operates at up to 30V and has a trip temperature of 140°C.
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The EPCOS B59155-M120-A70 is a PTC thermistor specifically designed for the thermal protection of winding in electric motors. It features a thermistor pellet with insulating encapsulation and silver-plated, Teflon-insulated AWG 26 litz wires. The trip temperature is coded in the litz wire color, with this specific model having a nominal threshold temperature of 120°C.
Key electrical characteristics include a maximum operating voltage of 30V at 0-40°C and a maximum measuring voltage of 7.5V. The rated resistance at 2.5V is 100W, with an insulation test voltage of 2.5kV ac. The response time is less than 5 seconds. The operating temperature range is -25°C to +180°C when V=0, and 0°C to 40°C when V=Vmax.
This component conforms to DIN 44 081 characteristics for nominal threshold temperatures between 90 and 160°C. It can be used in conjunction with Siemens tripping units. The litz wires are silver-plated and Teflon-insulated, providing durability and reliable connections. The product is supplied in bulk packaging.
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Estimated market price range - modelled values for guidance only, not live distributor offers.
The maximum operating voltage is 30V.
The nominal trip temperature is 120°C.
The operating temperature range is -25°C to +180°C when V=0, and 0°C to 40°C when V=Vmax.