Transcription of Overload Relays Catalog - Steven Engineering
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Overload Relays Catalog - Steven Engineering
Overload Relays and Thermal Unit Selection Class 9065 CONTENTSD escriptionPage General Information .. 2-10 Application Data .. 11-14 Approximate Dimensions and Weights .. 15-17 Thermal Unit Selection .. 18-42 1998 Square D All Rights Reserved 2 5/98 INTRODUCTION Overload Relays are intended to protect motors, controllers, and branch-circuit conductors against excessive heating due to prolonged motor overcurrents up to and including locked rotor currents. Protection of the motor and the other branch-circuit components from higher currents, due to short circuits or grounds, is a function of the branch-circuit fuses, circuit breakers, or motor short-circuit motors make up a large percentage of power system loads. Market demands for reduced downtime and increased productivity have compelled the motor control industry to evaluate motor protection technology continuously.
Overload Relays and Thermal Unit Selection Class 9065 CONTENTS Description Page General Information ...
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