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Automation Starters Contactors, Starters, and Overload Relays Enclosures HVAC Enclosed Starters Manual Motor Starters Molded Case Circuit Breakers Motor Protection Relay Pilot Devices PLCs Soft Starts Variable Speed Drives HVAC Dealer Support/Submittals Compare Cerus Industry Links Terms & Conditions Credit Application   Call us Today! 1-800-962-3787 Tools and Calculators Motor Control Sizing Calculator Cerus Quick Motor Control Component Sizer.   COMPREHENSIVE VFD SAVINGS CALCULATOR (XLS) (Downloadable 2.5MB) Variable speed energy savings calculator for fan and pump applications. Contains wide range of fan and pump types, power graphs, and more.   VFD ENERGY SAVINGS CALCULATOR This calculator compares the benefits of using a variable frequency drive versus mechanical damping.  Enter your variables and calculate your annual ($) savings.   MOTOR AMPERAGE CALCULATOR This calculator is intended for use in sizing thermal overloads for squirrel cage type motors, running at speeds usual for belted motors and motors with normal torque characteristics.   MOTOR ENGINEERING FORMULAS DATA SHEET (PDF) A collection of useful motor engineering formulas for various applications.   FULL-LOAD CURRENT DATA SHEET (PDF) Tables for full load current three phase and single phase AC motors (based on NEC 430-150 and 430-148).